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target/sparc: Fix FMUL8x16A{U,L}

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These instructions have f32 inputs, which changes the decode
of the register numbers.  While we're fixing things, use a
common helper for both insns, extracting the 16-bit scalar
in tcg beforehand.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240502165528.244004-5-richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Richard Henderson 2024-05-02 09:55:25 -07:00 committed by Mark Cave-Ayland
parent 9157dccc7e
commit a859602c74
3 changed files with 48 additions and 40 deletions
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3
target/sparc/helper.h
View file

@ -96,8 +96,7 @@ DEF_HELPER_FLAGS_2(fqtox, TCG_CALL_NO_WG, s64, env, i128)
DEF_HELPER_FLAGS_2(fpmerge, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmul8x16, TCG_CALL_NO_RWG_SE, i64, i32, i64)
DEF_HELPER_FLAGS_2(fmul8x16al, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmul8x16au, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmul8x16a, TCG_CALL_NO_RWG_SE, i64, i32, s32)
DEF_HELPER_FLAGS_2(fmul8sux16, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmul8ulx16, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(fmuld8sux16, TCG_CALL_NO_RWG_SE, i64, i64, i64)

38
target/sparc/translate.c
View file

@ -45,6 +45,7 @@
# define gen_helper_clear_softint(E, S) qemu_build_not_reached()
# define gen_helper_done(E) qemu_build_not_reached()
# define gen_helper_flushw(E) qemu_build_not_reached()
# define gen_helper_fmul8x16a(D, S1, S2) qemu_build_not_reached()
# define gen_helper_rdccr(D, E) qemu_build_not_reached()
# define gen_helper_rdcwp(D, E) qemu_build_not_reached()
# define gen_helper_restored(E) qemu_build_not_reached()
@ -72,8 +73,6 @@
# define gen_helper_fexpand ({ qemu_build_not_reached(); NULL; })
# define gen_helper_fmul8sux16 ({ qemu_build_not_reached(); NULL; })
# define gen_helper_fmul8ulx16 ({ qemu_build_not_reached(); NULL; })
# define gen_helper_fmul8x16al ({ qemu_build_not_reached(); NULL; })
# define gen_helper_fmul8x16au ({ qemu_build_not_reached(); NULL; })
# define gen_helper_fmul8x16 ({ qemu_build_not_reached(); NULL; })
# define gen_helper_fmuld8sux16 ({ qemu_build_not_reached(); NULL; })
# define gen_helper_fmuld8ulx16 ({ qemu_build_not_reached(); NULL; })
@ -719,6 +718,18 @@ static void gen_op_bshuffle(TCGv_i64 dst, TCGv_i64 src1, TCGv_i64 src2)
#endif
}
static void gen_op_fmul8x16al(TCGv_i64 dst, TCGv_i32 src1, TCGv_i32 src2)
{
tcg_gen_ext16s_i32(src2, src2);
gen_helper_fmul8x16a(dst, src1, src2);
}
static void gen_op_fmul8x16au(TCGv_i64 dst, TCGv_i32 src1, TCGv_i32 src2)
{
tcg_gen_sari_i32(src2, src2, 16);
gen_helper_fmul8x16a(dst, src1, src2);
}
static void finishing_insn(DisasContext *dc)
{
/*
@ -4583,6 +4594,27 @@ TRANS(FSUBs, ALL, do_env_fff, a, gen_helper_fsubs)
TRANS(FMULs, ALL, do_env_fff, a, gen_helper_fmuls)
TRANS(FDIVs, ALL, do_env_fff, a, gen_helper_fdivs)
static bool do_dff(DisasContext *dc, arg_r_r_r *a,
void (*func)(TCGv_i64, TCGv_i32, TCGv_i32))
{
TCGv_i64 dst;
TCGv_i32 src1, src2;
if (gen_trap_ifnofpu(dc)) {
return true;
}
dst = gen_dest_fpr_D(dc, a->rd);
src1 = gen_load_fpr_F(dc, a->rs1);
src2 = gen_load_fpr_F(dc, a->rs2);
func(dst, src1, src2);
gen_store_fpr_D(dc, a->rd, dst);
return advance_pc(dc);
}
TRANS(FMUL8x16AU, VIS1, do_dff, a, gen_op_fmul8x16au)
TRANS(FMUL8x16AL, VIS1, do_dff, a, gen_op_fmul8x16al)
static bool do_dfd(DisasContext *dc, arg_r_r_r *a,
void (*func)(TCGv_i64, TCGv_i32, TCGv_i64))
{
@ -4620,8 +4652,6 @@ static bool do_ddd(DisasContext *dc, arg_r_r_r *a,
return advance_pc(dc);
}
TRANS(FMUL8x16AU, VIS1, do_ddd, a, gen_helper_fmul8x16au)
TRANS(FMUL8x16AL, VIS1, do_ddd, a, gen_helper_fmul8x16al)
TRANS(FMUL8SUx16, VIS1, do_ddd, a, gen_helper_fmul8sux16)
TRANS(FMUL8ULx16, VIS1, do_ddd, a, gen_helper_fmul8ulx16)
TRANS(FMULD8SUx16, VIS1, do_ddd, a, gen_helper_fmuld8sux16)

47
target/sparc/vis_helper.c
View file

@ -119,44 +119,23 @@ uint64_t helper_fmul8x16(uint32_t src1, uint64_t src2)
return d.ll;
}
uint64_t helper_fmul8x16al(uint64_t src1, uint64_t src2)
uint64_t helper_fmul8x16a(uint32_t src1, int32_t src2)
{
VIS64 s, d;
VIS32 s;
VIS64 d;
uint32_t tmp;
s.ll = src1;
d.ll = src2;
s.l = src1;
d.ll = 0;
#define PMUL(r) \
tmp = (int32_t)d.VIS_SW64(1) * (int32_t)s.VIS_B64(r); \
if ((tmp & 0xff) > 0x7f) { \
tmp += 0x100; \
} \
d.VIS_W64(r) = tmp >> 8;
PMUL(0);
PMUL(1);
PMUL(2);
PMUL(3);
#undef PMUL
return d.ll;
}
uint64_t helper_fmul8x16au(uint64_t src1, uint64_t src2)
{
VIS64 s, d;
uint32_t tmp;
s.ll = src1;
d.ll = src2;
#define PMUL(r) \
tmp = (int32_t)d.VIS_SW64(0) * (int32_t)s.VIS_B64(r); \
if ((tmp & 0xff) > 0x7f) { \
tmp += 0x100; \
} \
d.VIS_W64(r) = tmp >> 8;
#define PMUL(r) \
do { \
tmp = src2 * (int32_t)s.VIS_B32(r); \
if ((tmp & 0xff) > 0x7f) { \
tmp += 0x100; \
} \
d.VIS_W64(r) = tmp >> 8; \
} while (0)
PMUL(0);
PMUL(1);