* [PULL 01/29] tcg/ppc: Untabify tcg-target.c.inc
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 02/29] tcg/ppc: Enable direct branching tcg_out_goto_tb with TCG_REG_TB Richard Henderson
` (27 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 5c873b2161..5cecc6ed95 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -221,7 +221,7 @@ static inline bool in_range_b(tcg_target_long target)
}
static uint32_t reloc_pc24_val(const tcg_insn_unit *pc,
- const tcg_insn_unit *target)
+ const tcg_insn_unit *target)
{
ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
tcg_debug_assert(in_range_b(disp));
@@ -241,7 +241,7 @@ static bool reloc_pc24(tcg_insn_unit *src_rw, const tcg_insn_unit *target)
}
static uint16_t reloc_pc14_val(const tcg_insn_unit *pc,
- const tcg_insn_unit *target)
+ const tcg_insn_unit *target)
{
ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
tcg_debug_assert(disp == (int16_t) disp);
@@ -3645,7 +3645,7 @@ static void expand_vec_mul(TCGType type, unsigned vece, TCGv_vec v0,
tcgv_vec_arg(t1), tcgv_vec_arg(t2));
vec_gen_3(INDEX_op_ppc_pkum_vec, type, vece, tcgv_vec_arg(v0),
tcgv_vec_arg(v0), tcgv_vec_arg(t1));
- break;
+ break;
case MO_32:
tcg_debug_assert(!have_isa_2_07);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 02/29] tcg/ppc: Enable direct branching tcg_out_goto_tb with TCG_REG_TB
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
2023-10-18 22:25 ` [PULL 01/29] tcg/ppc: Untabify tcg-target.c.inc Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 03/29] tcg/ppc: Reinterpret tb-relative to TB+4 Richard Henderson
` (26 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Jordan Niethe
From: Jordan Niethe <jniethe5@gmail.com>
Direct branch patching was disabled when using TCG_REG_TB in commit
736a1588c1 ("tcg/ppc: Fix race in goto_tb implementation").
The issue with direct branch patching with TCG_REG_TB is the lack of
synchronization between the new TCG_REG_TB being established and the
direct branch being patched in.
If each translation block is responsible for establishing its own
TCG_REG_TB then there can be no synchronization issue.
Make each translation block begin by setting up its own TCG_REG_TB.
Use the preferred 'bcl 20,31,$+4' sequence.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
[rth: Split out tcg_out_tb_start, power9 addpcis]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 48 ++++++++++++++--------------------------
1 file changed, 17 insertions(+), 31 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 5cecc6ed95..9197cfd6c6 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2509,9 +2509,6 @@ static void tcg_target_qemu_prologue(TCGContext *s)
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
tcg_out32(s, MTSPR | RS(tcg_target_call_iarg_regs[1]) | CTR);
- if (USE_REG_TB) {
- tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_TB, tcg_target_call_iarg_regs[1]);
- }
tcg_out32(s, BCCTR | BO_ALWAYS);
/* Epilogue */
@@ -2529,7 +2526,13 @@ static void tcg_target_qemu_prologue(TCGContext *s)
static void tcg_out_tb_start(TCGContext *s)
{
- /* nothing to do */
+ /* Load TCG_REG_TB. */
+ if (USE_REG_TB) {
+ /* bcl 20,31,$+4 (preferred form for getting nia) */
+ tcg_out32(s, BC | BO_ALWAYS | BI(7, CR_SO) | 0x4 | LK);
+ tcg_out32(s, MFSPR | RT(TCG_REG_TB) | LR);
+ tcg_out32(s, ADDI | TAI(TCG_REG_TB, TCG_REG_TB, -4));
+ }
}
static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg)
@@ -2542,32 +2545,22 @@ static void tcg_out_goto_tb(TCGContext *s, int which)
{
uintptr_t ptr = get_jmp_target_addr(s, which);
+ /* Direct branch will be patched by tb_target_set_jmp_target. */
+ set_jmp_insn_offset(s, which);
+ tcg_out32(s, NOP);
+
+ /* When branch is out of range, fall through to indirect. */
if (USE_REG_TB) {
ptrdiff_t offset = tcg_tbrel_diff(s, (void *)ptr);
- tcg_out_mem_long(s, LD, LDX, TCG_REG_TB, TCG_REG_TB, offset);
-
- /* TODO: Use direct branches when possible. */
- set_jmp_insn_offset(s, which);
- tcg_out32(s, MTSPR | RS(TCG_REG_TB) | CTR);
-
- tcg_out32(s, BCCTR | BO_ALWAYS);
-
- /* For the unlinked case, need to reset TCG_REG_TB. */
- set_jmp_reset_offset(s, which);
- tcg_out_mem_long(s, ADDI, ADD, TCG_REG_TB, TCG_REG_TB,
- -tcg_current_code_size(s));
+ tcg_out_mem_long(s, LD, LDX, TCG_REG_TMP1, TCG_REG_TB, offset);
} else {
- /* Direct branch will be patched by tb_target_set_jmp_target. */
- set_jmp_insn_offset(s, which);
- tcg_out32(s, NOP);
-
- /* When branch is out of range, fall through to indirect. */
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, ptr - (int16_t)ptr);
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, (int16_t)ptr);
- tcg_out32(s, MTSPR | RS(TCG_REG_TMP1) | CTR);
- tcg_out32(s, BCCTR | BO_ALWAYS);
- set_jmp_reset_offset(s, which);
}
+
+ tcg_out32(s, MTSPR | RS(TCG_REG_TMP1) | CTR);
+ tcg_out32(s, BCCTR | BO_ALWAYS);
+ set_jmp_reset_offset(s, which);
}
void tb_target_set_jmp_target(const TranslationBlock *tb, int n,
@@ -2577,10 +2570,6 @@ void tb_target_set_jmp_target(const TranslationBlock *tb, int n,
intptr_t diff = addr - jmp_rx;
tcg_insn_unit insn;
- if (USE_REG_TB) {
- return;
- }
-
if (in_range_b(diff)) {
insn = B | (diff & 0x3fffffc);
} else {
@@ -2600,9 +2589,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
switch (opc) {
case INDEX_op_goto_ptr:
tcg_out32(s, MTSPR | RS(args[0]) | CTR);
- if (USE_REG_TB) {
- tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_TB, args[0]);
- }
tcg_out32(s, ADDI | TAI(TCG_REG_R3, 0, 0));
tcg_out32(s, BCCTR | BO_ALWAYS);
break;
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 03/29] tcg/ppc: Reinterpret tb-relative to TB+4
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
2023-10-18 22:25 ` [PULL 01/29] tcg/ppc: Untabify tcg-target.c.inc Richard Henderson
2023-10-18 22:25 ` [PULL 02/29] tcg/ppc: Enable direct branching tcg_out_goto_tb with TCG_REG_TB Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 04/29] tcg/ppc: Use ADDPCIS in tcg_out_tb_start Richard Henderson
` (25 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
It saves one insn to load the address of TB+4 instead of TB.
Adjust all of the indexing to match.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 9197cfd6c6..aafbf2db4e 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -215,6 +215,12 @@ static const int tcg_target_callee_save_regs[] = {
TCG_REG_R31
};
+/* For PPC, we use TB+4 instead of TB as the base. */
+static inline ptrdiff_t ppc_tbrel_diff(TCGContext *s, const void *target)
+{
+ return tcg_tbrel_diff(s, target) - 4;
+}
+
static inline bool in_range_b(tcg_target_long target)
{
return target == sextract64(target, 0, 26);
@@ -991,7 +997,7 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
}
/* Load addresses within the TB with one insn. */
- tb_diff = tcg_tbrel_diff(s, (void *)arg);
+ tb_diff = ppc_tbrel_diff(s, (void *)arg);
if (!in_prologue && USE_REG_TB && tb_diff == (int16_t)tb_diff) {
tcg_out32(s, ADDI | TAI(ret, TCG_REG_TB, tb_diff));
return;
@@ -1044,7 +1050,7 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
/* Use the constant pool, if possible. */
if (!in_prologue && USE_REG_TB) {
new_pool_label(s, arg, R_PPC_ADDR16, s->code_ptr,
- tcg_tbrel_diff(s, NULL));
+ ppc_tbrel_diff(s, NULL));
tcg_out32(s, LD | TAI(ret, TCG_REG_TB, 0));
return;
}
@@ -1104,7 +1110,7 @@ static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece,
*/
if (USE_REG_TB) {
rel = R_PPC_ADDR16;
- add = tcg_tbrel_diff(s, NULL);
+ add = ppc_tbrel_diff(s, NULL);
} else {
rel = R_PPC_ADDR32;
add = 0;
@@ -2531,7 +2537,6 @@ static void tcg_out_tb_start(TCGContext *s)
/* bcl 20,31,$+4 (preferred form for getting nia) */
tcg_out32(s, BC | BO_ALWAYS | BI(7, CR_SO) | 0x4 | LK);
tcg_out32(s, MFSPR | RT(TCG_REG_TB) | LR);
- tcg_out32(s, ADDI | TAI(TCG_REG_TB, TCG_REG_TB, -4));
}
}
@@ -2551,7 +2556,7 @@ static void tcg_out_goto_tb(TCGContext *s, int which)
/* When branch is out of range, fall through to indirect. */
if (USE_REG_TB) {
- ptrdiff_t offset = tcg_tbrel_diff(s, (void *)ptr);
+ ptrdiff_t offset = ppc_tbrel_diff(s, (void *)ptr);
tcg_out_mem_long(s, LD, LDX, TCG_REG_TMP1, TCG_REG_TB, offset);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, ptr - (int16_t)ptr);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 04/29] tcg/ppc: Use ADDPCIS in tcg_out_tb_start
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (2 preceding siblings ...)
2023-10-18 22:25 ` [PULL 03/29] tcg/ppc: Reinterpret tb-relative to TB+4 Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 05/29] tcg/ppc: Use ADDPCIS in tcg_out_movi_int Richard Henderson
` (24 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
With ISA v3.0, we can use ADDPCIS instead of BCL+MFLR to load NIA.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index aafbf2db4e..b0b8cd2390 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -362,6 +362,7 @@ static bool tcg_target_const_match(int64_t val, TCGType type, int ct, int vece)
#define CRNAND XO19(225)
#define CROR XO19(449)
#define CRNOR XO19( 33)
+#define ADDPCIS XO19( 2)
#define EXTSB XO31(954)
#define EXTSH XO31(922)
@@ -859,6 +860,19 @@ static inline void tcg_out_sari64(TCGContext *s, TCGReg dst, TCGReg src, int c)
tcg_out32(s, SRADI | RA(dst) | RS(src) | SH(c & 0x1f) | ((c >> 4) & 2));
}
+static void tcg_out_addpcis(TCGContext *s, TCGReg dst, intptr_t imm)
+{
+ uint32_t d0, d1, d2;
+
+ tcg_debug_assert((imm & 0xffff) == 0);
+ tcg_debug_assert(imm == (int32_t)imm);
+
+ d2 = extract32(imm, 16, 1);
+ d1 = extract32(imm, 17, 5);
+ d0 = extract32(imm, 22, 10);
+ tcg_out32(s, ADDPCIS | RT(dst) | (d1 << 16) | (d0 << 6) | d2);
+}
+
static void tcg_out_bswap16(TCGContext *s, TCGReg dst, TCGReg src, int flags)
{
TCGReg tmp = dst == src ? TCG_REG_R0 : dst;
@@ -2534,9 +2548,14 @@ static void tcg_out_tb_start(TCGContext *s)
{
/* Load TCG_REG_TB. */
if (USE_REG_TB) {
- /* bcl 20,31,$+4 (preferred form for getting nia) */
- tcg_out32(s, BC | BO_ALWAYS | BI(7, CR_SO) | 0x4 | LK);
- tcg_out32(s, MFSPR | RT(TCG_REG_TB) | LR);
+ if (have_isa_3_00) {
+ /* lnia REG_TB */
+ tcg_out_addpcis(s, TCG_REG_TB, 0);
+ } else {
+ /* bcl 20,31,$+4 (preferred form for getting nia) */
+ tcg_out32(s, BC | BO_ALWAYS | BI(7, CR_SO) | 0x4 | LK);
+ tcg_out32(s, MFSPR | RT(TCG_REG_TB) | LR);
+ }
}
}
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 05/29] tcg/ppc: Use ADDPCIS in tcg_out_movi_int
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (3 preceding siblings ...)
2023-10-18 22:25 ` [PULL 04/29] tcg/ppc: Use ADDPCIS in tcg_out_tb_start Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 06/29] tcg/ppc: Use ADDPCIS for the constant pool Richard Henderson
` (23 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index b0b8cd2390..226b5598ac 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -1055,6 +1055,19 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
return;
}
+ /* Load addresses within 2GB with 2 insns. */
+ if (have_isa_3_00) {
+ intptr_t hi = tcg_pcrel_diff(s, (void *)arg) - 4;
+ int16_t lo = hi;
+
+ hi -= lo;
+ if (hi == (int32_t)hi) {
+ tcg_out_addpcis(s, TCG_REG_TMP2, hi);
+ tcg_out32(s, ADDI | TAI(ret, TCG_REG_TMP2, lo));
+ return;
+ }
+ }
+
/* Load addresses within 2GB of TB with 2 (or rarely 3) insns. */
if (!in_prologue && USE_REG_TB && tb_diff == (int32_t)tb_diff) {
tcg_out_mem_long(s, ADDI, ADD, ret, TCG_REG_TB, tb_diff);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 06/29] tcg/ppc: Use ADDPCIS for the constant pool
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (4 preceding siblings ...)
2023-10-18 22:25 ` [PULL 05/29] tcg/ppc: Use ADDPCIS in tcg_out_movi_int Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 07/29] tcg/ppc: Use ADDPCIS in tcg_out_goto_tb Richard Henderson
` (22 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 226b5598ac..720f92ff33 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -1081,6 +1081,12 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
tcg_out32(s, LD | TAI(ret, TCG_REG_TB, 0));
return;
}
+ if (have_isa_3_00) {
+ tcg_out_addpcis(s, TCG_REG_TMP2, 0);
+ new_pool_label(s, arg, R_PPC_REL14, s->code_ptr, 0);
+ tcg_out32(s, LD | TAI(ret, TCG_REG_TMP2, 0));
+ return;
+ }
tmp = arg >> 31 >> 1;
tcg_out_movi(s, TCG_TYPE_I32, ret, tmp);
@@ -1138,6 +1144,10 @@ static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece,
if (USE_REG_TB) {
rel = R_PPC_ADDR16;
add = ppc_tbrel_diff(s, NULL);
+ } else if (have_isa_3_00) {
+ tcg_out_addpcis(s, TCG_REG_TMP1, 0);
+ rel = R_PPC_REL14;
+ add = 0;
} else {
rel = R_PPC_ADDR32;
add = 0;
@@ -1164,6 +1174,8 @@ static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece,
if (USE_REG_TB) {
tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, 0, 0));
load_insn |= RA(TCG_REG_TB);
+ } else if (have_isa_3_00) {
+ tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, TCG_REG_TMP1, 0));
} else {
tcg_out32(s, ADDIS | TAI(TCG_REG_TMP1, 0, 0));
tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, TCG_REG_TMP1, 0));
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 07/29] tcg/ppc: Use ADDPCIS in tcg_out_goto_tb
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (5 preceding siblings ...)
2023-10-18 22:25 ` [PULL 06/29] tcg/ppc: Use ADDPCIS for the constant pool Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 08/29] tcg/ppc: Use PADDI in tcg_out_movi Richard Henderson
` (21 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 720f92ff33..6337b1e8be 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2593,6 +2593,7 @@ static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg)
static void tcg_out_goto_tb(TCGContext *s, int which)
{
uintptr_t ptr = get_jmp_target_addr(s, which);
+ int16_t lo;
/* Direct branch will be patched by tb_target_set_jmp_target. */
set_jmp_insn_offset(s, which);
@@ -2602,9 +2603,15 @@ static void tcg_out_goto_tb(TCGContext *s, int which)
if (USE_REG_TB) {
ptrdiff_t offset = ppc_tbrel_diff(s, (void *)ptr);
tcg_out_mem_long(s, LD, LDX, TCG_REG_TMP1, TCG_REG_TB, offset);
+ } else if (have_isa_3_00) {
+ ptrdiff_t offset = tcg_pcrel_diff(s, (void *)ptr) - 4;
+ lo = offset;
+ tcg_out_addpcis(s, TCG_REG_TMP1, offset - lo);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, lo);
} else {
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, ptr - (int16_t)ptr);
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, (int16_t)ptr);
+ lo = ptr;
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, ptr - lo);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, lo);
}
tcg_out32(s, MTSPR | RS(TCG_REG_TMP1) | CTR);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 08/29] tcg/ppc: Use PADDI in tcg_out_movi
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (6 preceding siblings ...)
2023-10-18 22:25 ` [PULL 07/29] tcg/ppc: Use ADDPCIS in tcg_out_goto_tb Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 09/29] tcg/ppc: Use prefixed instructions in tcg_out_mem_long Richard Henderson
` (20 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Jordan Niethe
PADDI can load 34-bit immediates and 34-bit pc-relative addresses.
