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* target/i386: new decoder bugfix

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* target/i386: complete x86-v3 support for TCG
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386: new decoder bugfix
* target/i386: complete x86-v3 support for TCG

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# QHJlZGhhdC5jb20ACgkQv/vSX3jHroOQNQf430MHbrtN9WKKiXv3684XxmcnoRqg
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# gpg: Signature made Sat 22 Oct 2022 03:07:16 EDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  target/i386: implement FMA instructions
  target/i386: implement F16C instructions
  target/i386: introduce function to set rounding mode from FPCW or MXCSR bits
  target/i386: decode-new: avoid out-of-bounds access to xmm_regs[-1]

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2022-10-24 14:27:06 -04:00
parent ce58c8ee4d 2872b0f390
commit e52d57c8c5
11 changed files with 247 additions and 102 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
target/i386/cpu.c
View file

@ -625,13 +625,13 @@ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
CPUID_EXT_SSE41 | CPUID_EXT_SSE42 | CPUID_EXT_POPCNT | \
CPUID_EXT_XSAVE | /* CPUID_EXT_OSXSAVE is dynamic */ \
CPUID_EXT_MOVBE | CPUID_EXT_AES | CPUID_EXT_HYPERVISOR | \
CPUID_EXT_RDRAND | CPUID_EXT_AVX)
CPUID_EXT_RDRAND | CPUID_EXT_AVX | CPUID_EXT_F16C | \
CPUID_EXT_FMA)
/* missing:
CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_SMX,
CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_CID, CPUID_EXT_FMA,
CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_CID,
CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_PCID, CPUID_EXT_DCA,
CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER,
CPUID_EXT_F16C */
CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER */
#ifdef TARGET_X86_64
#define TCG_EXT2_X86_64_FEATURES (CPUID_EXT2_SYSCALL | CPUID_EXT2_LM)

3
target/i386/cpu.h
View file

@ -1258,6 +1258,7 @@ typedef union ZMMReg {
uint16_t _w_ZMMReg[512 / 16];
uint32_t _l_ZMMReg[512 / 32];
uint64_t _q_ZMMReg[512 / 64];
float16 _h_ZMMReg[512 / 16];
float32 _s_ZMMReg[512 / 32];
float64 _d_ZMMReg[512 / 64];
XMMReg _x_ZMMReg[512 / 128];
@ -1282,6 +1283,7 @@ typedef struct BNDCSReg {
#define ZMM_B(n) _b_ZMMReg[63 - (n)]
#define ZMM_W(n) _w_ZMMReg[31 - (n)]
#define ZMM_L(n) _l_ZMMReg[15 - (n)]
#define ZMM_H(n) _h_ZMMReg[31 - (n)]
#define ZMM_S(n) _s_ZMMReg[15 - (n)]
#define ZMM_Q(n) _q_ZMMReg[7 - (n)]
#define ZMM_D(n) _d_ZMMReg[7 - (n)]
@ -1301,6 +1303,7 @@ typedef struct BNDCSReg {
#define ZMM_B(n) _b_ZMMReg[n]
#define ZMM_W(n) _w_ZMMReg[n]
#define ZMM_L(n) _l_ZMMReg[n]
#define ZMM_H(n) _h_ZMMReg[n]
#define ZMM_S(n) _s_ZMMReg[n]
#define ZMM_Q(n) _q_ZMMReg[n]
#define ZMM_D(n) _d_ZMMReg[n]

