From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: jniethe5@gmail.com
Subject: [PATCH v4 07/13] tcg/ppc: Use ADDPCIS in tcg_out_goto_tb
Date: Fri, 13 Oct 2023 10:10:06 -0700 [thread overview]
Message-ID: <20231013171012.122980-8-richard.henderson@linaro.org> (raw)
In-Reply-To: <20231013171012.122980-1-richard.henderson@linaro.org>
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
next prev parent reply other threads:[~2023-10-13 17:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-13 17:09 [PATCH v4 00/13] tcg/ppc: direct branching, power9, power10 Richard Henderson
2023-10-13 17:10 ` [PATCH v4 01/13] tcg/ppc: Untabify tcg-target.c.inc Richard Henderson
2023-10-13 17:10 ` [PATCH v4 02/13] tcg/ppc: Enable direct branching tcg_out_goto_tb with TCG_REG_TB Richard Henderson
2023-10-13 17:10 ` [PATCH v4 03/13] tcg/ppc: Reinterpret tb-relative to TB+4 Richard Henderson
2023-10-13 17:10 ` [PATCH v4 04/13] tcg/ppc: Use ADDPCIS in tcg_out_tb_start Richard Henderson
2023-10-13 17:10 ` [PATCH v4 05/13] tcg/ppc: Use ADDPCIS in tcg_out_movi_int Richard Henderson
2023-10-13 17:10 ` [PATCH v4 06/13] tcg/ppc: Use ADDPCIS for the constant pool Richard Henderson
2023-10-13 17:10 ` Richard Henderson [this message]
2023-10-13 17:10 ` [PATCH v4 08/13] tcg/ppc: Use PADDI in tcg_out_movi Richard Henderson
2023-10-13 17:10 ` [PATCH v4 09/13] tcg/ppc: Use prefixed instructions in tcg_out_mem_long Richard Henderson
2023-10-13 17:10 ` [PATCH v4 10/13] tcg/ppc: Use PLD in tcg_out_movi for constant pool Richard Henderson
2023-10-13 17:10 ` [PATCH v4 11/13] tcg/ppc: Use prefixed instructions in tcg_out_dupi_vec Richard Henderson
2023-10-13 17:10 ` [PATCH v4 12/13] tcg/ppc: Use PLD in tcg_out_goto_tb Richard Henderson
2023-10-13 17:10 ` [PATCH v4 13/13] tcg/ppc: Disable TCG_REG_TB for Power9/Power10 Richard Henderson
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