Reviewed-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 51 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 6337b1e8be..f4235383c6 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -719,6 +719,38 @@ static bool patch_reloc(tcg_insn_unit *code_ptr, int type,
return true;
}
+/* Ensure that the prefixed instruction does not cross a 64-byte boundary. */
+static bool tcg_out_need_prefix_align(TCGContext *s)
+{
+ return ((uintptr_t)s->code_ptr & 0x3f) == 0x3c;
+}
+
+static void tcg_out_prefix_align(TCGContext *s)
+{
+ if (tcg_out_need_prefix_align(s)) {
+ tcg_out32(s, NOP);
+ }
+}
+
+static ptrdiff_t tcg_pcrel_diff_for_prefix(TCGContext *s, const void *target)
+{
+ return tcg_pcrel_diff(s, target) - (tcg_out_need_prefix_align(s) ? 4 : 0);
+}
+
+/* Output Type 10 Prefix - Modified Load/Store Form (MLS:D) */
+static void tcg_out_mls_d(TCGContext *s, tcg_insn_unit opc, unsigned rt,
+ unsigned ra, tcg_target_long imm, bool r)
+{
+ tcg_insn_unit p, i;
+
+ p = OPCD(1) | (2 << 24) | (r << 20) | ((imm >> 16) & 0x3ffff);
+ i = opc | TAI(rt, ra, imm);
+
+ tcg_out_prefix_align(s);
+ tcg_out32(s, p);
+ tcg_out32(s, i);
+}
+
static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt,
TCGReg base, tcg_target_long offset);
@@ -1017,6 +1049,25 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
return;
}
+ /*
+ * Load values up to 34 bits, and pc-relative addresses,
+ * with one prefixed insn.
+ */
+ if (have_isa_3_10) {
+ if (arg == sextract64(arg, 0, 34)) {
+ /* pli ret,value = paddi ret,0,value,0 */
+ tcg_out_mls_d(s, ADDI, ret, 0, arg, 0);
+ return;
+ }
+
+ tmp = tcg_pcrel_diff_for_prefix(s, (void *)arg);
+ if (tmp == sextract64(tmp, 0, 34)) {
+ /* pla ret,value = paddi ret,0,value,1 */
+ tcg_out_mls_d(s, ADDI, ret, 0, tmp, 1);
+ return;
+ }
+ }
+
/* Load 32-bit immediates with two insns. Note that we've already
eliminated bare ADDIS, so we know both insns are required. */
if (TCG_TARGET_REG_BITS == 32 || arg == (int32_t)arg) {
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 09/29] tcg/ppc: Use prefixed instructions in tcg_out_mem_long
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (7 preceding siblings ...)
2023-10-18 22:25 ` [PULL 08/29] tcg/ppc: Use PADDI in tcg_out_movi Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 10/29] tcg/ppc: Use PLD in tcg_out_movi for constant pool Richard Henderson
` (19 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Jordan Niethe
When the offset is out of range of the non-prefixed insn, but
fits the 34-bit immediate of the prefixed insn, use that.
Reviewed-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 66 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index f4235383c6..34df9144cc 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -329,6 +329,15 @@ static bool tcg_target_const_match(int64_t val, TCGType type, int ct, int vece)
#define STDX XO31(149)
#define STQ XO62( 2)
+#define PLWA OPCD( 41)
+#define PLD OPCD( 57)
+#define PLXSD OPCD( 42)
+#define PLXV OPCD(25 * 2 + 1) /* force tx=1 */
+
+#define PSTD OPCD( 61)
+#define PSTXSD OPCD( 46)
+#define PSTXV OPCD(27 * 2 + 1) /* force sx=1 */
+
#define ADDIC OPCD( 12)
#define ADDI OPCD( 14)
#define ADDIS OPCD( 15)
@@ -737,6 +746,20 @@ static ptrdiff_t tcg_pcrel_diff_for_prefix(TCGContext *s, const void *target)
return tcg_pcrel_diff(s, target) - (tcg_out_need_prefix_align(s) ? 4 : 0);
}
+/* Output Type 00 Prefix - 8-Byte Load/Store Form (8LS:D) */
+static void tcg_out_8ls_d(TCGContext *s, tcg_insn_unit opc, unsigned rt,
+ unsigned ra, tcg_target_long imm, bool r)
+{
+ tcg_insn_unit p, i;
+
+ p = OPCD(1) | (r << 20) | ((imm >> 16) & 0x3ffff);
+ i = opc | TAI(rt, ra, imm);
+
+ tcg_out_prefix_align(s);
+ tcg_out32(s, p);
+ tcg_out32(s, i);
+}
+
/* Output Type 10 Prefix - Modified Load/Store Form (MLS:D) */
static void tcg_out_mls_d(TCGContext *s, tcg_insn_unit opc, unsigned rt,
unsigned ra, tcg_target_long imm, bool r)
@@ -1418,6 +1441,49 @@ static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt,
break;
}
+ /* For unaligned or large offsets, use the prefixed form. */
+ if (have_isa_3_10
+ && (offset != (int16_t)offset || (offset & align))
+ && offset == sextract64(offset, 0, 34)) {
+ /*
+ * Note that the MLS:D insns retain their un-prefixed opcode,
+ * while the 8LS:D insns use a different opcode space.
+ */
+ switch (opi) {
+ case LBZ:
+ case LHZ:
+ case LHA:
+ case LWZ:
+ case STB:
+ case STH:
+ case STW:
+ case ADDI:
+ tcg_out_mls_d(s, opi, rt, base, offset, 0);
+ return;
+ case LWA:
+ tcg_out_8ls_d(s, PLWA, rt, base, offset, 0);
+ return;
+ case LD:
+ tcg_out_8ls_d(s, PLD, rt, base, offset, 0);
+ return;
+ case STD:
+ tcg_out_8ls_d(s, PSTD, rt, base, offset, 0);
+ return;
+ case LXSD:
+ tcg_out_8ls_d(s, PLXSD, rt & 31, base, offset, 0);
+ return;
+ case STXSD:
+ tcg_out_8ls_d(s, PSTXSD, rt & 31, base, offset, 0);
+ return;
+ case LXV:
+ tcg_out_8ls_d(s, PLXV, rt & 31, base, offset, 0);
+ return;
+ case STXV:
+ tcg_out_8ls_d(s, PSTXV, rt & 31, base, offset, 0);
+ return;
+ }
+ }
+
/* For unaligned, or very large offsets, use the indexed form. */
if (offset & align || offset != (int32_t)offset || opi == 0) {
if (rs == base) {
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 10/29] tcg/ppc: Use PLD in tcg_out_movi for constant pool
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (8 preceding siblings ...)
2023-10-18 22:25 ` [PULL 09/29] tcg/ppc: Use prefixed instructions in tcg_out_mem_long Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 11/29] tcg/ppc: Use prefixed instructions in tcg_out_dupi_vec Richard Henderson
` (18 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
The prefixed instruction has a pc-relative form to use here.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 34df9144cc..79e82d2f94 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -101,6 +101,10 @@
#define ALL_GENERAL_REGS 0xffffffffu
#define ALL_VECTOR_REGS 0xffffffff00000000ull
+#ifndef R_PPC64_PCREL34
+#define R_PPC64_PCREL34 132
+#endif
+
#define have_isel (cpuinfo & CPUINFO_ISEL)
#ifndef CONFIG_SOFTMMU
@@ -266,6 +270,19 @@ static bool reloc_pc14(tcg_insn_unit *src_rw, const tcg_insn_unit *target)
return false;
}
+static bool reloc_pc34(tcg_insn_unit *src_rw, const tcg_insn_unit *target)
+{
+ const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw);
+ ptrdiff_t disp = tcg_ptr_byte_diff(target, src_rx);
+
+ if (disp == sextract64(disp, 0, 34)) {
+ src_rw[0] = (src_rw[0] & ~0x3ffff) | ((disp >> 16) & 0x3ffff);
+ src_rw[1] = (src_rw[1] & ~0xffff) | (disp & 0xffff);
+ return true;
+ }
+ return false;
+}
+
/* test if a constant matches the constraint */
static bool tcg_target_const_match(int64_t val, TCGType type, int ct, int vece)
{
@@ -696,6 +713,8 @@ static bool patch_reloc(tcg_insn_unit *code_ptr, int type,
return reloc_pc14(code_ptr, target);
case R_PPC_REL24:
return reloc_pc24(code_ptr, target);
+ case R_PPC64_PCREL34:
+ return reloc_pc34(code_ptr, target);
case R_PPC_ADDR16:
/*
* We are (slightly) abusing this relocation type. In particular,
@@ -1155,6 +1174,11 @@ static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
tcg_out32(s, LD | TAI(ret, TCG_REG_TB, 0));
return;
}
+ if (have_isa_3_10) {
+ tcg_out_8ls_d(s, PLD, ret, 0, 0, 1);
+ new_pool_label(s, arg, R_PPC64_PCREL34, s->code_ptr - 2, 0);
+ return;
+ }
if (have_isa_3_00) {
tcg_out_addpcis(s, TCG_REG_TMP2, 0);
new_pool_label(s, arg, R_PPC_REL14, s->code_ptr, 0);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 11/29] tcg/ppc: Use prefixed instructions in tcg_out_dupi_vec
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (9 preceding siblings ...)
2023-10-18 22:25 ` [PULL 10/29] tcg/ppc: Use PLD in tcg_out_movi for constant pool Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 12/29] tcg/ppc: Use PLD in tcg_out_goto_tb Richard Henderson
` (17 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
The prefixed instructions have a pc-relative form to use here.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 79e82d2f94..db3212083b 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -1242,6 +1242,15 @@ static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece,
if (USE_REG_TB) {
rel = R_PPC_ADDR16;
add = ppc_tbrel_diff(s, NULL);
+ } else if (have_isa_3_10) {
+ if (type == TCG_TYPE_V64) {
+ tcg_out_8ls_d(s, PLXSD, ret & 31, 0, 0, 1);
+ new_pool_label(s, val, R_PPC64_PCREL34, s->code_ptr - 2, 0);
+ } else {
+ tcg_out_8ls_d(s, PLXV, ret & 31, 0, 0, 1);
+ new_pool_l2(s, R_PPC64_PCREL34, s->code_ptr - 2, 0, val, val);
+ }
+ return;
} else if (have_isa_3_00) {
tcg_out_addpcis(s, TCG_REG_TMP1, 0);
rel = R_PPC_REL14;
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 12/29] tcg/ppc: Use PLD in tcg_out_goto_tb
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (10 preceding siblings ...)
2023-10-18 22:25 ` [PULL 11/29] tcg/ppc: Use prefixed instructions in tcg_out_dupi_vec Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 13/29] tcg/ppc: Disable TCG_REG_TB for Power9/Power10 Richard Henderson
` (16 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index db3212083b..6496f76e41 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2753,6 +2753,9 @@ static void tcg_out_goto_tb(TCGContext *s, int which)
if (USE_REG_TB) {
ptrdiff_t offset = ppc_tbrel_diff(s, (void *)ptr);
tcg_out_mem_long(s, LD, LDX, TCG_REG_TMP1, TCG_REG_TB, offset);
+ } else if (have_isa_3_10) {
+ ptrdiff_t offset = tcg_pcrel_diff_for_prefix(s, (void *)ptr);
+ tcg_out_8ls_d(s, PLD, TCG_REG_TMP1, 0, offset, 1);
} else if (have_isa_3_00) {
ptrdiff_t offset = tcg_pcrel_diff(s, (void *)ptr) - 4;
lo = offset;
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 13/29] tcg/ppc: Disable TCG_REG_TB for Power9/Power10
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (11 preceding siblings ...)
2023-10-18 22:25 ` [PULL 12/29] tcg/ppc: Use PLD in tcg_out_goto_tb Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 14/29] tcg: Introduce tcg_use_softmmu Richard Henderson
` (15 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
This appears to slightly improve performance on power9/10.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 6496f76e41..c31da4da9d 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -83,7 +83,7 @@
#define TCG_VEC_TMP2 TCG_REG_V1
#define TCG_REG_TB TCG_REG_R31
-#define USE_REG_TB (TCG_TARGET_REG_BITS == 64)
+#define USE_REG_TB (TCG_TARGET_REG_BITS == 64 && !have_isa_3_00)
/* Shorthand for size of a pointer. Avoid promotion to unsigned. */
#define SZP ((int)sizeof(void *))
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 14/29] tcg: Introduce tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (12 preceding siblings ...)
2023-10-18 22:25 ` [PULL 13/29] tcg/ppc: Disable TCG_REG_TB for Power9/Power10 Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 15/29] tcg: Provide guest_base fallback for system mode Richard Henderson
` (14 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Begin disconnecting CONFIG_SOFTMMU from !CONFIG_USER_ONLY.
Introduce a variable which can be set at startup to select
one method or another for user-only.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/tcg/tcg.h | 8 ++++++--
tcg/tcg-op-ldst.c | 14 +++++++-------
tcg/tcg.c | 9 ++++++---
3 files changed, 19 insertions(+), 12 deletions(-)
diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h
index 680ff00722..a9282cdcc6 100644
--- a/include/tcg/tcg.h
+++ b/include/tcg/tcg.h
@@ -488,11 +488,9 @@ struct TCGContext {
int nb_ops;
TCGType addr_type; /* TCG_TYPE_I32 or TCG_TYPE_I64 */
-#ifdef CONFIG_SOFTMMU
int page_mask;
uint8_t page_bits;
uint8_t tlb_dyn_max_bits;
-#endif
uint8_t insn_start_words;
TCGBar guest_mo;
@@ -573,6 +571,12 @@ static inline bool temp_readonly(TCGTemp *ts)
return ts->kind >= TEMP_FIXED;
}
+#ifdef CONFIG_USER_ONLY
+extern bool tcg_use_softmmu;
+#else
+#define tcg_use_softmmu true
+#endif
+
extern __thread TCGContext *tcg_ctx;
extern const void *tcg_code_gen_epilogue;
extern uintptr_t tcg_splitwx_diff;
diff --git a/tcg/tcg-op-ldst.c b/tcg/tcg-op-ldst.c
index df4f22c427..2b96687699 100644
--- a/tcg/tcg-op-ldst.c
+++ b/tcg/tcg-op-ldst.c
@@ -34,13 +34,13 @@
static void check_max_alignment(unsigned a_bits)
{
-#if defined(CONFIG_SOFTMMU)
/*
* The requested alignment cannot overlap the TLB flags.
* FIXME: Must keep the count up-to-date with "exec/cpu-all.h".
*/
- tcg_debug_assert(a_bits + 5 <= tcg_ctx->page_bits);
-#endif
+ if (tcg_use_softmmu) {
+ tcg_debug_assert(a_bits + 5 <= tcg_ctx->page_bits);
+ }
}
static MemOp tcg_canonicalize_memop(MemOp op, bool is64, bool st)
@@ -411,10 +411,11 @@ void tcg_gen_qemu_st_i64_chk(TCGv_i64 val, TCGTemp *addr, TCGArg idx,
*/
static bool use_two_i64_for_i128(MemOp mop)
{
-#ifdef CONFIG_SOFTMMU
/* Two softmmu tlb lookups is larger than one function call. */
- return false;
-#else
+ if (tcg_use_softmmu) {
+ return false;
+ }
+
/*
* For user-only, two 64-bit operations may well be smaller than a call.
* Determine if that would be legal for the requested atomicity.
@@ -432,7 +433,6 @@ static bool use_two_i64_for_i128(MemOp mop)
default:
g_assert_not_reached();
}
-#endif
}
static void canonicalize_memop_i128_as_i64(MemOp ret[2], MemOp orig)
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 637b9e6870..d3a4a17ef2 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -226,6 +226,10 @@ static TCGAtomAlign atom_and_align_for_opc(TCGContext *s, MemOp opc,
MemOp host_atom, bool allow_two_ops)
__attribute__((unused));
+#ifdef CONFIG_USER_ONLY
+bool tcg_use_softmmu;
+#endif
+
TCGContext tcg_init_ctx;
__thread TCGContext *tcg_ctx;
@@ -404,13 +408,12 @@ static uintptr_t G_GNUC_UNUSED get_jmp_target_addr(TCGContext *s, int which)
return (uintptr_t)tcg_splitwx_to_rx(&s->gen_tb->jmp_target_addr[which]);
}
-#if defined(CONFIG_SOFTMMU) && !defined(CONFIG_TCG_INTERPRETER)
-static int tlb_mask_table_ofs(TCGContext *s, int which)
+static int __attribute__((unused))
+tlb_mask_table_ofs(TCGContext *s, int which)
{
return (offsetof(CPUNegativeOffsetState, tlb.f[which]) -
sizeof(CPUNegativeOffsetState));
}
-#endif
/* Signal overflow, starting over with fewer guest insns. */
static G_NORETURN
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 15/29] tcg: Provide guest_base fallback for system mode
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (13 preceding siblings ...)