116
target/i386/ops_sse.h
View file

@ -586,6 +586,35 @@ void glue(helper_cvtpd2ps, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
}
}
#if SHIFT >= 1
void glue(helper_cvtph2ps, SUFFIX)(CPUX86State *env, Reg *d, Reg *s)
{
int i;
for (i = 2 << SHIFT; --i >= 0; ) {
d->ZMM_S(i) = float16_to_float32(s->ZMM_H(i), true, &env->sse_status);
}
}
void glue(helper_cvtps2ph, SUFFIX)(CPUX86State *env, Reg *d, Reg *s, int mode)
{
int i;
FloatRoundMode prev_rounding_mode = env->sse_status.float_rounding_mode;
if (!(mode & (1 << 2))) {
set_x86_rounding_mode(mode & 3, &env->sse_status);
}
for (i = 0; i < 2 << SHIFT; i++) {
d->ZMM_H(i) = float32_to_float16(s->ZMM_S(i), true, &env->sse_status);
}
for (i >>= 2; i < 1 << SHIFT; i++) {
d->Q(i) = 0;
}
env->sse_status.float_rounding_mode = prev_rounding_mode;
}
#endif
#if SHIFT == 1
void helper_cvtss2sd(CPUX86State *env, Reg *d, Reg *v, Reg *s)
{
@ -1684,20 +1713,7 @@ void glue(helper_roundps, SUFFIX)(CPUX86State *env, Reg *d, Reg *s,
prev_rounding_mode = env->sse_status.float_rounding_mode;
if (!(mode & (1 << 2))) {
switch (mode & 3) {
case 0:
set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
break;
case 1:
set_float_rounding_mode(float_round_down, &env->sse_status);
break;
case 2:
set_float_rounding_mode(float_round_up, &env->sse_status);
break;
case 3:
set_float_rounding_mode(float_round_to_zero, &env->sse_status);
break;
}
set_x86_rounding_mode(mode & 3, &env->sse_status);
}
for (i = 0; i < 2 << SHIFT; i++) {
@ -1721,20 +1737,7 @@ void glue(helper_roundpd, SUFFIX)(CPUX86State *env, Reg *d, Reg *s,
prev_rounding_mode = env->sse_status.float_rounding_mode;
if (!(mode & (1 << 2))) {
switch (mode & 3) {
case 0:
set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
break;
case 1:
set_float_rounding_mode(float_round_down, &env->sse_status);
break;
case 2:
set_float_rounding_mode(float_round_up, &env->sse_status);
break;
case 3:
set_float_rounding_mode(float_round_to_zero, &env->sse_status);
break;
}
set_x86_rounding_mode(mode & 3, &env->sse_status);
}
for (i = 0; i < 1 << SHIFT; i++) {
@ -1759,20 +1762,7 @@ void glue(helper_roundss, SUFFIX)(CPUX86State *env, Reg *d, Reg *v, Reg *s,
prev_rounding_mode = env->sse_status.float_rounding_mode;
if (!(mode & (1 << 2))) {
switch (mode & 3) {
case 0:
set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
break;
case 1:
set_float_rounding_mode(float_round_down, &env->sse_status);
break;
case 2:
set_float_rounding_mode(float_round_up, &env->sse_status);
break;
case 3:
set_float_rounding_mode(float_round_to_zero, &env->sse_status);
break;
}
set_x86_rounding_mode(mode & 3, &env->sse_status);
}
d->ZMM_S(0) = float32_round_to_int(s->ZMM_S(0), &env->sse_status);
@ -1797,20 +1787,7 @@ void glue(helper_roundsd, SUFFIX)(CPUX86State *env, Reg *d, Reg *v, Reg *s,
prev_rounding_mode = env->sse_status.float_rounding_mode;
if (!(mode & (1 << 2))) {
switch (mode & 3) {
case 0:
set_float_rounding_mode(float_round_nearest_even, &env->sse_status);
break;
case 1:
set_float_rounding_mode(float_round_down, &env->sse_status);
break;
case 2:
set_float_rounding_mode(float_round_up, &env->sse_status);
break;
case 3:
set_float_rounding_mode(float_round_to_zero, &env->sse_status);
break;
}
set_x86_rounding_mode(mode & 3, &env->sse_status);
}
d->ZMM_D(0) = float64_round_to_int(s->ZMM_D(0), &env->sse_status);
@ -2545,6 +2522,33 @@ void helper_vpermd_ymm(Reg *d, Reg *v, Reg *s)
}
#endif
/* FMA3 op helpers */
#if SHIFT == 1
#define SSE_HELPER_FMAS(name, elem, F) \
void name(CPUX86State *env, Reg *d, Reg *a, Reg *b, Reg *c, int flags) \
{ \
d->elem(0) = F(a->elem(0), b->elem(0), c->elem(0), flags, &env->sse_status); \
}
#define SSE_HELPER_FMAP(name, elem, num, F) \
void glue(name, SUFFIX)(CPUX86State *env, Reg *d, Reg *a, Reg *b, Reg *c, \
int flags, int flip) \
{ \
int i; \
for (i = 0; i < num; i++) { \
d->elem(i) = F(a->elem(i), b->elem(i), c->elem(i), flags, &env->sse_status); \
flags ^= flip; \
} \
}
SSE_HELPER_FMAS(helper_fma4ss, ZMM_S, float32_muladd)
SSE_HELPER_FMAS(helper_fma4sd, ZMM_D, float64_muladd)
#endif
#if SHIFT >= 1
SSE_HELPER_FMAP(helper_fma4ps, ZMM_S, 2 << SHIFT, float32_muladd)
SSE_HELPER_FMAP(helper_fma4pd, ZMM_D, 1 << SHIFT, float64_muladd)
#endif
#undef SSE_HELPER_S
#undef LANE_WIDTH

