From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [Qemu-devel] [PATCH v3 09/10] target/arm: Restructure handle_fp_1src_{single, double}
Date: Fri, 1 Mar 2019 12:05:00 -0800 [thread overview]
Message-ID: <20190301200501.16533-10-richard.henderson@linaro.org> (raw)
In-Reply-To: <20190301200501.16533-1-richard.henderson@linaro.org>
This will allow sharing code that adjusts rmode beyond
the existing users.
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/translate-a64.c | 90 +++++++++++++++++++++-----------------
1 file changed, 49 insertions(+), 41 deletions(-)
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index c2b9e800c8..94184ea5af 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -5686,55 +5686,59 @@ static void handle_fp_1src_half(DisasContext *s, int opcode, int rd, int rn)
/* Floating-point data-processing (1 source) - single precision */
static void handle_fp_1src_single(DisasContext *s, int opcode, int rd, int rn)
{
+ void (*gen_fpst)(TCGv_i32, TCGv_i32, TCGv_ptr);
+ TCGv_i32 tcg_op, tcg_res;
TCGv_ptr fpst;
- TCGv_i32 tcg_op;
- TCGv_i32 tcg_res;
+ int rmode = -1;
- fpst = get_fpstatus_ptr(false);
tcg_op = read_fp_sreg(s, rn);
tcg_res = tcg_temp_new_i32();
switch (opcode) {
case 0x0: /* FMOV */
tcg_gen_mov_i32(tcg_res, tcg_op);
- break;
+ goto done;
case 0x1: /* FABS */
gen_helper_vfp_abss(tcg_res, tcg_op);
- break;
+ goto done;
case 0x2: /* FNEG */
gen_helper_vfp_negs(tcg_res, tcg_op);
- break;
+ goto done;
case 0x3: /* FSQRT */
gen_helper_vfp_sqrts(tcg_res, tcg_op, cpu_env);
- break;
+ goto done;
case 0x8: /* FRINTN */
case 0x9: /* FRINTP */
case 0xa: /* FRINTM */
case 0xb: /* FRINTZ */
case 0xc: /* FRINTA */
- {
- TCGv_i32 tcg_rmode = tcg_const_i32(arm_rmode_to_sf(opcode & 7));
-
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- gen_helper_rints(tcg_res, tcg_op, fpst);
-
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- tcg_temp_free_i32(tcg_rmode);
+ rmode = arm_rmode_to_sf(opcode & 7);
+ gen_fpst = gen_helper_rints;
break;
- }
case 0xe: /* FRINTX */
- gen_helper_rints_exact(tcg_res, tcg_op, fpst);
+ gen_fpst = gen_helper_rints_exact;
break;
case 0xf: /* FRINTI */
- gen_helper_rints(tcg_res, tcg_op, fpst);
+ gen_fpst = gen_helper_rints;
break;
default:
- abort();
+ g_assert_not_reached();
}
- write_fp_sreg(s, rd, tcg_res);
-
+ fpst = get_fpstatus_ptr(false);
+ if (rmode >= 0) {
+ TCGv_i32 tcg_rmode = tcg_const_i32(rmode);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ gen_fpst(tcg_res, tcg_op, fpst);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ tcg_temp_free_i32(tcg_rmode);
+ } else {
+ gen_fpst(tcg_res, tcg_op, fpst);
+ }
tcg_temp_free_ptr(fpst);
+
+ done:
+ write_fp_sreg(s, rd, tcg_res);
tcg_temp_free_i32(tcg_op);
tcg_temp_free_i32(tcg_res);
}
@@ -5742,9 +5746,10 @@ static void handle_fp_1src_single(DisasContext *s, int opcode, int rd, int rn)
/* Floating-point data-processing (1 source) - double precision */
static void handle_fp_1src_double(DisasContext *s, int opcode, int rd, int rn)
{
+ void (*gen_fpst)(TCGv_i64, TCGv_i64, TCGv_ptr);
+ TCGv_i64 tcg_op, tcg_res;
TCGv_ptr fpst;
- TCGv_i64 tcg_op;