2023-10-18 22:25 ` [PULL 14/29] tcg: Introduce tcg_use_softmmu Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-19 16:37 ` Stefan Hajnoczi
2023-10-18 22:25 ` [PULL 16/29] tcg/arm: Use tcg_use_softmmu Richard Henderson
` (13 subsequent siblings)
28 siblings, 1 reply; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Provide a define to allow !tcg_use_softmmu code paths to
compile in system mode, but require elimination.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/tcg.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tcg/tcg.c b/tcg/tcg.c
index d3a4a17ef2..35158a0846 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -178,6 +178,10 @@ static bool tcg_target_const_match(int64_t val, TCGType type, int ct, int vece);
static int tcg_out_ldst_finalize(TCGContext *s);
#endif
+#ifndef CONFIG_USER_ONLY
+#define guest_base ({ qemu_build_not_reached(); (uintptr_t)0; })
+#endif
+
typedef struct TCGLdstHelperParam {
TCGReg (*ra_gen)(TCGContext *s, const TCGLabelQemuLdst *l, int arg_reg);
unsigned ntmp;
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* Re: [PULL 15/29] tcg: Provide guest_base fallback for system mode
2023-10-18 22:25 ` [PULL 15/29] tcg: Provide guest_base fallback for system mode Richard Henderson
@ 2023-10-19 16:37 ` Stefan Hajnoczi
0 siblings, 0 replies; 31+ messages in thread
From: Stefan Hajnoczi @ 2023-10-19 16:37 UTC (permalink / raw)
To: Richard Henderson; +Cc: qemu-devel, Philippe Mathieu-Daudé
On Wed, 18 Oct 2023 at 15:30, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Provide a define to allow !tcg_use_softmmu code paths to
> compile in system mode, but require elimination.
>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
> tcg/tcg.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/tcg/tcg.c b/tcg/tcg.c
> index d3a4a17ef2..35158a0846 100644
> --- a/tcg/tcg.c
> +++ b/tcg/tcg.c
> @@ -178,6 +178,10 @@ static bool tcg_target_const_match(int64_t val, TCGType type, int ct, int vece);
> static int tcg_out_ldst_finalize(TCGContext *s);
> #endif
>
> +#ifndef CONFIG_USER_ONLY
> +#define guest_base ({ qemu_build_not_reached(); (uintptr_t)0; })
> +#endif
Please take a look at this CI failure:
cc -m64 -mcx16 -Itcg/libtcg_system.fa.p -Itcg -I../tcg -I. -Iqapi
-Itrace -Iui -Iui/shader -I/usr/local/include/glib-2.0
-I/usr/local/lib/glib-2.0/include -I/usr/local/include
-fcolor-diagnostics -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g
-fstack-protector-strong -Wundef -Wwrite-strings -Wmissing-prototypes
-Wstrict-prototypes -Wredundant-decls -Wold-style-definition
-Wtype-limits -Wformat-security -Wformat-y2k -Winit-self
-Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels
-Wexpansion-to-defined -Wmissing-format-attribute
-Wno-initializer-overrides -Wno-missing-include-dirs
-Wno-shift-negative-value -Wno-string-plus-int
-Wno-typedef-redefinition -Wno-tautological-type-limit-compare
-Wno-psabi -Wno-gnu-variable-sized-type-not-at-end -Wthread-safety
-iquote . -iquote /tmp/cirrus-ci-build -iquote
/tmp/cirrus-ci-build/include -iquote
/tmp/cirrus-ci-build/host/include/x86_64 -iquote
/tmp/cirrus-ci-build/host/include/generic -iquote
/tmp/cirrus-ci-build/tcg/i386 -pthread -D_GNU_SOURCE
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing
-fno-common -fwrapv -fPIE -DCONFIG_SOFTMMU -MD -MQ
tcg/libtcg_system.fa.p/tcg.c.o -MF tcg/libtcg_system.fa.p/tcg.c.o.d -o
tcg/libtcg_system.fa.p/tcg.c.o -c ../tcg/tcg.c
In file included from ../tcg/tcg.c:744:
/tmp/cirrus-ci-build/tcg/i386/tcg-target.c.inc:1953:35: error: cannot
take the address of an rvalue of type 'uintptr_t' (aka 'unsigned
long')
if (sysarch(AMD64_SET_GSBASE, &guest_base) == 0) {
^~~~~~~~~~~
1 error generated.
https://gitlab.com/qemu-project/qemu/-/jobs/5329820109
> +
> typedef struct TCGLdstHelperParam {
> TCGReg (*ra_gen)(TCGContext *s, const TCGLabelQemuLdst *l, int arg_reg);
> unsigned ntmp;
> --
> 2.34.1
>
>
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PULL 16/29] tcg/arm: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (14 preceding siblings ...)
2023-10-18 22:25 ` [PULL 15/29] tcg: Provide guest_base fallback for system mode Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 17/29] tcg/aarch64: " Richard Henderson
` (12 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/arm/tcg-target.c.inc | 203 +++++++++++++++++++--------------------
1 file changed, 97 insertions(+), 106 deletions(-)
diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index 0d9c2d157b..fc78566494 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -89,9 +89,7 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot)
#define TCG_REG_TMP TCG_REG_R12
#define TCG_VEC_TMP TCG_REG_Q15
-#ifndef CONFIG_SOFTMMU
#define TCG_REG_GUEST_BASE TCG_REG_R11
-#endif
typedef enum {
COND_EQ = 0x0,
@@ -356,14 +354,8 @@ static bool patch_reloc(tcg_insn_unit *code_ptr, int type,
* r0-r3 will be overwritten when reading the tlb entry (system-mode only);
* r14 will be overwritten by the BLNE branching to the slow path.
*/
-#ifdef CONFIG_SOFTMMU
#define ALL_QLDST_REGS \
- (ALL_GENERAL_REGS & ~((1 << TCG_REG_R0) | (1 << TCG_REG_R1) | \
- (1 << TCG_REG_R2) | (1 << TCG_REG_R3) | \
- (1 << TCG_REG_R14)))
-#else
-#define ALL_QLDST_REGS (ALL_GENERAL_REGS & ~(1 << TCG_REG_R14))
-#endif
+ (ALL_GENERAL_REGS & ~((tcg_use_softmmu ? 0xf : 0) | (1 << TCG_REG_R14)))
/*
* ARM immediates for ALU instructions are made of an unsigned 8-bit
@@ -1387,113 +1379,115 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
MemOp opc = get_memop(oi);
unsigned a_mask;
-#ifdef CONFIG_SOFTMMU
- *h = (HostAddress){
- .cond = COND_AL,
- .base = addrlo,
- .index = TCG_REG_R1,
- .index_scratch = true,
- };
-#else
- *h = (HostAddress){
- .cond = COND_AL,
- .base = addrlo,
- .index = guest_base ? TCG_REG_GUEST_BASE : -1,
- .index_scratch = false,
- };
-#endif
+ if (tcg_use_softmmu) {
+ *h = (HostAddress){
+ .cond = COND_AL,
+ .base = addrlo,
+ .index = TCG_REG_R1,
+ .index_scratch = true,
+ };
+ } else {
+ *h = (HostAddress){
+ .cond = COND_AL,
+ .base = addrlo,
+ .index = guest_base ? TCG_REG_GUEST_BASE : -1,
+ .index_scratch = false,
+ };
+ }
h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, false);
a_mask = (1 << h->aa.align) - 1;
-#ifdef CONFIG_SOFTMMU
- int mem_index = get_mmuidx(oi);
- int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read)
- : offsetof(CPUTLBEntry, addr_write);
- int fast_off = tlb_mask_table_ofs(s, mem_index);
- unsigned s_mask = (1 << (opc & MO_SIZE)) - 1;
- TCGReg t_addr;
+ if (tcg_use_softmmu) {
+ int mem_index = get_mmuidx(oi);
+ int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read)
+ : offsetof(CPUTLBEntry, addr_write);
+ int fast_off = tlb_mask_table_ofs(s, mem_index);
+ unsigned s_mask = (1 << (opc & MO_SIZE)) - 1;
+ TCGReg t_addr;
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addrlo;
- ldst->addrhi_reg = addrhi;
+ ldst = new_ldst_label(s);
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addrlo;
+ ldst->addrhi_reg = addrhi;
- /* Load cpu->neg.tlb.f[mmu_idx].{mask,table} into {r0,r1}. */
- QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, mask) != 0);
- QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, table) != 4);
- tcg_out_ldrd_8(s, COND_AL, TCG_REG_R0, TCG_AREG0, fast_off);
+ /* Load cpu->neg.tlb.f[mmu_idx].{mask,table} into {r0,r1}. */
+ QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, mask) != 0);
+ QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, table) != 4);
+ tcg_out_ldrd_8(s, COND_AL, TCG_REG_R0, TCG_AREG0, fast_off);
- /* Extract the tlb index from the address into R0. */
- tcg_out_dat_reg(s, COND_AL, ARITH_AND, TCG_REG_R0, TCG_REG_R0, addrlo,
- SHIFT_IMM_LSR(s->page_bits - CPU_TLB_ENTRY_BITS));
+ /* Extract the tlb index from the address into R0. */
+ tcg_out_dat_reg(s, COND_AL, ARITH_AND, TCG_REG_R0, TCG_REG_R0, addrlo,
+ SHIFT_IMM_LSR(s->page_bits - CPU_TLB_ENTRY_BITS));
- /*
- * Add the tlb_table pointer, creating the CPUTLBEntry address in R1.
- * Load the tlb comparator into R2/R3 and the fast path addend into R1.
- */
- QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
- if (cmp_off == 0) {
- if (s->addr_type == TCG_TYPE_I32) {
- tcg_out_ld32_rwb(s, COND_AL, TCG_REG_R2, TCG_REG_R1, TCG_REG_R0);
+ /*
+ * Add the tlb_table pointer, creating the CPUTLBEntry address in R1.
+ * Load the tlb comparator into R2/R3 and the fast path addend into R1.
+ */
+ QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
+ if (cmp_off == 0) {
+ if (s->addr_type == TCG_TYPE_I32) {
+ tcg_out_ld32_rwb(s, COND_AL, TCG_REG_R2,
+ TCG_REG_R1, TCG_REG_R0);
+ } else {
+ tcg_out_ldrd_rwb(s, COND_AL, TCG_REG_R2,
+ TCG_REG_R1, TCG_REG_R0);
+ }
} else {
- tcg_out_ldrd_rwb(s, COND_AL, TCG_REG_R2, TCG_REG_R1, TCG_REG_R0);
+ tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
+ TCG_REG_R1, TCG_REG_R1, TCG_REG_R0, 0);
+ if (s->addr_type == TCG_TYPE_I32) {
+ tcg_out_ld32_12(s, COND_AL, TCG_REG_R2, TCG_REG_R1, cmp_off);
+ } else {
+ tcg_out_ldrd_8(s, COND_AL, TCG_REG_R2, TCG_REG_R1, cmp_off);
+ }
}
- } else {
- tcg_out_dat_reg(s, COND_AL, ARITH_ADD,
- TCG_REG_R1, TCG_REG_R1, TCG_REG_R0, 0);
- if (s->addr_type == TCG_TYPE_I32) {
- tcg_out_ld32_12(s, COND_AL, TCG_REG_R2, TCG_REG_R1, cmp_off);
+
+ /* Load the tlb addend. */
+ tcg_out_ld32_12(s, COND_AL, TCG_REG_R1, TCG_REG_R1,
+ offsetof(CPUTLBEntry, addend));
+
+ /*
+ * Check alignment, check comparators.
+ * Do this in 2-4 insns. Use MOVW for v7, if possible,
+ * to reduce the number of sequential conditional instructions.
+ * Almost all guests have at least 4k pages, which means that we need
+ * to clear at least 9 bits even for an 8-byte memory, which means it
+ * isn't worth checking for an immediate operand for BIC.
+ *
+ * For unaligned accesses, test the page of the last unit of alignment.
+ * This leaves the least significant alignment bits unchanged, and of
+ * course must be zero.
+ */
+ t_addr = addrlo;
+ if (a_mask < s_mask) {
+ t_addr = TCG_REG_R0;
+ tcg_out_dat_imm(s, COND_AL, ARITH_ADD, t_addr,
+ addrlo, s_mask - a_mask);
+ }
+ if (use_armv7_instructions && s->page_bits <= 16) {
+ tcg_out_movi32(s, COND_AL, TCG_REG_TMP, ~(s->page_mask | a_mask));
+ tcg_out_dat_reg(s, COND_AL, ARITH_BIC, TCG_REG_TMP,
+ t_addr, TCG_REG_TMP, 0);
+ tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0,
+ TCG_REG_R2, TCG_REG_TMP, 0);
} else {
- tcg_out_ldrd_8(s, COND_AL, TCG_REG_R2, TCG_REG_R1, cmp_off);
+ if (a_mask) {
+ tcg_debug_assert(a_mask <= 0xff);
+ tcg_out_dat_imm(s, COND_AL, ARITH_TST, 0, addrlo, a_mask);
+ }
+ tcg_out_dat_reg(s, COND_AL, ARITH_MOV, TCG_REG_TMP, 0, t_addr,
+ SHIFT_IMM_LSR(s->page_bits));
+ tcg_out_dat_reg(s, (a_mask ? COND_EQ : COND_AL), ARITH_CMP,
+ 0, TCG_REG_R2, TCG_REG_TMP,
+ SHIFT_IMM_LSL(s->page_bits));
}
- }
- /* Load the tlb addend. */
- tcg_out_ld32_12(s, COND_AL, TCG_REG_R1, TCG_REG_R1,
- offsetof(CPUTLBEntry, addend));
-
- /*
- * Check alignment, check comparators.
- * Do this in 2-4 insns. Use MOVW for v7, if possible,
- * to reduce the number of sequential conditional instructions.
- * Almost all guests have at least 4k pages, which means that we need
- * to clear at least 9 bits even for an 8-byte memory, which means it
- * isn't worth checking for an immediate operand for BIC.
- *
- * For unaligned accesses, test the page of the last unit of alignment.
- * This leaves the least significant alignment bits unchanged, and of
- * course must be zero.
- */
- t_addr = addrlo;
- if (a_mask < s_mask) {
- t_addr = TCG_REG_R0;
- tcg_out_dat_imm(s, COND_AL, ARITH_ADD, t_addr,
- addrlo, s_mask - a_mask);
- }
- if (use_armv7_instructions && s->page_bits <= 16) {
- tcg_out_movi32(s, COND_AL, TCG_REG_TMP, ~(s->page_mask | a_mask));
- tcg_out_dat_reg(s, COND_AL, ARITH_BIC, TCG_REG_TMP,
- t_addr, TCG_REG_TMP, 0);
- tcg_out_dat_reg(s, COND_AL, ARITH_CMP, 0, TCG_REG_R2, TCG_REG_TMP, 0);
- } else {
- if (a_mask) {
- tcg_debug_assert(a_mask <= 0xff);
- tcg_out_dat_imm(s, COND_AL, ARITH_TST, 0, addrlo, a_mask);
+ if (s->addr_type != TCG_TYPE_I32) {
+ tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0, TCG_REG_R3, addrhi, 0);
}
- tcg_out_dat_reg(s, COND_AL, ARITH_MOV, TCG_REG_TMP, 0, t_addr,
- SHIFT_IMM_LSR(s->page_bits));
- tcg_out_dat_reg(s, (a_mask ? COND_EQ : COND_AL), ARITH_CMP,
- 0, TCG_REG_R2, TCG_REG_TMP,
- SHIFT_IMM_LSL(s->page_bits));
- }
-
- if (s->addr_type != TCG_TYPE_I32) {
- tcg_out_dat_reg(s, COND_EQ, ARITH_CMP, 0, TCG_REG_R3, addrhi, 0);
- }
-#else
- if (a_mask) {
+ } else if (a_mask) {
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
ldst->oi = oi;
@@ -1505,7 +1499,6 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
/* tst addr, #mask */
tcg_out_dat_imm(s, COND_AL, ARITH_TST, 0, addrlo, a_mask);
}
-#endif
return ldst;
}
@@ -2931,12 +2924,10 @@ static void tcg_target_qemu_prologue(TCGContext *s)
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
-#ifndef CONFIG_SOFTMMU
- if (guest_base) {
+ if (!tcg_use_softmmu && guest_base) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_GUEST_BASE, guest_base);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_GUEST_BASE);
}
-#endif
tcg_out_b_reg(s, COND_AL, tcg_target_call_iarg_regs[1]);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 17/29] tcg/aarch64: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (15 preceding siblings ...)
2023-10-18 22:25 ` [PULL 16/29] tcg/arm: Use tcg_use_softmmu Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 18/29] tcg/i386: " Richard Henderson
` (11 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/aarch64/tcg-target.c.inc | 177 +++++++++++++++++------------------
1 file changed, 88 insertions(+), 89 deletions(-)
diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc
index 3afb896a3a..a3efa1e67a 100644
--- a/tcg/aarch64/tcg-target.c.inc
+++ b/tcg/aarch64/tcg-target.c.inc
@@ -77,9 +77,7 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot)
#define TCG_REG_TMP2 TCG_REG_X30
#define TCG_VEC_TMP0 TCG_REG_V31
-#ifndef CONFIG_SOFTMMU
#define TCG_REG_GUEST_BASE TCG_REG_X28
-#endif
static bool reloc_pc26(tcg_insn_unit *src_rw, const tcg_insn_unit *target)
{
@@ -1664,97 +1662,98 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
s_bits == MO_128);
a_mask = (1 << h->aa.align) - 1;
-#ifdef CONFIG_SOFTMMU
- unsigned s_mask = (1u << s_bits) - 1;
- unsigned mem_index = get_mmuidx(oi);
- TCGReg addr_adj;
- TCGType mask_type;
- uint64_t compare_mask;
+ if (tcg_use_softmmu) {
+ unsigned s_mask = (1u << s_bits) - 1;
+ unsigned mem_index = get_mmuidx(oi);
+ TCGReg addr_adj;
+ TCGType mask_type;
+ uint64_t compare_mask;
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addr_reg;
-
- mask_type = (s->page_bits + s->tlb_dyn_max_bits > 32
- ? TCG_TYPE_I64 : TCG_TYPE_I32);
-
- /* Load cpu->neg.tlb.f[mmu_idx].{mask,table} into {tmp0,tmp1}. */
- QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, mask) != 0);
- QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, table) != 8);
- tcg_out_insn(s, 3314, LDP, TCG_REG_TMP0, TCG_REG_TMP1, TCG_AREG0,
- tlb_mask_table_ofs(s, mem_index), 1, 0);
-
- /* Extract the TLB index from the address into X0. */
- tcg_out_insn(s, 3502S, AND_LSR, mask_type == TCG_TYPE_I64,
- TCG_REG_TMP0, TCG_REG_TMP0, addr_reg,
- s->page_bits - CPU_TLB_ENTRY_BITS);
-
- /* Add the tlb_table pointer, forming the CPUTLBEntry address in TMP1. */
- tcg_out_insn(s, 3502, ADD, 1, TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP0);
-
- /* Load the tlb comparator into TMP0, and the fast path addend into TMP1. */
- QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
- tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP1,
- is_ld ? offsetof(CPUTLBEntry, addr_read)
- : offsetof(CPUTLBEntry, addr_write));
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1,
- offsetof(CPUTLBEntry, addend));
-
- /*
- * For aligned accesses, we check the first byte and include the alignment
- * bits within the address. For unaligned access, we check that we don't
- * cross pages using the address of the last byte of the access.
- */
- if (a_mask >= s_mask) {
- addr_adj = addr_reg;
- } else {
- addr_adj = TCG_REG_TMP2;
- tcg_out_insn(s, 3401, ADDI, addr_type,
- addr_adj, addr_reg, s_mask - a_mask);
- }
- compare_mask = (uint64_t)s->page_mask | a_mask;
-
- /* Store the page mask part of the address into TMP2. */
- tcg_out_logicali(s, I3404_ANDI, addr_type, TCG_REG_TMP2,
- addr_adj, compare_mask);
-
- /* Perform the address comparison. */
- tcg_out_cmp(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2, 0);
-
- /* If not equal, we jump to the slow path. */
- ldst->label_ptr[0] = s->code_ptr;
- tcg_out_insn(s, 3202, B_C, TCG_COND_NE, 0);
-
- h->base = TCG_REG_TMP1;
- h->index = addr_reg;
- h->index_ext = addr_type;
-#else
- if (a_mask) {
ldst = new_ldst_label(s);
-
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addr_reg;
- /* tst addr, #mask */
- tcg_out_logicali(s, I3404_ANDSI, 0, TCG_REG_XZR, addr_reg, a_mask);
+ mask_type = (s->page_bits + s->tlb_dyn_max_bits > 32
+ ? TCG_TYPE_I64 : TCG_TYPE_I32);
- /* b.ne slow_path */
+ /* Load cpu->neg.tlb.f[mmu_idx].{mask,table} into {tmp0,tmp1}. */
+ QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, mask) != 0);
+ QEMU_BUILD_BUG_ON(offsetof(CPUTLBDescFast, table) != 8);
+ tcg_out_insn(s, 3314, LDP, TCG_REG_TMP0, TCG_REG_TMP1, TCG_AREG0,
+ tlb_mask_table_ofs(s, mem_index), 1, 0);
+
+ /* Extract the TLB index from the address into X0. */
+ tcg_out_insn(s, 3502S, AND_LSR, mask_type == TCG_TYPE_I64,
+ TCG_REG_TMP0, TCG_REG_TMP0, addr_reg,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
+
+ /* Add the tlb_table pointer, forming the CPUTLBEntry address. */
+ tcg_out_insn(s, 3502, ADD, 1, TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP0);
+
+ /* Load the tlb comparator into TMP0, and the fast path addend. */
+ QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
+ tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP1,
+ is_ld ? offsetof(CPUTLBEntry, addr_read)
+ : offsetof(CPUTLBEntry, addr_write));
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1,
+ offsetof(CPUTLBEntry, addend));
+
+ /*
+ * For aligned accesses, we check the first byte and include
+ * the alignment bits within the address. For unaligned access,
+ * we check that we don't cross pages using the address of the
+ * last byte of the access.
+ */
+ if (a_mask >= s_mask) {
+ addr_adj = addr_reg;
+ } else {
+ addr_adj = TCG_REG_TMP2;
+ tcg_out_insn(s, 3401, ADDI, addr_type,
+ addr_adj, addr_reg, s_mask - a_mask);
+ }
+ compare_mask = (uint64_t)s->page_mask | a_mask;
+
+ /* Store the page mask part of the address into TMP2. */
+ tcg_out_logicali(s, I3404_ANDI, addr_type, TCG_REG_TMP2,
+ addr_adj, compare_mask);
+
+ /* Perform the address comparison. */
+ tcg_out_cmp(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2, 0);
+
+ /* If not equal, we jump to the slow path. */
ldst->label_ptr[0] = s->code_ptr;
tcg_out_insn(s, 3202, B_C, TCG_COND_NE, 0);
- }
- if (guest_base || addr_type == TCG_TYPE_I32) {
- h->base = TCG_REG_GUEST_BASE;
+ h->base = TCG_REG_TMP1;
h->index = addr_reg;
h->index_ext = addr_type;
} else {
- h->base = addr_reg;
- h->index = TCG_REG_XZR;
- h->index_ext = TCG_TYPE_I64;
+ if (a_mask) {
+ ldst = new_ldst_label(s);
+
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addr_reg;
+
+ /* tst addr, #mask */
+ tcg_out_logicali(s, I3404_ANDSI, 0, TCG_REG_XZR, addr_reg, a_mask);
+
+ /* b.ne slow_path */
+ ldst->label_ptr[0] = s->code_ptr;
+ tcg_out_insn(s, 3202, B_C, TCG_COND_NE, 0);
+ }
+
+ if (guest_base || addr_type == TCG_TYPE_I32) {
+ h->base = TCG_REG_GUEST_BASE;
+ h->index = addr_reg;
+ h->index_ext = addr_type;
+ } else {
+ h->base = addr_reg;
+ h->index = TCG_REG_XZR;
+ h->index_ext = TCG_TYPE_I64;
+ }
}
-#endif
return ldst;
}
@@ -3117,16 +3116,16 @@ static void tcg_target_qemu_prologue(TCGContext *s)
tcg_set_frame(s, TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE,
CPU_TEMP_BUF_NLONGS * sizeof(long));
-#if !defined(CONFIG_SOFTMMU)
- /*
- * Note that XZR cannot be encoded in the address base register slot,
- * as that actually encodes SP. Depending on the guest, we may need
- * to zero-extend the guest address via the address index register slot,
- * therefore we need to load even a zero guest base into a register.
- */
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_GUEST_BASE, guest_base);
- tcg_regset_set_reg(s->reserved_regs, TCG_REG_GUEST_BASE);
-#endif
+ if (!tcg_use_softmmu) {
+ /*
+ * Note that XZR cannot be encoded in the address base register slot,
+ * as that actually encodes SP. Depending on the guest, we may need
+ * to zero-extend the guest address via the address index register slot,
+ * therefore we need to load even a zero guest base into a register.
+ */
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_GUEST_BASE, guest_base);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_GUEST_BASE);
+ }
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
tcg_out_insn(s, 3207, BR, tcg_target_call_iarg_regs[1]);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 18/29] tcg/i386: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (16 preceding siblings ...)
2023-10-18 22:25 ` [PULL 17/29] tcg/aarch64: " Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 19/29] tcg/loongarch64: " Richard Henderson
` (10 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/i386/tcg-target.c.inc | 184 ++++++++++++++++++--------------------
1 file changed, 89 insertions(+), 95 deletions(-)
diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index 788d608150..a3c0473395 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -153,11 +153,8 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot)
# define ALL_VECTOR_REGS 0x00ff0000u
# define ALL_BYTEL_REGS 0x0000000fu
#endif
-#ifdef CONFIG_SOFTMMU
-# define SOFTMMU_RESERVE_REGS ((1 << TCG_REG_L0) | (1 << TCG_REG_L1))
-#else
-# define SOFTMMU_RESERVE_REGS 0
-#endif
+#define SOFTMMU_RESERVE_REGS \
+ (tcg_use_softmmu ? (1 << TCG_REG_L0) | (1 << TCG_REG_L1) : 0)
/* For 64-bit, we always know that CMOV is available. */
#if TCG_TARGET_REG_BITS == 64
@@ -1933,7 +1930,6 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
return true;
}
-#ifndef CONFIG_SOFTMMU
static HostAddress x86_guest_base = {
.index = -1
};
@@ -1965,7 +1961,6 @@ static inline int setup_guest_base_seg(void)
return 0;
}
#endif /* setup_guest_base_seg */
-#endif /* !SOFTMMU */
#define MIN_TLB_MASK_TABLE_OFS INT_MIN
@@ -1984,94 +1979,94 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
MemOp s_bits = opc & MO_SIZE;
unsigned a_mask;
-#ifdef CONFIG_SOFTMMU
- h->index = TCG_REG_L0;
- h->ofs = 0;
- h->seg = 0;
-#else
- *h = x86_guest_base;
-#endif
+ if (tcg_use_softmmu) {
+ h->index = TCG_REG_L0;
+ h->ofs = 0;
+ h->seg = 0;
+ } else {
+ *h = x86_guest_base;
+ }
h->base = addrlo;
h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, s_bits == MO_128);
a_mask = (1 << h->aa.align) - 1;
-#ifdef CONFIG_SOFTMMU
- int cmp_ofs = is_ld ? offsetof(CPUTLBEntry, addr_read)
- : offsetof(CPUTLBEntry, addr_write);
- TCGType ttype = TCG_TYPE_I32;
- TCGType tlbtype = TCG_TYPE_I32;
- int trexw = 0, hrexw = 0, tlbrexw = 0;
- unsigned mem_index = get_mmuidx(oi);
- unsigned s_mask = (1 << s_bits) - 1;
- int fast_ofs = tlb_mask_table_ofs(s, mem_index);
- int tlb_mask;
+ if (tcg_use_softmmu) {
+ int cmp_ofs = is_ld ? offsetof(CPUTLBEntry, addr_read)
+ : offsetof(CPUTLBEntry, addr_write);
+ TCGType ttype = TCG_TYPE_I32;
+ TCGType tlbtype = TCG_TYPE_I32;
+ int trexw = 0, hrexw = 0, tlbrexw = 0;
+ unsigned mem_index = get_mmuidx(oi);
+ unsigned s_mask = (1 << s_bits) - 1;
+ int fast_ofs = tlb_mask_table_ofs(s, mem_index);
+ int tlb_mask;
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addrlo;
- ldst->addrhi_reg = addrhi;
+ ldst = new_ldst_label(s);
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addrlo;
+ ldst->addrhi_reg = addrhi;
- if (TCG_TARGET_REG_BITS == 64) {
- ttype = s->addr_type;
- trexw = (ttype == TCG_TYPE_I32 ? 0 : P_REXW);
- if (TCG_TYPE_PTR == TCG_TYPE_I64) {
- hrexw = P_REXW;
- if (s->page_bits + s->tlb_dyn_max_bits > 32) {
- tlbtype = TCG_TYPE_I64;
- tlbrexw = P_REXW;
+ if (TCG_TARGET_REG_BITS == 64) {
+ ttype = s->addr_type;
+ trexw = (ttype == TCG_TYPE_I32 ? 0 : P_REXW);
+ if (TCG_TYPE_PTR == TCG_TYPE_I64) {
+ hrexw = P_REXW;
+ if (s->page_bits + s->tlb_dyn_max_bits > 32) {
+ tlbtype = TCG_TYPE_I64;
+ tlbrexw = P_REXW;
+ }
}
}
- }
- tcg_out_mov(s, tlbtype, TCG_REG_L0, addrlo);
- tcg_out_shifti(s, SHIFT_SHR + tlbrexw, TCG_REG_L0,
- s->page_bits - CPU_TLB_ENTRY_BITS);
+ tcg_out_mov(s, tlbtype, TCG_REG_L0, addrlo);
+ tcg_out_shifti(s, SHIFT_SHR + tlbrexw, TCG_REG_L0,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
- tcg_out_modrm_offset(s, OPC_AND_GvEv + trexw, TCG_REG_L0, TCG_AREG0,
- fast_ofs + offsetof(CPUTLBDescFast, mask));
+ tcg_out_modrm_offset(s, OPC_AND_GvEv + trexw, TCG_REG_L0, TCG_AREG0,
+ fast_ofs + offsetof(CPUTLBDescFast, mask));
- tcg_out_modrm_offset(s, OPC_ADD_GvEv + hrexw, TCG_REG_L0, TCG_AREG0,
- fast_ofs + offsetof(CPUTLBDescFast, table));
+ tcg_out_modrm_offset(s, OPC_ADD_GvEv + hrexw, TCG_REG_L0, TCG_AREG0,
+ fast_ofs + offsetof(CPUTLBDescFast, table));
- /*
- * If the required alignment is at least as large as the access, simply
- * copy the address and mask. For lesser alignments, check that we don't
- * cross pages for the complete access.
- */
- if (a_mask >= s_mask) {
- tcg_out_mov(s, ttype, TCG_REG_L1, addrlo);
- } else {
- tcg_out_modrm_offset(s, OPC_LEA + trexw, TCG_REG_L1,
- addrlo, s_mask - a_mask);
- }
- tlb_mask = s->page_mask | a_mask;
- tgen_arithi(s, ARITH_AND + trexw, TCG_REG_L1, tlb_mask, 0);
+ /*
+ * If the required alignment is at least as large as the access,
+ * simply copy the address and mask. For lesser alignments,
+ * check that we don't cross pages for the complete access.
+ */
+ if (a_mask >= s_mask) {
+ tcg_out_mov(s, ttype, TCG_REG_L1, addrlo);
+ } else {
+ tcg_out_modrm_offset(s, OPC_LEA + trexw, TCG_REG_L1,
+ addrlo, s_mask - a_mask);
+ }
+ tlb_mask = s->page_mask | a_mask;
+ tgen_arithi(s, ARITH_AND + trexw, TCG_REG_L1, tlb_mask, 0);
- /* cmp 0(TCG_REG_L0), TCG_REG_L1 */
- tcg_out_modrm_offset(s, OPC_CMP_GvEv + trexw,
- TCG_REG_L1, TCG_REG_L0, cmp_ofs);
-
- /* jne slow_path */
- tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0);
- ldst->label_ptr[0] = s->code_ptr;
- s->code_ptr += 4;
-
- if (TCG_TARGET_REG_BITS == 32 && s->addr_type == TCG_TYPE_I64) {
- /* cmp 4(TCG_REG_L0), addrhi */
- tcg_out_modrm_offset(s, OPC_CMP_GvEv, addrhi, TCG_REG_L0, cmp_ofs + 4);
+ /* cmp 0(TCG_REG_L0), TCG_REG_L1 */
+ tcg_out_modrm_offset(s, OPC_CMP_GvEv + trexw,
+ TCG_REG_L1, TCG_REG_L0, cmp_ofs);
/* jne slow_path */
tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0);
- ldst->label_ptr[1] = s->code_ptr;
+ ldst->label_ptr[0] = s->code_ptr;
s->code_ptr += 4;
- }
- /* TLB Hit. */
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_L0, TCG_REG_L0,
- offsetof(CPUTLBEntry, addend));
-#else
- if (a_mask) {
+ if (TCG_TARGET_REG_BITS == 32 && s->addr_type == TCG_TYPE_I64) {
+ /* cmp 4(TCG_REG_L0), addrhi */
+ tcg_out_modrm_offset(s, OPC_CMP_GvEv, addrhi,
+ TCG_REG_L0, cmp_ofs + 4);
+
+ /* jne slow_path */
+ tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0);
+ ldst->label_ptr[1] = s->code_ptr;
+ s->code_ptr += 4;
+ }
+
+ /* TLB Hit. */
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_L0, TCG_REG_L0,
+ offsetof(CPUTLBEntry, addend));
+ } else if (a_mask) {
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
@@ -2085,7 +2080,6 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
ldst->label_ptr[0] = s->code_ptr;
s->code_ptr += 4;
}
-#endif
return ldst;
}
@@ -4140,35 +4134,35 @@ static void tcg_target_qemu_prologue(TCGContext *s)
tcg_out_push(s, tcg_target_callee_save_regs[i]);
}
-#if TCG_TARGET_REG_BITS == 32
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_AREG0, TCG_REG_ESP,
- (ARRAY_SIZE(tcg_target_callee_save_regs) + 1) * 4);
- tcg_out_addi(s, TCG_REG_ESP, -stack_addend);
- /* jmp *tb. */
- tcg_out_modrm_offset(s, OPC_GRP5, EXT5_JMPN_Ev, TCG_REG_ESP,
- (ARRAY_SIZE(tcg_target_callee_save_regs) + 2) * 4
- + stack_addend);
-#else
-# if !defined(CONFIG_SOFTMMU)
- if (guest_base) {
+ if (!tcg_use_softmmu && guest_base) {
int seg = setup_guest_base_seg();
if (seg != 0) {
x86_guest_base.seg = seg;
} else if (guest_base == (int32_t)guest_base) {
x86_guest_base.ofs = guest_base;
} else {
+ assert(TCG_TARGET_REG_BITS == 64);
/* Choose R12 because, as a base, it requires a SIB byte. */
x86_guest_base.index = TCG_REG_R12;
tcg_out_movi(s, TCG_TYPE_PTR, x86_guest_base.index, guest_base);
tcg_regset_set_reg(s->reserved_regs, x86_guest_base.index);
}
}
-# endif
- tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
- tcg_out_addi(s, TCG_REG_ESP, -stack_addend);
- /* jmp *tb. */
- tcg_out_modrm(s, OPC_GRP5, EXT5_JMPN_Ev, tcg_target_call_iarg_regs[1]);
-#endif
+
+ if (TCG_TARGET_REG_BITS == 32) {
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_AREG0, TCG_REG_ESP,
+ (ARRAY_SIZE(tcg_target_callee_save_regs) + 1) * 4);
+ tcg_out_addi(s, TCG_REG_ESP, -stack_addend);
+ /* jmp *tb. */
+ tcg_out_modrm_offset(s, OPC_GRP5, EXT5_JMPN_Ev, TCG_REG_ESP,
+ (ARRAY_SIZE(tcg_target_callee_save_regs) + 2) * 4
+ + stack_addend);
+ } else {
+ tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
+ tcg_out_addi(s, TCG_REG_ESP, -stack_addend);
+ /* jmp *tb. */
+ tcg_out_modrm(s, OPC_GRP5, EXT5_JMPN_Ev, tcg_target_call_iarg_regs[1]);
+ }
/*
* Return path for goto_ptr. Set return value to 0, a-la exit_tb,
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 19/29] tcg/loongarch64: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (17 preceding siblings ...)