- TCGv_i64 tcg_res;
+ int rmode = -1;
switch (opcode) {
case 0x0: /* FMOV */
@@ -5752,48 +5757,51 @@ static void handle_fp_1src_double(DisasContext *s, int opcode, int rd, int rn)
return;
}
- fpst = get_fpstatus_ptr(false);
tcg_op = read_fp_dreg(s, rn);
tcg_res = tcg_temp_new_i64();
switch (opcode) {
case 0x1: /* FABS */
gen_helper_vfp_absd(tcg_res, tcg_op);
- break;
+ goto done;
case 0x2: /* FNEG */
gen_helper_vfp_negd(tcg_res, tcg_op);
- break;
+ goto done;
case 0x3: /* FSQRT */
gen_helper_vfp_sqrtd(tcg_res, tcg_op, cpu_env);
- break;
+ goto done;
case 0x8: /* FRINTN */
case 0x9: /* FRINTP */
case 0xa: /* FRINTM */
case 0xb: /* FRINTZ */
case 0xc: /* FRINTA */
- {
- TCGv_i32 tcg_rmode = tcg_const_i32(arm_rmode_to_sf(opcode & 7));
-
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- gen_helper_rintd(tcg_res, tcg_op, fpst);
-
- gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
- tcg_temp_free_i32(tcg_rmode);
+ rmode = arm_rmode_to_sf(opcode & 7);
+ gen_fpst = gen_helper_rintd;
break;
- }
case 0xe: /* FRINTX */
- gen_helper_rintd_exact(tcg_res, tcg_op, fpst);
+ gen_fpst = gen_helper_rintd_exact;
break;
case 0xf: /* FRINTI */
- gen_helper_rintd(tcg_res, tcg_op, fpst);
+ gen_fpst = gen_helper_rintd;
break;
default:
- abort();
+ g_assert_not_reached();
}
- write_fp_dreg(s, rd, tcg_res);
-
+ fpst = get_fpstatus_ptr(false);
+ if (rmode >= 0) {
+ TCGv_i32 tcg_rmode = tcg_const_i32(rmode);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ gen_fpst(tcg_res, tcg_op, fpst);
+ gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst);
+ tcg_temp_free_i32(tcg_rmode);
+ } else {
+ gen_fpst(tcg_res, tcg_op, fpst);
+ }
tcg_temp_free_ptr(fpst);
+
+ done:
+ write_fp_dreg(s, rd, tcg_res);
tcg_temp_free_i64(tcg_op);
tcg_temp_free_i64(tcg_res);
}
--
2.17.2
next prev parent reply other threads:[~2019-03-01 20:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-01 20:04 [Qemu-devel] [PATCH v3 00/10] target/arm: SB, PredInv, CondM, FRINT extensions Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 01/10] target/arm: Split out arm_sctlr Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 02/10] target/arm: Implement ARMv8.0-SB Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 03/10] target/arm: Implement ARMv8.0-PredInv Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 04/10] target/arm: Split helper_msr_i_pstate into 3 Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 05/10] target/arm: Add set/clear_pstate_bits, share gen_ss_advance Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 06/10] target/arm: Rearrange disas_data_proc_reg Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 07/10] target/arm: Implement ARMv8.4-CondM Richard Henderson
2019-03-01 20:04 ` [Qemu-devel] [PATCH v3 08/10] target/arm: Implement ARMv8.5-CondM Richard Henderson
2019-03-01 20:05 ` Richard Henderson [this message]
2019-03-01 20:05 ` [Qemu-devel] [PATCH v3 10/10] target/arm: Implement ARMv8.5-FRINT Richard Henderson
2019-03-04 17:43 ` [Qemu-devel] [PATCH v3 00/10] target/arm: SB, PredInv, CondM, FRINT extensions Peter Maydell
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