2023-10-18 22:25 ` [PULL 18/29] tcg/i386: " Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 20/29] tcg/mips: " Richard Henderson
` (9 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/loongarch64/tcg-target.c.inc | 126 +++++++++++++++----------------
1 file changed, 61 insertions(+), 65 deletions(-)
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index 801302d85d..ccf133db4b 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -165,10 +165,7 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot)
return TCG_REG_A0 + slot;
}
-#ifndef CONFIG_SOFTMMU
-#define USE_GUEST_BASE (guest_base != 0)
#define TCG_GUEST_BASE_REG TCG_REG_S1
-#endif
#define TCG_CT_CONST_ZERO 0x100
#define TCG_CT_CONST_S12 0x200
@@ -908,76 +905,77 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, false);
a_bits = h->aa.align;
-#ifdef CONFIG_SOFTMMU
- unsigned s_bits = opc & MO_SIZE;
- int mem_index = get_mmuidx(oi);
- int fast_ofs = tlb_mask_table_ofs(s, mem_index);
- int mask_ofs = fast_ofs + offsetof(CPUTLBDescFast, mask);
- int table_ofs = fast_ofs + offsetof(CPUTLBDescFast, table);
+ if (tcg_use_softmmu) {
+ unsigned s_bits = opc & MO_SIZE;
+ int mem_index = get_mmuidx(oi);
+ int fast_ofs = tlb_mask_table_ofs(s, mem_index);
+ int mask_ofs = fast_ofs + offsetof(CPUTLBDescFast, mask);
+ int table_ofs = fast_ofs + offsetof(CPUTLBDescFast, table);
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addr_reg;
-
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_AREG0, mask_ofs);
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, table_ofs);
-
- tcg_out_opc_srli_d(s, TCG_REG_TMP2, addr_reg,
- s->page_bits - CPU_TLB_ENTRY_BITS);
- tcg_out_opc_and(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP0);
- tcg_out_opc_add_d(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP1);
-
- /* Load the tlb comparator and the addend. */
- QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
- tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2,
- is_ld ? offsetof(CPUTLBEntry, addr_read)
- : offsetof(CPUTLBEntry, addr_write));
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP2,
- offsetof(CPUTLBEntry, addend));
-
- /*
- * For aligned accesses, we check the first byte and include the alignment
- * bits within the address. For unaligned access, we check that we don't
- * cross pages using the address of the last byte of the access.
- */
- if (a_bits < s_bits) {
- unsigned a_mask = (1u << a_bits) - 1;
- unsigned s_mask = (1u << s_bits) - 1;
- tcg_out_addi(s, addr_type, TCG_REG_TMP1, addr_reg, s_mask - a_mask);
- } else {
- tcg_out_mov(s, addr_type, TCG_REG_TMP1, addr_reg);
- }
- tcg_out_opc_bstrins_d(s, TCG_REG_TMP1, TCG_REG_ZERO,
- a_bits, s->page_bits - 1);
-
- /* Compare masked address with the TLB entry. */
- ldst->label_ptr[0] = s->code_ptr;
- tcg_out_opc_bne(s, TCG_REG_TMP0, TCG_REG_TMP1, 0);
-
- h->index = TCG_REG_TMP2;
-#else
- if (a_bits) {
ldst = new_ldst_label(s);
-
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addr_reg;
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_AREG0, mask_ofs);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, table_ofs);
+
+ tcg_out_opc_srli_d(s, TCG_REG_TMP2, addr_reg,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
+ tcg_out_opc_and(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP0);
+ tcg_out_opc_add_d(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP1);
+
+ /* Load the tlb comparator and the addend. */
+ QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
+ tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2,
+ is_ld ? offsetof(CPUTLBEntry, addr_read)
+ : offsetof(CPUTLBEntry, addr_write));
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP2,
+ offsetof(CPUTLBEntry, addend));
+
/*
- * Without micro-architecture details, we don't know which of
- * bstrpick or andi is faster, so use bstrpick as it's not
- * constrained by imm field width. Not to say alignments >= 2^12
- * are going to happen any time soon.
+ * For aligned accesses, we check the first byte and include the
+ * alignment bits within the address. For unaligned access, we
+ * check that we don't cross pages using the address of the last
+ * byte of the access.
*/
- tcg_out_opc_bstrpick_d(s, TCG_REG_TMP1, addr_reg, 0, a_bits - 1);
+ if (a_bits < s_bits) {
+ unsigned a_mask = (1u << a_bits) - 1;
+ unsigned s_mask = (1u << s_bits) - 1;
+ tcg_out_addi(s, addr_type, TCG_REG_TMP1, addr_reg, s_mask - a_mask);
+ } else {
+ tcg_out_mov(s, addr_type, TCG_REG_TMP1, addr_reg);
+ }
+ tcg_out_opc_bstrins_d(s, TCG_REG_TMP1, TCG_REG_ZERO,
+ a_bits, s->page_bits - 1);
+ /* Compare masked address with the TLB entry. */
ldst->label_ptr[0] = s->code_ptr;
- tcg_out_opc_bne(s, TCG_REG_TMP1, TCG_REG_ZERO, 0);
- }
+ tcg_out_opc_bne(s, TCG_REG_TMP0, TCG_REG_TMP1, 0);
- h->index = USE_GUEST_BASE ? TCG_GUEST_BASE_REG : TCG_REG_ZERO;
-#endif
+ h->index = TCG_REG_TMP2;
+ } else {
+ if (a_bits) {
+ ldst = new_ldst_label(s);
+
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addr_reg;
+
+ /*
+ * Without micro-architecture details, we don't know which of
+ * bstrpick or andi is faster, so use bstrpick as it's not
+ * constrained by imm field width. Not to say alignments >= 2^12
+ * are going to happen any time soon.
+ */
+ tcg_out_opc_bstrpick_d(s, TCG_REG_TMP1, addr_reg, 0, a_bits - 1);
+
+ ldst->label_ptr[0] = s->code_ptr;
+ tcg_out_opc_bne(s, TCG_REG_TMP1, TCG_REG_ZERO, 0);
+ }
+
+ h->index = guest_base ? TCG_GUEST_BASE_REG : TCG_REG_ZERO;
+ }
if (addr_type == TCG_TYPE_I32) {
h->base = TCG_REG_TMP0;
@@ -2272,12 +2270,10 @@ static void tcg_target_qemu_prologue(TCGContext *s)
TCG_REG_SP, SAVE_OFS + i * REG_SIZE);
}
-#if !defined(CONFIG_SOFTMMU)
- if (USE_GUEST_BASE) {
+ if (!tcg_use_softmmu && guest_base) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
}
-#endif
/* Call generated code */
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 20/29] tcg/mips: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (18 preceding siblings ...)
2023-10-18 22:25 ` [PULL 19/29] tcg/loongarch64: " Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 21/29] tcg/ppc: " Richard Henderson
` (8 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/mips/tcg-target.c.inc | 231 +++++++++++++++++++-------------------
1 file changed, 113 insertions(+), 118 deletions(-)
diff --git a/tcg/mips/tcg-target.c.inc b/tcg/mips/tcg-target.c.inc
index e2892edc6a..328984ccff 100644
--- a/tcg/mips/tcg-target.c.inc
+++ b/tcg/mips/tcg-target.c.inc
@@ -78,13 +78,11 @@ static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
#define TCG_TMP2 TCG_REG_T8
#define TCG_TMP3 TCG_REG_T7
-#ifndef CONFIG_SOFTMMU
#define TCG_GUEST_BASE_REG TCG_REG_S7
-#endif
#if TCG_TARGET_REG_BITS == 64
#define TCG_REG_TB TCG_REG_S6
#else
-#define TCG_REG_TB (qemu_build_not_reached(), TCG_REG_ZERO)
+#define TCG_REG_TB ({ qemu_build_not_reached(); TCG_REG_ZERO; })
#endif
/* check if we really need so many registers :P */
@@ -1279,130 +1277,129 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
a_bits = h->aa.align;
a_mask = (1 << a_bits) - 1;
-#ifdef CONFIG_SOFTMMU
- unsigned s_mask = (1 << s_bits) - 1;
- int mem_index = get_mmuidx(oi);
- int fast_off = tlb_mask_table_ofs(s, mem_index);
- int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
- int table_off = fast_off + offsetof(CPUTLBDescFast, table);
- int add_off = offsetof(CPUTLBEntry, addend);
- int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read)
- : offsetof(CPUTLBEntry, addr_write);
+ if (tcg_use_softmmu) {
+ unsigned s_mask = (1 << s_bits) - 1;
+ int mem_index = get_mmuidx(oi);
+ int fast_off = tlb_mask_table_ofs(s, mem_index);
+ int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
+ int table_off = fast_off + offsetof(CPUTLBDescFast, table);
+ int add_off = offsetof(CPUTLBEntry, addend);
+ int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read)
+ : offsetof(CPUTLBEntry, addr_write);
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addrlo;
- ldst->addrhi_reg = addrhi;
-
- /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP0, TCG_AREG0, mask_off);
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP1, TCG_AREG0, table_off);
-
- /* Extract the TLB index from the address into TMP3. */
- if (TCG_TARGET_REG_BITS == 32 || addr_type == TCG_TYPE_I32) {
- tcg_out_opc_sa(s, OPC_SRL, TCG_TMP3, addrlo,
- s->page_bits - CPU_TLB_ENTRY_BITS);
- } else {
- tcg_out_dsrl(s, TCG_TMP3, addrlo,
- s->page_bits - CPU_TLB_ENTRY_BITS);
- }
- tcg_out_opc_reg(s, OPC_AND, TCG_TMP3, TCG_TMP3, TCG_TMP0);
-
- /* Add the tlb_table pointer, creating the CPUTLBEntry address in TMP3. */
- tcg_out_opc_reg(s, ALIAS_PADD, TCG_TMP3, TCG_TMP3, TCG_TMP1);
-
- if (TCG_TARGET_REG_BITS == 32 || addr_type == TCG_TYPE_I32) {
- /* Load the (low half) tlb comparator. */
- tcg_out_ld(s, TCG_TYPE_I32, TCG_TMP0, TCG_TMP3,
- cmp_off + HOST_BIG_ENDIAN * 4);
- } else {
- tcg_out_ld(s, TCG_TYPE_I64, TCG_TMP0, TCG_TMP3, cmp_off);
- }
-
- if (TCG_TARGET_REG_BITS == 64 || addr_type == TCG_TYPE_I32) {
- /* Load the tlb addend for the fast path. */
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP3, TCG_TMP3, add_off);
- }
-
- /*
- * Mask the page bits, keeping the alignment bits to compare against.
- * For unaligned accesses, compare against the end of the access to
- * verify that it does not cross a page boundary.
- */
- tcg_out_movi(s, addr_type, TCG_TMP1, s->page_mask | a_mask);
- if (a_mask < s_mask) {
- if (TCG_TARGET_REG_BITS == 32 || addr_type == TCG_TYPE_I32) {
- tcg_out_opc_imm(s, OPC_ADDIU, TCG_TMP2, addrlo, s_mask - a_mask);
- } else {
- tcg_out_opc_imm(s, OPC_DADDIU, TCG_TMP2, addrlo, s_mask - a_mask);
- }
- tcg_out_opc_reg(s, OPC_AND, TCG_TMP1, TCG_TMP1, TCG_TMP2);
- } else {
- tcg_out_opc_reg(s, OPC_AND, TCG_TMP1, TCG_TMP1, addrlo);
- }
-
- /* Zero extend a 32-bit guest address for a 64-bit host. */
- if (TCG_TARGET_REG_BITS == 64 && addr_type == TCG_TYPE_I32) {
- tcg_out_ext32u(s, TCG_TMP2, addrlo);
- addrlo = TCG_TMP2;
- }
-
- ldst->label_ptr[0] = s->code_ptr;
- tcg_out_opc_br(s, OPC_BNE, TCG_TMP1, TCG_TMP0);
-
- /* Load and test the high half tlb comparator. */
- if (TCG_TARGET_REG_BITS == 32 && addr_type != TCG_TYPE_I32) {
- /* delay slot */
- tcg_out_ldst(s, OPC_LW, TCG_TMP0, TCG_TMP3, cmp_off + HI_OFF);
-
- /* Load the tlb addend for the fast path. */
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP3, TCG_TMP3, add_off);
-
- ldst->label_ptr[1] = s->code_ptr;
- tcg_out_opc_br(s, OPC_BNE, addrhi, TCG_TMP0);
- }
-
- /* delay slot */
- base = TCG_TMP3;
- tcg_out_opc_reg(s, ALIAS_PADD, base, TCG_TMP3, addrlo);
-#else
- if (a_mask && (use_mips32r6_instructions || a_bits != s_bits)) {
ldst = new_ldst_label(s);
-
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addrlo;
ldst->addrhi_reg = addrhi;
- /* We are expecting a_bits to max out at 7, much lower than ANDI. */
- tcg_debug_assert(a_bits < 16);
- tcg_out_opc_imm(s, OPC_ANDI, TCG_TMP0, addrlo, a_mask);
+ /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP0, TCG_AREG0, mask_off);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP1, TCG_AREG0, table_off);
+
+ /* Extract the TLB index from the address into TMP3. */
+ if (TCG_TARGET_REG_BITS == 32 || addr_type == TCG_TYPE_I32) {
+ tcg_out_opc_sa(s, OPC_SRL, TCG_TMP3, addrlo,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
+ } else {
+ tcg_out_dsrl(s, TCG_TMP3, addrlo,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
+ }
+ tcg_out_opc_reg(s, OPC_AND, TCG_TMP3, TCG_TMP3, TCG_TMP0);
+
+ /* Add the tlb_table pointer, creating the CPUTLBEntry address. */
+ tcg_out_opc_reg(s, ALIAS_PADD, TCG_TMP3, TCG_TMP3, TCG_TMP1);
+
+ if (TCG_TARGET_REG_BITS == 32 || addr_type == TCG_TYPE_I32) {
+ /* Load the (low half) tlb comparator. */
+ tcg_out_ld(s, TCG_TYPE_I32, TCG_TMP0, TCG_TMP3,
+ cmp_off + HOST_BIG_ENDIAN * 4);
+ } else {
+ tcg_out_ld(s, TCG_TYPE_I64, TCG_TMP0, TCG_TMP3, cmp_off);
+ }
+
+ if (TCG_TARGET_REG_BITS == 64 || addr_type == TCG_TYPE_I32) {
+ /* Load the tlb addend for the fast path. */
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP3, TCG_TMP3, add_off);
+ }
+
+ /*
+ * Mask the page bits, keeping the alignment bits to compare against.
+ * For unaligned accesses, compare against the end of the access to
+ * verify that it does not cross a page boundary.
+ */
+ tcg_out_movi(s, addr_type, TCG_TMP1, s->page_mask | a_mask);
+ if (a_mask < s_mask) {
+ tcg_out_opc_imm(s, (TCG_TARGET_REG_BITS == 32
+ || addr_type == TCG_TYPE_I32
+ ? OPC_ADDIU : OPC_DADDIU),
+ TCG_TMP2, addrlo, s_mask - a_mask);
+ tcg_out_opc_reg(s, OPC_AND, TCG_TMP1, TCG_TMP1, TCG_TMP2);
+ } else {
+ tcg_out_opc_reg(s, OPC_AND, TCG_TMP1, TCG_TMP1, addrlo);
+ }
+
+ /* Zero extend a 32-bit guest address for a 64-bit host. */
+ if (TCG_TARGET_REG_BITS == 64 && addr_type == TCG_TYPE_I32) {
+ tcg_out_ext32u(s, TCG_TMP2, addrlo);
+ addrlo = TCG_TMP2;
+ }
ldst->label_ptr[0] = s->code_ptr;
- if (use_mips32r6_instructions) {
- tcg_out_opc_br(s, OPC_BNEZALC_R6, TCG_REG_ZERO, TCG_TMP0);
- } else {
- tcg_out_opc_br(s, OPC_BNEL, TCG_TMP0, TCG_REG_ZERO);
- tcg_out_nop(s);
- }
- }
+ tcg_out_opc_br(s, OPC_BNE, TCG_TMP1, TCG_TMP0);
- base = addrlo;
- if (TCG_TARGET_REG_BITS == 64 && addr_type == TCG_TYPE_I32) {
- tcg_out_ext32u(s, TCG_REG_A0, base);
- base = TCG_REG_A0;
- }
- if (guest_base) {
- if (guest_base == (int16_t)guest_base) {
- tcg_out_opc_imm(s, ALIAS_PADDI, TCG_REG_A0, base, guest_base);
- } else {
- tcg_out_opc_reg(s, ALIAS_PADD, TCG_REG_A0, base,
- TCG_GUEST_BASE_REG);
+ /* Load and test the high half tlb comparator. */
+ if (TCG_TARGET_REG_BITS == 32 && addr_type != TCG_TYPE_I32) {
+ /* delay slot */
+ tcg_out_ldst(s, OPC_LW, TCG_TMP0, TCG_TMP3, cmp_off + HI_OFF);
+
+ /* Load the tlb addend for the fast path. */
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_TMP3, TCG_TMP3, add_off);
+
+ ldst->label_ptr[1] = s->code_ptr;
+ tcg_out_opc_br(s, OPC_BNE, addrhi, TCG_TMP0);
+ }
+
+ /* delay slot */
+ base = TCG_TMP3;
+ tcg_out_opc_reg(s, ALIAS_PADD, base, TCG_TMP3, addrlo);
+ } else {
+ if (a_mask && (use_mips32r6_instructions || a_bits != s_bits)) {
+ ldst = new_ldst_label(s);
+
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addrlo;
+ ldst->addrhi_reg = addrhi;
+
+ /* We are expecting a_bits to max out at 7, much lower than ANDI. */
+ tcg_debug_assert(a_bits < 16);
+ tcg_out_opc_imm(s, OPC_ANDI, TCG_TMP0, addrlo, a_mask);
+
+ ldst->label_ptr[0] = s->code_ptr;
+ if (use_mips32r6_instructions) {
+ tcg_out_opc_br(s, OPC_BNEZALC_R6, TCG_REG_ZERO, TCG_TMP0);
+ } else {
+ tcg_out_opc_br(s, OPC_BNEL, TCG_TMP0, TCG_REG_ZERO);
+ tcg_out_nop(s);
+ }
+ }
+
+ base = addrlo;
+ if (TCG_TARGET_REG_BITS == 64 && addr_type == TCG_TYPE_I32) {
+ tcg_out_ext32u(s, TCG_REG_A0, base);
+ base = TCG_REG_A0;
+ }
+ if (guest_base) {
+ if (guest_base == (int16_t)guest_base) {
+ tcg_out_opc_imm(s, ALIAS_PADDI, TCG_REG_A0, base, guest_base);
+ } else {
+ tcg_out_opc_reg(s, ALIAS_PADD, TCG_REG_A0, base,
+ TCG_GUEST_BASE_REG);
+ }
+ base = TCG_REG_A0;
}
- base = TCG_REG_A0;
}
-#endif
h->base = base;
return ldst;
@@ -2465,8 +2462,7 @@ static void tcg_target_qemu_prologue(TCGContext *s)
TCG_REG_SP, SAVE_OFS + i * REG_SIZE);
}
-#ifndef CONFIG_SOFTMMU
- if (guest_base != (int16_t)guest_base) {
+ if (!tcg_use_softmmu && guest_base != (int16_t)guest_base) {
/*
* The function call abi for n32 and n64 will have loaded $25 (t9)
* with the address of the prologue, so we can use that instead
@@ -2479,7 +2475,6 @@ static void tcg_target_qemu_prologue(TCGContext *s)
TCG_TARGET_REG_BITS == 64 ? TCG_REG_T9 : 0);
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
}
-#endif
if (TCG_TARGET_REG_BITS == 64) {
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_TB, tcg_target_call_iarg_regs[1]);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 21/29] tcg/ppc: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (19 preceding siblings ...)
2023-10-18 22:25 ` [PULL 20/29] tcg/mips: " Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 22/29] tcg/riscv: Do not reserve TCG_GUEST_BASE_REG for guest_base zero Richard Henderson
` (7 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Fix TCG_GUEST_BASE_REG to use 'TCG_REG_R30' instead of '30'.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 284 ++++++++++++++++++++-------------------
1 file changed, 143 insertions(+), 141 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index c31da4da9d..856c3b18f5 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -107,9 +107,7 @@
#define have_isel (cpuinfo & CPUINFO_ISEL)
-#ifndef CONFIG_SOFTMMU
-#define TCG_GUEST_BASE_REG 30
-#endif
+#define TCG_GUEST_BASE_REG TCG_REG_R30
#ifdef CONFIG_DEBUG_TCG
static const char tcg_target_reg_names[TCG_TARGET_NB_REGS][4] = {
@@ -2317,151 +2315,157 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
s_bits == MO_128);
a_bits = h->aa.align;
-#ifdef CONFIG_SOFTMMU
- int mem_index = get_mmuidx(oi);
- int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read)
- : offsetof(CPUTLBEntry, addr_write);
- int fast_off = tlb_mask_table_ofs(s, mem_index);
- int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
- int table_off = fast_off + offsetof(CPUTLBDescFast, table);
+ if (tcg_use_softmmu) {
+ int mem_index = get_mmuidx(oi);
+ int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read)
+ : offsetof(CPUTLBEntry, addr_write);
+ int fast_off = tlb_mask_table_ofs(s, mem_index);
+ int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
+ int table_off = fast_off + offsetof(CPUTLBDescFast, table);
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addrlo;
- ldst->addrhi_reg = addrhi;
-
- /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, mask_off);
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_AREG0, table_off);
-
- /* Extract the page index, shifted into place for tlb index. */
- if (TCG_TARGET_REG_BITS == 32) {
- tcg_out_shri32(s, TCG_REG_R0, addrlo,
- s->page_bits - CPU_TLB_ENTRY_BITS);
- } else {
- tcg_out_shri64(s, TCG_REG_R0, addrlo,
- s->page_bits - CPU_TLB_ENTRY_BITS);
- }
- tcg_out32(s, AND | SAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_R0));
-
- /*
- * Load the (low part) TLB comparator into TMP2.
- * For 64-bit host, always load the entire 64-bit slot for simplicity.
- * We will ignore the high bits with tcg_out_cmp(..., addr_type).
- */
- if (TCG_TARGET_REG_BITS == 64) {
- if (cmp_off == 0) {
- tcg_out32(s, LDUX | TAB(TCG_REG_TMP2, TCG_REG_TMP1, TCG_REG_TMP2));
- } else {
- tcg_out32(s, ADD | TAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP2));
- tcg_out_ld(s, TCG_TYPE_I64, TCG_REG_TMP2, TCG_REG_TMP1, cmp_off);
- }
- } else if (cmp_off == 0 && !HOST_BIG_ENDIAN) {
- tcg_out32(s, LWZUX | TAB(TCG_REG_TMP2, TCG_REG_TMP1, TCG_REG_TMP2));
- } else {
- tcg_out32(s, ADD | TAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP2));
- tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP2, TCG_REG_TMP1,
- cmp_off + 4 * HOST_BIG_ENDIAN);
- }
-
- /*
- * Load the TLB addend for use on the fast path.
- * Do this asap to minimize any load use delay.
- */
- if (TCG_TARGET_REG_BITS == 64 || addr_type == TCG_TYPE_I32) {
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1,
- offsetof(CPUTLBEntry, addend));
- }
-
- /* Clear the non-page, non-alignment bits from the address in R0. */
- if (TCG_TARGET_REG_BITS == 32) {
- /*
- * We don't support unaligned accesses on 32-bits.
- * Preserve the bottom bits and thus trigger a comparison
- * failure on unaligned accesses.
- */
- if (a_bits < s_bits) {
- a_bits = s_bits;
- }
- tcg_out_rlw(s, RLWINM, TCG_REG_R0, addrlo, 0,
- (32 - a_bits) & 31, 31 - s->page_bits);
- } else {
- TCGReg t = addrlo;
-
- /*
- * If the access is unaligned, we need to make sure we fail if we
- * cross a page boundary. The trick is to add the access size-1
- * to the address before masking the low bits. That will make the
- * address overflow to the next page if we cross a page boundary,
- * which will then force a mismatch of the TLB compare.
- */
- if (a_bits < s_bits) {
- unsigned a_mask = (1 << a_bits) - 1;
- unsigned s_mask = (1 << s_bits) - 1;
- tcg_out32(s, ADDI | TAI(TCG_REG_R0, t, s_mask - a_mask));
- t = TCG_REG_R0;
- }
-
- /* Mask the address for the requested alignment. */
- if (addr_type == TCG_TYPE_I32) {
- tcg_out_rlw(s, RLWINM, TCG_REG_R0, t, 0,
- (32 - a_bits) & 31, 31 - s->page_bits);
- } else if (a_bits == 0) {
- tcg_out_rld(s, RLDICR, TCG_REG_R0, t, 0, 63 - s->page_bits);
- } else {
- tcg_out_rld(s, RLDICL, TCG_REG_R0, t,
- 64 - s->page_bits, s->page_bits - a_bits);
- tcg_out_rld(s, RLDICL, TCG_REG_R0, TCG_REG_R0, s->page_bits, 0);
- }
- }
-
- if (TCG_TARGET_REG_BITS == 32 && addr_type != TCG_TYPE_I32) {
- /* Low part comparison into cr7. */
- tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2,
- 0, 7, TCG_TYPE_I32);
-
- /* Load the high part TLB comparator into TMP2. */
- tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP2, TCG_REG_TMP1,
- cmp_off + 4 * !HOST_BIG_ENDIAN);
-
- /* Load addend, deferred for this case. */
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1,
- offsetof(CPUTLBEntry, addend));
-
- /* High part comparison into cr6. */
- tcg_out_cmp(s, TCG_COND_EQ, addrhi, TCG_REG_TMP2, 0, 6, TCG_TYPE_I32);
-
- /* Combine comparisons into cr7. */
- tcg_out32(s, CRAND | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
- } else {
- /* Full comparison into cr7. */
- tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2, 0, 7, addr_type);
- }
-
- /* Load a pointer into the current opcode w/conditional branch-link. */
- ldst->label_ptr[0] = s->code_ptr;
- tcg_out32(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
-
- h->base = TCG_REG_TMP1;
-#else
- if (a_bits) {
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addrlo;
ldst->addrhi_reg = addrhi;
- /* We are expecting a_bits to max out at 7, much lower than ANDI. */
- tcg_debug_assert(a_bits < 16);
- tcg_out32(s, ANDI | SAI(addrlo, TCG_REG_R0, (1 << a_bits) - 1));
+ /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, mask_off);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_AREG0, table_off);
+ /* Extract the page index, shifted into place for tlb index. */
+ if (TCG_TARGET_REG_BITS == 32) {
+ tcg_out_shri32(s, TCG_REG_R0, addrlo,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
+ } else {
+ tcg_out_shri64(s, TCG_REG_R0, addrlo,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
+ }
+ tcg_out32(s, AND | SAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_R0));
+
+ /*
+ * Load the (low part) TLB comparator into TMP2.
+ * For 64-bit host, always load the entire 64-bit slot for simplicity.
+ * We will ignore the high bits with tcg_out_cmp(..., addr_type).
+ */
+ if (TCG_TARGET_REG_BITS == 64) {
+ if (cmp_off == 0) {
+ tcg_out32(s, LDUX | TAB(TCG_REG_TMP2,
+ TCG_REG_TMP1, TCG_REG_TMP2));
+ } else {
+ tcg_out32(s, ADD | TAB(TCG_REG_TMP1,
+ TCG_REG_TMP1, TCG_REG_TMP2));
+ tcg_out_ld(s, TCG_TYPE_I64, TCG_REG_TMP2,
+ TCG_REG_TMP1, cmp_off);
+ }
+ } else if (cmp_off == 0 && !HOST_BIG_ENDIAN) {
+ tcg_out32(s, LWZUX | TAB(TCG_REG_TMP2,
+ TCG_REG_TMP1, TCG_REG_TMP2));
+ } else {
+ tcg_out32(s, ADD | TAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP2));
+ tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP2, TCG_REG_TMP1,
+ cmp_off + 4 * HOST_BIG_ENDIAN);
+ }
+
+ /*
+ * Load the TLB addend for use on the fast path.
+ * Do this asap to minimize any load use delay.
+ */
+ if (TCG_TARGET_REG_BITS == 64 || addr_type == TCG_TYPE_I32) {
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1,
+ offsetof(CPUTLBEntry, addend));
+ }
+
+ /* Clear the non-page, non-alignment bits from the address in R0. */
+ if (TCG_TARGET_REG_BITS == 32) {
+ /*
+ * We don't support unaligned accesses on 32-bits.
+ * Preserve the bottom bits and thus trigger a comparison
+ * failure on unaligned accesses.
+ */
+ if (a_bits < s_bits) {
+ a_bits = s_bits;
+ }
+ tcg_out_rlw(s, RLWINM, TCG_REG_R0, addrlo, 0,
+ (32 - a_bits) & 31, 31 - s->page_bits);
+ } else {
+ TCGReg t = addrlo;
+
+ /*
+ * If the access is unaligned, we need to make sure we fail if we
+ * cross a page boundary. The trick is to add the access size-1
+ * to the address before masking the low bits. That will make the
+ * address overflow to the next page if we cross a page boundary,
+ * which will then force a mismatch of the TLB compare.
+ */
+ if (a_bits < s_bits) {
+ unsigned a_mask = (1 << a_bits) - 1;
+ unsigned s_mask = (1 << s_bits) - 1;
+ tcg_out32(s, ADDI | TAI(TCG_REG_R0, t, s_mask - a_mask));
+ t = TCG_REG_R0;
+ }
+
+ /* Mask the address for the requested alignment. */
+ if (addr_type == TCG_TYPE_I32) {
+ tcg_out_rlw(s, RLWINM, TCG_REG_R0, t, 0,
+ (32 - a_bits) & 31, 31 - s->page_bits);
+ } else if (a_bits == 0) {
+ tcg_out_rld(s, RLDICR, TCG_REG_R0, t, 0, 63 - s->page_bits);
+ } else {
+ tcg_out_rld(s, RLDICL, TCG_REG_R0, t,
+ 64 - s->page_bits, s->page_bits - a_bits);
+ tcg_out_rld(s, RLDICL, TCG_REG_R0, TCG_REG_R0, s->page_bits, 0);
+ }
+ }
+
+ if (TCG_TARGET_REG_BITS == 32 && addr_type != TCG_TYPE_I32) {
+ /* Low part comparison into cr7. */
+ tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2,
+ 0, 7, TCG_TYPE_I32);
+
+ /* Load the high part TLB comparator into TMP2. */
+ tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP2, TCG_REG_TMP1,
+ cmp_off + 4 * !HOST_BIG_ENDIAN);
+
+ /* Load addend, deferred for this case. */
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1,
+ offsetof(CPUTLBEntry, addend));
+
+ /* High part comparison into cr6. */
+ tcg_out_cmp(s, TCG_COND_EQ, addrhi, TCG_REG_TMP2,
+ 0, 6, TCG_TYPE_I32);
+
+ /* Combine comparisons into cr7. */
+ tcg_out32(s, CRAND | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
+ } else {
+ /* Full comparison into cr7. */
+ tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2,
+ 0, 7, addr_type);
+ }
+
+ /* Load a pointer into the current opcode w/conditional branch-link. */
ldst->label_ptr[0] = s->code_ptr;
- tcg_out32(s, BC | BI(0, CR_EQ) | BO_COND_FALSE | LK);
- }
+ tcg_out32(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
- h->base = guest_base ? TCG_GUEST_BASE_REG : 0;
-#endif
+ h->base = TCG_REG_TMP1;
+ } else {
+ if (a_bits) {
+ ldst = new_ldst_label(s);
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addrlo;
+ ldst->addrhi_reg = addrhi;
+
+ /* We are expecting a_bits to max out at 7, much lower than ANDI. */
+ tcg_debug_assert(a_bits < 16);
+ tcg_out32(s, ANDI | SAI(addrlo, TCG_REG_R0, (1 << a_bits) - 1));
+
+ ldst->label_ptr[0] = s->code_ptr;
+ tcg_out32(s, BC | BI(0, CR_EQ) | BO_COND_FALSE | LK);
+ }
+
+ h->base = guest_base ? TCG_GUEST_BASE_REG : 0;
+ }
if (TCG_TARGET_REG_BITS == 64 && addr_type == TCG_TYPE_I32) {
/* Zero-extend the guest address for use in the host address. */
@@ -2695,12 +2699,10 @@ static void tcg_target_qemu_prologue(TCGContext *s)
}
tcg_out_st(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_R1, FRAME_SIZE+LR_OFFSET);
-#ifndef CONFIG_SOFTMMU
- if (guest_base) {
+ if (!tcg_use_softmmu && guest_base) {
tcg_out_movi_int(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base, true);
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
}
-#endif
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
tcg_out32(s, MTSPR | RS(tcg_target_call_iarg_regs[1]) | CTR);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 22/29] tcg/riscv: Do not reserve TCG_GUEST_BASE_REG for guest_base zero
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (20 preceding siblings ...)
2023-10-18 22:25 ` [PULL 21/29] tcg/ppc: " Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 23/29] tcg/riscv: Use tcg_use_softmmu Richard Henderson
` (6 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Fixes: 92c041c59b ("tcg/riscv: Add the prologue generation and register the JIT")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/riscv/tcg-target.c.inc | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index d6dbcaf3cb..dc71f829d1 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -2076,8 +2076,10 @@ static void tcg_target_qemu_prologue(TCGContext *s)
}
#if !defined(CONFIG_SOFTMMU)
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
- tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
+ if (guest_base) {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
+ tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
+ }
#endif
/* Call generated code */
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 23/29] tcg/riscv: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (21 preceding siblings ...)
2023-10-18 22:25 ` [PULL 22/29] tcg/riscv: Do not reserve TCG_GUEST_BASE_REG for guest_base zero Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 24/29] tcg/s390x: " Richard Henderson
` (5 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/riscv/tcg-target.c.inc | 185 +++++++++++++++++++------------------
1 file changed, 94 insertions(+), 91 deletions(-)
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index dc71f829d1..34e10e77d9 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -1245,105 +1245,110 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, TCGReg *pbase,
aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, false);
a_mask = (1u << aa.align) - 1;
-#ifdef CONFIG_SOFTMMU
- unsigned s_bits = opc & MO_SIZE;
- unsigned s_mask = (1u << s_bits) - 1;
- int mem_index = get_mmuidx(oi);
- int fast_ofs = tlb_mask_table_ofs(s, mem_index);
- int mask_ofs = fast_ofs + offsetof(CPUTLBDescFast, mask);
- int table_ofs = fast_ofs + offsetof(CPUTLBDescFast, table);
- int compare_mask;
- TCGReg addr_adj;
+ if (tcg_use_softmmu) {
+ unsigned s_bits = opc & MO_SIZE;
+ unsigned s_mask = (1u << s_bits) - 1;
+ int mem_index = get_mmuidx(oi);
+ int fast_ofs = tlb_mask_table_ofs(s, mem_index);
+ int mask_ofs = fast_ofs + offsetof(CPUTLBDescFast, mask);
+ int table_ofs = fast_ofs + offsetof(CPUTLBDescFast, table);
+ int compare_mask;
+ TCGReg addr_adj;
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addr_reg;
-
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_AREG0, mask_ofs);
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, table_ofs);
-
- tcg_out_opc_imm(s, OPC_SRLI, TCG_REG_TMP2, addr_reg,
- s->page_bits - CPU_TLB_ENTRY_BITS);
- tcg_out_opc_reg(s, OPC_AND, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP0);
- tcg_out_opc_reg(s, OPC_ADD, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP1);
-
- /*
- * For aligned accesses, we check the first byte and include the alignment
- * bits within the address. For unaligned access, we check that we don't
- * cross pages using the address of the last byte of the access.
- */
- addr_adj = addr_reg;
- if (a_mask < s_mask) {
- addr_adj = TCG_REG_TMP0;
- tcg_out_opc_imm(s, addr_type == TCG_TYPE_I32 ? OPC_ADDIW : OPC_ADDI,
- addr_adj, addr_reg, s_mask - a_mask);
- }
- compare_mask = s->page_mask | a_mask;
- if (compare_mask == sextreg(compare_mask, 0, 12)) {
- tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_TMP1, addr_adj, compare_mask);
- } else {
- tcg_out_movi(s, addr_type, TCG_REG_TMP1, compare_mask);
- tcg_out_opc_reg(s, OPC_AND, TCG_REG_TMP1, TCG_REG_TMP1, addr_adj);
- }
-
- /* Load the tlb comparator and the addend. */
- QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
- tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2,
- is_ld ? offsetof(CPUTLBEntry, addr_read)
- : offsetof(CPUTLBEntry, addr_write));
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP2,
- offsetof(CPUTLBEntry, addend));
-
- /* Compare masked address with the TLB entry. */
- ldst->label_ptr[0] = s->code_ptr;
- tcg_out_opc_branch(s, OPC_BNE, TCG_REG_TMP0, TCG_REG_TMP1, 0);
-
- /* TLB Hit - translate address using addend. */
- if (addr_type != TCG_TYPE_I32) {
- tcg_out_opc_reg(s, OPC_ADD, TCG_REG_TMP0, addr_reg, TCG_REG_TMP2);
- } else if (have_zba) {
- tcg_out_opc_reg(s, OPC_ADD_UW, TCG_REG_TMP0, addr_reg, TCG_REG_TMP2);
- } else {
- tcg_out_ext32u(s, TCG_REG_TMP0, addr_reg);
- tcg_out_opc_reg(s, OPC_ADD, TCG_REG_TMP0, TCG_REG_TMP0, TCG_REG_TMP2);
- }
- *pbase = TCG_REG_TMP0;
-#else
- TCGReg base;
-
- if (a_mask) {
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addr_reg;
- /* We are expecting alignment max 7, so we can always use andi. */
- tcg_debug_assert(a_mask == sextreg(a_mask, 0, 12));
- tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_TMP1, addr_reg, a_mask);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_AREG0, mask_ofs);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, table_ofs);
- ldst->label_ptr[0] = s->code_ptr;
- tcg_out_opc_branch(s, OPC_BNE, TCG_REG_TMP1, TCG_REG_ZERO, 0);
- }
+ tcg_out_opc_imm(s, OPC_SRLI, TCG_REG_TMP2, addr_reg,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
+ tcg_out_opc_reg(s, OPC_AND, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP0);
+ tcg_out_opc_reg(s, OPC_ADD, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP1);
- if (guest_base != 0) {
- base = TCG_REG_TMP0;
- if (addr_type != TCG_TYPE_I32) {
- tcg_out_opc_reg(s, OPC_ADD, base, addr_reg, TCG_GUEST_BASE_REG);
- } else if (have_zba) {
- tcg_out_opc_reg(s, OPC_ADD_UW, base, addr_reg, TCG_GUEST_BASE_REG);
- } else {
- tcg_out_ext32u(s, base, addr_reg);
- tcg_out_opc_reg(s, OPC_ADD, base, base, TCG_GUEST_BASE_REG);
+ /*
+ * For aligned accesses, we check the first byte and include the
+ * alignment bits within the address. For unaligned access, we
+ * check that we don't cross pages using the address of the last
+ * byte of the access.
+ */
+ addr_adj = addr_reg;
+ if (a_mask < s_mask) {
+ addr_adj = TCG_REG_TMP0;
+ tcg_out_opc_imm(s, addr_type == TCG_TYPE_I32 ? OPC_ADDIW : OPC_ADDI,
+ addr_adj, addr_reg, s_mask - a_mask);
}
- } else if (addr_type != TCG_TYPE_I32) {
- base = addr_reg;
+ compare_mask = s->page_mask | a_mask;
+ if (compare_mask == sextreg(compare_mask, 0, 12)) {
+ tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_TMP1, addr_adj, compare_mask);
+ } else {
+ tcg_out_movi(s, addr_type, TCG_REG_TMP1, compare_mask);
+ tcg_out_opc_reg(s, OPC_AND, TCG_REG_TMP1, TCG_REG_TMP1, addr_adj);
+ }
+
+ /* Load the tlb comparator and the addend. */
+ QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN);
+ tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2,
+ is_ld ? offsetof(CPUTLBEntry, addr_read)
+ : offsetof(CPUTLBEntry, addr_write));
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP2,
+ offsetof(CPUTLBEntry, addend));
+
+ /* Compare masked address with the TLB entry. */
+ ldst->label_ptr[0] = s->code_ptr;
+ tcg_out_opc_branch(s, OPC_BNE, TCG_REG_TMP0, TCG_REG_TMP1, 0);
+
+ /* TLB Hit - translate address using addend. */
+ if (addr_type != TCG_TYPE_I32) {
+ tcg_out_opc_reg(s, OPC_ADD, TCG_REG_TMP0, addr_reg, TCG_REG_TMP2);
+ } else if (have_zba) {
+ tcg_out_opc_reg(s, OPC_ADD_UW, TCG_REG_TMP0,
+ addr_reg, TCG_REG_TMP2);
+ } else {
+ tcg_out_ext32u(s, TCG_REG_TMP0, addr_reg);
+ tcg_out_opc_reg(s, OPC_ADD, TCG_REG_TMP0,
+ TCG_REG_TMP0, TCG_REG_TMP2);
+ }
+ *pbase = TCG_REG_TMP0;
} else {
- base = TCG_REG_TMP0;
- tcg_out_ext32u(s, base, addr_reg);
+ TCGReg base;
+
+ if (a_mask) {
+ ldst = new_ldst_label(s);
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addr_reg;
+
+ /* We are expecting alignment max 7, so we can always use andi. */
+ tcg_debug_assert(a_mask == sextreg(a_mask, 0, 12));
+ tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_TMP1, addr_reg, a_mask);
+
+ ldst->label_ptr[0] = s->code_ptr;
+ tcg_out_opc_branch(s, OPC_BNE, TCG_REG_TMP1, TCG_REG_ZERO, 0);
+ }
+
+ if (guest_base != 0) {
+ base = TCG_REG_TMP0;
+ if (addr_type != TCG_TYPE_I32) {
+ tcg_out_opc_reg(s, OPC_ADD, base, addr_reg,
+ TCG_GUEST_BASE_REG);
+ } else if (have_zba) {
+ tcg_out_opc_reg(s, OPC_ADD_UW, base, addr_reg,
+ TCG_GUEST_BASE_REG);
+ } else {
+ tcg_out_ext32u(s, base, addr_reg);
+ tcg_out_opc_reg(s, OPC_ADD, base, base, TCG_GUEST_BASE_REG);
+ }
+ } else if (addr_type != TCG_TYPE_I32) {
+ base = addr_reg;
+ } else {
+ base = TCG_REG_TMP0;
+ tcg_out_ext32u(s, base, addr_reg);
+ }
+ *pbase = base;
}
- *pbase = base;
-#endif
return ldst;
}
@@ -2075,12 +2080,10 @@ static void tcg_target_qemu_prologue(TCGContext *s)
TCG_REG_SP, SAVE_OFS + i * REG_SIZE);
}
-#if !defined(CONFIG_SOFTMMU)
- if (guest_base) {
+ if (!tcg_use_softmmu && guest_base) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
}
-#endif
/* Call generated code */
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 24/29] tcg/s390x: Use tcg_use_softmmu
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (22 preceding siblings ...)
2023-10-18 22:25 ` [PULL 23/29] tcg/riscv: Use tcg_use_softmmu Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 25/29] tcg: drop unused tcg_temp_free define Richard Henderson
` (4 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Philippe Mathieu-Daudé
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/s390x/tcg-target.c.inc | 161 ++++++++++++++++++-------------------
1 file changed, 79 insertions(+), 82 deletions(-)
diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc
index 4ef9ac3d5b..fbee43d3b0 100644
--- a/tcg/s390x/tcg-target.c.inc
+++ b/tcg/s390x/tcg-target.c.inc
@@ -46,9 +46,7 @@
/* A scratch register that may be be used throughout the backend. */
#define TCG_TMP0 TCG_REG_R1
-#ifndef CONFIG_SOFTMMU
#define TCG_GUEST_BASE_REG TCG_REG_R13
-#endif
/* All of the following instructions are prefixed with their instruction
format, and are defined as 8- or 16-bit quantities, even when the two
@@ -1768,94 +1766,95 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, s_bits == MO_128);
a_mask = (1 << h->aa.align) - 1;
-#ifdef CONFIG_SOFTMMU
- unsigned s_mask = (1 << s_bits) - 1;
- int mem_index = get_mmuidx(oi);
- int fast_off = tlb_mask_table_ofs(s, mem_index);
- int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
- int table_off = fast_off + offsetof(CPUTLBDescFast, table);
- int ofs, a_off;
- uint64_t tlb_mask;
+ if (tcg_use_softmmu) {
+ unsigned s_mask = (1 << s_bits) - 1;
+ int mem_index = get_mmuidx(oi);
+ int fast_off = tlb_mask_table_ofs(s, mem_index);
+ int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
+ int table_off = fast_off + offsetof(CPUTLBDescFast, table);
+ int ofs, a_off;
+ uint64_t tlb_mask;
- ldst = new_ldst_label(s);
- ldst->is_ld = is_ld;
- ldst->oi = oi;
- ldst->addrlo_reg = addr_reg;
-
- tcg_out_sh64(s, RSY_SRLG, TCG_TMP0, addr_reg, TCG_REG_NONE,
- s->page_bits - CPU_TLB_ENTRY_BITS);
-
- tcg_out_insn(s, RXY, NG, TCG_TMP0, TCG_AREG0, TCG_REG_NONE, mask_off);
- tcg_out_insn(s, RXY, AG, TCG_TMP0, TCG_AREG0, TCG_REG_NONE, table_off);
-
- /*
- * For aligned accesses, we check the first byte and include the alignment
- * bits within the address. For unaligned access, we check that we don't
- * cross pages using the address of the last byte of the access.
- */
- a_off = (a_mask >= s_mask ? 0 : s_mask - a_mask);
- tlb_mask = (uint64_t)s->page_mask | a_mask;
- if (a_off == 0) {
- tgen_andi_risbg(s, TCG_REG_R0, addr_reg, tlb_mask);
- } else {
- tcg_out_insn(s, RX, LA, TCG_REG_R0, addr_reg, TCG_REG_NONE, a_off);
- tgen_andi(s, addr_type, TCG_REG_R0, tlb_mask);
- }
-
- if (is_ld) {
- ofs = offsetof(CPUTLBEntry, addr_read);
- } else {
- ofs = offsetof(CPUTLBEntry, addr_write);
- }
- if (addr_type == TCG_TYPE_I32) {
- ofs += HOST_BIG_ENDIAN * 4;
- tcg_out_insn(s, RX, C, TCG_REG_R0, TCG_TMP0, TCG_REG_NONE, ofs);
- } else {
- tcg_out_insn(s, RXY, CG, TCG_REG_R0, TCG_TMP0, TCG_REG_NONE, ofs);
- }
-
- tcg_out16(s, RI_BRC | (S390_CC_NE << 4));
- ldst->label_ptr[0] = s->code_ptr++;
-
- h->index = TCG_TMP0;
- tcg_out_insn(s, RXY, LG, h->index, TCG_TMP0, TCG_REG_NONE,
- offsetof(CPUTLBEntry, addend));
-
- if (addr_type == TCG_TYPE_I32) {
- tcg_out_insn(s, RRE, ALGFR, h->index, addr_reg);
- h->base = TCG_REG_NONE;
- } else {
- h->base = addr_reg;
- }
- h->disp = 0;
-#else
- if (a_mask) {
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addr_reg;
- /* We are expecting a_bits to max out at 7, much lower than TMLL. */
- tcg_debug_assert(a_mask <= 0xffff);
- tcg_out_insn(s, RI, TMLL, addr_reg, a_mask);
+ tcg_out_sh64(s, RSY_SRLG, TCG_TMP0, addr_reg, TCG_REG_NONE,
+ s->page_bits - CPU_TLB_ENTRY_BITS);
- tcg_out16(s, RI_BRC | (7 << 4)); /* CC in {1,2,3} */
+ tcg_out_insn(s, RXY, NG, TCG_TMP0, TCG_AREG0, TCG_REG_NONE, mask_off);
+ tcg_out_insn(s, RXY, AG, TCG_TMP0, TCG_AREG0, TCG_REG_NONE, table_off);
+
+ /*
+ * For aligned accesses, we check the first byte and include the
+ * alignment bits within the address. For unaligned access, we
+ * check that we don't cross pages using the address of the last
+ * byte of the access.
+ */
+ a_off = (a_mask >= s_mask ? 0 : s_mask - a_mask);
+ tlb_mask = (uint64_t)s->page_mask | a_mask;
+ if (a_off == 0) {
+ tgen_andi_risbg(s, TCG_REG_R0, addr_reg, tlb_mask);
+ } else {
+ tcg_out_insn(s, RX, LA, TCG_REG_R0, addr_reg, TCG_REG_NONE, a_off);
+ tgen_andi(s, addr_type, TCG_REG_R0, tlb_mask);
+ }
+
+ if (is_ld) {
+ ofs = offsetof(CPUTLBEntry, addr_read);
+ } else {
+ ofs = offsetof(CPUTLBEntry, addr_write);
+ }
+ if (addr_type == TCG_TYPE_I32) {
+ ofs += HOST_BIG_ENDIAN * 4;
+ tcg_out_insn(s, RX, C, TCG_REG_R0, TCG_TMP0, TCG_REG_NONE, ofs);
+ } else {
+ tcg_out_insn(s, RXY, CG, TCG_REG_R0, TCG_TMP0, TCG_REG_NONE, ofs);
+ }
+
+ tcg_out16(s, RI_BRC | (S390_CC_NE << 4));
ldst->label_ptr[0] = s->code_ptr++;
- }
- h->base = addr_reg;
- if (addr_type == TCG_TYPE_I32) {
- tcg_out_ext32u(s, TCG_TMP0, addr_reg);
- h->base = TCG_TMP0;
- }
- if (guest_base < 0x80000) {
- h->index = TCG_REG_NONE;
- h->disp = guest_base;
- } else {
- h->index = TCG_GUEST_BASE_REG;
+ h->index = TCG_TMP0;
+ tcg_out_insn(s, RXY, LG, h->index, TCG_TMP0, TCG_REG_NONE,
+ offsetof(CPUTLBEntry, addend));
+
+ if (addr_type == TCG_TYPE_I32) {
+ tcg_out_insn(s, RRE, ALGFR, h->index, addr_reg);
+ h->base = TCG_REG_NONE;
+ } else {
+ h->base = addr_reg;
+ }
h->disp = 0;
+ } else {
+ if (a_mask) {
+ ldst = new_ldst_label(s);
+ ldst->is_ld = is_ld;
+ ldst->oi = oi;
+ ldst->addrlo_reg = addr_reg;
+
+ /* We are expecting a_bits to max out at 7, much lower than TMLL. */
+ tcg_debug_assert(a_mask <= 0xffff);
+ tcg_out_insn(s, RI, TMLL, addr_reg, a_mask);
+
+ tcg_out16(s, RI_BRC | (7 << 4)); /* CC in {1,2,3} */
+ ldst->label_ptr[0] = s->code_ptr++;
+ }
+
+ h->base = addr_reg;
+ if (addr_type == TCG_TYPE_I32) {
+ tcg_out_ext32u(s, TCG_TMP0, addr_reg);
+ h->base = TCG_TMP0;
+ }
+ if (guest_base < 0x80000) {
+ h->index = TCG_REG_NONE;
+ h->disp = guest_base;
+ } else {
+ h->index = TCG_GUEST_BASE_REG;
+ h->disp = 0;
+ }
}
-#endif
return ldst;
}
@@ -3453,12 +3452,10 @@ static void tcg_target_qemu_prologue(TCGContext *s)
TCG_STATIC_CALL_ARGS_SIZE + TCG_TARGET_CALL_STACK_OFFSET,
CPU_TEMP_BUF_NLONGS * sizeof(long));
-#ifndef CONFIG_SOFTMMU
- if (guest_base >= 0x80000) {
+ if (!tcg_use_softmmu && guest_base >= 0x80000) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
}
-#endif
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 25/29] tcg: drop unused tcg_temp_free define
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (23 preceding siblings ...)
2023-10-18 22:25 ` [PULL 24/29] tcg/s390x: " Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 26/29] tcg: Use constant zero when expanding with divu2 Richard Henderson
` (3 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Mike Frysinger, Philippe Mathieu-Daudé
From: Mike Frysinger <vapier@gentoo.org>
Use of the API was removed a while back, but the define wasn't.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20231015010046.16020-1-vapier@gentoo.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/tcg/tcg-op.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/include/tcg/tcg-op.h b/include/tcg/tcg-op.h
index 80cfcf8104..3ead59e459 100644
--- a/include/tcg/tcg-op.h
+++ b/include/tcg/tcg-op.h
@@ -52,7 +52,6 @@ static inline void tcg_gen_insn_start(target_ulong pc, target_ulong a1,
typedef TCGv_i32 TCGv;
#define tcg_temp_new() tcg_temp_new_i32()
#define tcg_global_mem_new tcg_global_mem_new_i32
-#define tcg_temp_free tcg_temp_free_i32
#define tcgv_tl_temp tcgv_i32_temp
#define tcg_gen_qemu_ld_tl tcg_gen_qemu_ld_i32
#define tcg_gen_qemu_st_tl tcg_gen_qemu_st_i32
@@ -60,7 +59,6 @@ typedef TCGv_i32 TCGv;
typedef TCGv_i64 TCGv;
#define tcg_temp_new() tcg_temp_new_i64()
#define tcg_global_mem_new tcg_global_mem_new_i64
-#define tcg_temp_free tcg_temp_free_i64
#define tcgv_tl_temp tcgv_i64_temp
#define tcg_gen_qemu_ld_tl tcg_gen_qemu_ld_i64
#define tcg_gen_qemu_st_tl tcg_gen_qemu_st_i64
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 26/29] tcg: Use constant zero when expanding with divu2
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (24 preceding siblings ...)
2023-10-18 22:25 ` [PULL 25/29] tcg: drop unused tcg_temp_free define Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 27/29] tcg: Optimize past conditional branches Richard Henderson
` (2 subsequent siblings)
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/tcg-op.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 393dbcd01c..c29355b67b 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -342,8 +342,8 @@ void tcg_gen_divu_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2)
tcg_gen_op3_i32(INDEX_op_divu_i32, ret, arg1, arg2);
} else if (TCG_TARGET_HAS_div2_i32) {
TCGv_i32 t0 = tcg_temp_ebb_new_i32();
- tcg_gen_movi_i32(t0, 0);
- tcg_gen_op5_i32(INDEX_op_divu2_i32, ret, t0, arg1, t0, arg2);
+ TCGv_i32 zero = tcg_constant_i32(0);
+ tcg_gen_op5_i32(INDEX_op_divu2_i32, ret, t0, arg1, zero, arg2);
tcg_temp_free_i32(t0);
} else {
gen_helper_divu_i32(ret, arg1, arg2);
@@ -362,8 +362,8 @@ void tcg_gen_remu_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2)
tcg_temp_free_i32(t0);
} else if (TCG_TARGET_HAS_div2_i32) {
TCGv_i32 t0 = tcg_temp_ebb_new_i32();
- tcg_gen_movi_i32(t0, 0);
- tcg_gen_op5_i32(INDEX_op_divu2_i32, t0, ret, arg1, t0, arg2);
+ TCGv_i32 zero = tcg_constant_i32(0);
+ tcg_gen_op5_i32(INDEX_op_divu2_i32, t0, ret, arg1, zero, arg2);
tcg_temp_free_i32(t0);
} else {
gen_helper_remu_i32(ret, arg1, arg2);
@@ -1674,8 +1674,8 @@ void tcg_gen_divu_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2)
tcg_gen_op3_i64(INDEX_op_divu_i64, ret, arg1, arg2);
} else if (TCG_TARGET_HAS_div2_i64) {
TCGv_i64 t0 = tcg_temp_ebb_new_i64();
- tcg_gen_movi_i64(t0, 0);
- tcg_gen_op5_i64(INDEX_op_divu2_i64, ret, t0, arg1, t0, arg2);
+ TCGv_i64 zero = tcg_constant_i64(0);
+ tcg_gen_op5_i64(INDEX_op_divu2_i64, ret, t0, arg1, zero, arg2);
tcg_temp_free_i64(t0);
} else {
gen_helper_divu_i64(ret, arg1, arg2);
@@ -1694,8 +1694,8 @@ void tcg_gen_remu_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2)
tcg_temp_free_i64(t0);
} else if (TCG_TARGET_HAS_div2_i64) {
TCGv_i64 t0 = tcg_temp_ebb_new_i64();
- tcg_gen_movi_i64(t0, 0);
- tcg_gen_op5_i64(INDEX_op_divu2_i64, t0, ret, arg1, t0, arg2);
+ TCGv_i64 zero = tcg_constant_i64(0);
+ tcg_gen_op5_i64(INDEX_op_divu2_i64, t0, ret, arg1, zero, arg2);
tcg_temp_free_i64(t0);
} else {
gen_helper_remu_i64(ret, arg1, arg2);
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 27/29] tcg: Optimize past conditional branches
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (25 preceding siblings ...)
2023-10-18 22:25 ` [PULL 26/29] tcg: Use constant zero when expanding with divu2 Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 28/29] tcg: Add tcg_gen_{ld,st}_i128 Richard Henderson
2023-10-18 22:25 ` [PULL 29/29] target/i386: Use i128 for 128 and 256-bit loads and stores Richard Henderson
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
We already register allocate through extended basic blocks,
optimize through extended basic blocks as well.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/optimize.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 3013eb04e6..2db5177c32 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -688,12 +688,14 @@ static void finish_folding(OptContext *ctx, TCGOp *op)
int i, nb_oargs;
/*
- * For an opcode that ends a BB, reset all temp data.
- * We do no cross-BB optimization.
+ * We only optimize extended basic blocks. If the opcode ends a BB
+ * and is not a conditional branch, reset all temp data.
*/
if (def->flags & TCG_OPF_BB_END) {
- memset(&ctx->temps_used, 0, sizeof(ctx->temps_used));
ctx->prev_mb = NULL;
+ if (!(def->flags & TCG_OPF_COND_BRANCH)) {
+ memset(&ctx->temps_used, 0, sizeof(ctx->temps_used));
+ }
return;
}
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 28/29] tcg: Add tcg_gen_{ld,st}_i128
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (26 preceding siblings ...)
2023-10-18 22:25 ` [PULL 27/29] tcg: Optimize past conditional branches Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
2023-10-18 22:25 ` [PULL 29/29] target/i386: Use i128 for 128 and 256-bit loads and stores Richard Henderson
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel; +Cc: Song Gao, Philippe Mathieu-Daudé
Do not require the translators to jump through concat and
extract of i64 in order to move values to and from env.
Tested-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/tcg/tcg-op-common.h | 3 +++
tcg/tcg-op.c | 22 ++++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/include/tcg/tcg-op-common.h b/include/tcg/tcg-op-common.h
index 2048f92b5e..56d4e9cb9f 100644
--- a/include/tcg/tcg-op-common.h
+++ b/include/tcg/tcg-op-common.h
@@ -747,6 +747,9 @@ void tcg_gen_mov_i128(TCGv_i128 dst, TCGv_i128 src);
void tcg_gen_extr_i128_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i128 arg);
void tcg_gen_concat_i64_i128(TCGv_i128 ret, TCGv_i64 lo, TCGv_i64 hi);
+void tcg_gen_ld_i128(TCGv_i128 ret, TCGv_ptr base, tcg_target_long offset);
+void tcg_gen_st_i128(TCGv_i128 val, TCGv_ptr base, tcg_target_long offset);
+
static inline void tcg_gen_concat32_i64(TCGv_i64 ret, TCGv_i64 lo, TCGv_i64 hi)
{
tcg_gen_deposit_i64(ret, lo, hi, 32, 32);
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index c29355b67b..b4dbb2f2ba 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -2880,6 +2880,28 @@ void tcg_gen_mov_i128(TCGv_i128 dst, TCGv_i128 src)
}
}
+void tcg_gen_ld_i128(TCGv_i128 ret, TCGv_ptr base, tcg_target_long offset)
+{
+ if (HOST_BIG_ENDIAN) {
+ tcg_gen_ld_i64(TCGV128_HIGH(ret), base, offset);
+ tcg_gen_ld_i64(TCGV128_LOW(ret), base, offset + 8);
+ } else {
+ tcg_gen_ld_i64(TCGV128_LOW(ret), base, offset);
+ tcg_gen_ld_i64(TCGV128_HIGH(ret), base, offset + 8);
+ }
+}
+
+void tcg_gen_st_i128(TCGv_i128 val, TCGv_ptr base, tcg_target_long offset)
+{
+ if (HOST_BIG_ENDIAN) {
+ tcg_gen_st_i64(TCGV128_HIGH(val), base, offset);
+ tcg_gen_st_i64(TCGV128_LOW(val), base, offset + 8);
+ } else {
+ tcg_gen_st_i64(TCGV128_LOW(val), base, offset);
+ tcg_gen_st_i64(TCGV128_HIGH(val), base, offset + 8);
+ }
+}
+
/* QEMU specific operations. */
void tcg_gen_exit_tb(const TranslationBlock *tb, unsigned idx)
--
2.34.1
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PULL 29/29] target/i386: Use i128 for 128 and 256-bit loads and stores
2023-10-18 22:25 [PULL 00/29] tcg patch queue Richard Henderson
` (27 preceding siblings ...)
2023-10-18 22:25 ` [PULL 28/29] tcg: Add tcg_gen_{ld,st}_i128 Richard Henderson
@ 2023-10-18 22:25 ` Richard Henderson
28 siblings, 0 replies; 31+ messages in thread
From: Richard Henderson @ 2023-10-18 22:25 UTC (permalink / raw)
To: qemu-devel
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/i386/tcg/translate.c | 63 +++++++++++++++++--------------------
1 file changed, 29 insertions(+), 34 deletions(-)
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index d2061ec44a..0c81e066de 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -2918,59 +2918,54 @@ static inline void gen_stq_env_A0(DisasContext *s, int offset)
static inline void gen_ldo_env_A0(DisasContext *s, int offset, bool align)
{
+ MemOp atom = (s->cpuid_ext_features & CPUID_EXT_AVX
+ ? MO_ATOM_IFALIGN : MO_ATOM_IFALIGN_PAIR);
+ MemOp mop = MO_128 | MO_LE | atom | (align ? MO_ALIGN_16 : 0);
int mem_index = s->mem_index;
- tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0, mem_index,
- MO_LEUQ | (align ? MO_ALIGN_16 : 0));
- tcg_gen_st_i64(s->tmp1_i64, tcg_env, offset + offsetof(XMMReg, XMM_Q(0)));
- tcg_gen_addi_tl(s->tmp0, s->A0, 8);
- tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
- tcg_gen_st_i64(s->tmp1_i64, tcg_env, offset + offsetof(XMMReg, XMM_Q(1)));
+ TCGv_i128 t = tcg_temp_new_i128();
+
+ tcg_gen_qemu_ld_i128(t, s->A0, mem_index, mop);
+ tcg_gen_st_i128(t, tcg_env, offset);
}
static inline void gen_sto_env_A0(DisasContext *s, int offset, bool align)
{
+ MemOp atom = (s->cpuid_ext_features & CPUID_EXT_AVX
+ ? MO_ATOM_IFALIGN : MO_ATOM_IFALIGN_PAIR);
+ MemOp mop = MO_128 | MO_LE | atom | (align ? MO_ALIGN_16 : 0);
int mem_index = s->mem_index;
- tcg_gen_ld_i64(s->tmp1_i64, tcg_env, offset + offsetof(XMMReg, XMM_Q(0)));
- tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0, mem_index,
- MO_LEUQ | (align ? MO_ALIGN_16 : 0));
- tcg_gen_addi_tl(s->tmp0, s->A0, 8);
- tcg_gen_ld_i64(s->tmp1_i64, tcg_env, offset + offsetof(XMMReg, XMM_Q(1)));
- tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
+ TCGv_i128 t = tcg_temp_new_i128();
+
+ tcg_gen_ld_i128(t, tcg_env, offset);
+ tcg_gen_qemu_st_i128(t, s->A0, mem_index, mop);
}
static void gen_ldy_env_A0(DisasContext *s, int offset, bool align)
{
+ MemOp mop = MO_128 | MO_LE | MO_ATOM_IFALIGN_PAIR;
int mem_index = s->mem_index;
- tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0, mem_index,
- MO_LEUQ | (align ? MO_ALIGN_32 : 0));
- tcg_gen_st_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(0)));
- tcg_gen_addi_tl(s->tmp0, s->A0, 8);
- tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
- tcg_gen_st_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(1)));
+ TCGv_i128 t0 = tcg_temp_new_i128();
+ TCGv_i128 t1 = tcg_temp_new_i128();
+ tcg_gen_qemu_ld_i128(t0, s->A0, mem_index, mop | (align ? MO_ALIGN_32 : 0));
tcg_gen_addi_tl(s->tmp0, s->A0, 16);
- tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
- tcg_gen_st_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(2)));
- tcg_gen_addi_tl(s->tmp0, s->A0, 24);
- tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
- tcg_gen_st_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(3)));
+ tcg_gen_qemu_ld_i128(t1, s->tmp0, mem_index, mop);
+
+ tcg_gen_st_i128(t0, tcg_env, offset + offsetof(YMMReg, YMM_X(0)));
+ tcg_gen_st_i128(t1, tcg_env, offset + offsetof(YMMReg, YMM_X(1)));
}
static void gen_sty_env_A0(DisasContext *s, int offset, bool align)
{
+ MemOp mop = MO_128 | MO_LE | MO_ATOM_IFALIGN_PAIR;
int mem_index = s->mem_index;
- tcg_gen_ld_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(0)));
- tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0, mem_index,
- MO_LEUQ | (align ? MO_ALIGN_32 : 0));
- tcg_gen_addi_tl(s->tmp0, s->A0, 8);
- tcg_gen_ld_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(1)));
- tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
+ TCGv_i128 t = tcg_temp_new_i128();
+
+ tcg_gen_ld_i128(t, tcg_env, offset + offsetof(YMMReg, YMM_X(0)));
+ tcg_gen_qemu_st_i128(t, s->A0, mem_index, mop | (align ? MO_ALIGN_32 : 0));
tcg_gen_addi_tl(s->tmp0, s->A0, 16);
- tcg_gen_ld_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(2)));
- tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
- tcg_gen_addi_tl(s->tmp0, s->A0, 24);
- tcg_gen_ld_i64(s->tmp1_i64, tcg_env, offset + offsetof(YMMReg, YMM_Q(3)));
- tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
+ tcg_gen_ld_i128(t, tcg_env, offset + offsetof(YMMReg, YMM_X(1)));
+ tcg_gen_qemu_st_i128(t, s->tmp0, mem_index, mop);
}
#include "decode-new.h"
--
2.34.1
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