17
target/i386/ops_sse_header.h
View file

@ -353,6 +353,23 @@ DEF_HELPER_4(glue(aeskeygenassist, SUFFIX), void, env, Reg, Reg, i32)
DEF_HELPER_5(glue(pclmulqdq, SUFFIX), void, env, Reg, Reg, Reg, i32)
#endif
/* F16C helpers */
#if SHIFT >= 1
DEF_HELPER_3(glue(cvtph2ps, SUFFIX), void, env, Reg, Reg)
DEF_HELPER_4(glue(cvtps2ph, SUFFIX), void, env, Reg, Reg, int)
#endif
/* FMA3 helpers */
#if SHIFT == 1
DEF_HELPER_6(fma4ss, void, env, Reg, Reg, Reg, Reg, int)
DEF_HELPER_6(fma4sd, void, env, Reg, Reg, Reg, Reg, int)
#endif
#if SHIFT >= 1
DEF_HELPER_7(glue(fma4ps, SUFFIX), void, env, Reg, Reg, Reg, Reg, int, int)
DEF_HELPER_7(glue(fma4pd, SUFFIX), void, env, Reg, Reg, Reg, Reg, int, int)
#endif
/* AVX helpers */
#if SHIFT >= 1
DEF_HELPER_4(glue(vpermilpd, SUFFIX), void, env, Reg, Reg, Reg)

48
target/i386/tcg/decode-new.c.inc
View file

@ -336,6 +336,7 @@ static const X86OpEntry opcodes_0F38_00toEF[240] = {
[0x07] = X86_OP_ENTRY3(PHSUBSW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x10] = X86_OP_ENTRY2(PBLENDVB, V,x, W,x, vex4 cpuid(SSE41) avx2_256 p_66),
[0x13] = X86_OP_ENTRY2(VCVTPH2PS, V,x, W,ph, vex11 cpuid(F16C) p_66),
[0x14] = X86_OP_ENTRY2(BLENDVPS, V,x, W,x, vex4 cpuid(SSE41) p_66),
[0x15] = X86_OP_ENTRY2(BLENDVPD, V,x, W,x, vex4 cpuid(SSE41) p_66),
/* Listed incorrectly as type 4 */
@ -375,6 +376,16 @@ static const X86OpEntry opcodes_0F38_00toEF[240] = {
[0x92] = X86_OP_ENTRY3(VPGATHERD, V,x, H,x, M,d, vex12 cpuid(AVX2) p_66), /* vgatherdps/d */
[0x93] = X86_OP_ENTRY3(VPGATHERQ, V,x, H,x, M,q, vex12 cpuid(AVX2) p_66), /* vgatherqps/d */
/* Should be exception type 2 but they do not have legacy SSE equivalents? */
[0x96] = X86_OP_ENTRY3(VFMADDSUB132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x97] = X86_OP_ENTRY3(VFMSUBADD132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa6] = X86_OP_ENTRY3(VFMADDSUB213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa7] = X86_OP_ENTRY3(VFMSUBADD213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb6] = X86_OP_ENTRY3(VFMADDSUB231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb7] = X86_OP_ENTRY3(VFMSUBADD231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x08] = X86_OP_ENTRY3(PSIGNB, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x09] = X86_OP_ENTRY3(PSIGNW, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
[0x0a] = X86_OP_ENTRY3(PSIGND, V,x, H,x, W,x, vex4 cpuid(SSSE3) mmx avx2_256 p_00_66),
@ -420,6 +431,34 @@ static const X86OpEntry opcodes_0F38_00toEF[240] = {
[0x8c] = X86_OP_ENTRY3(VPMASKMOV, V,x, H,x, WM,x, vex6 cpuid(AVX2) p_66),
[0x8e] = X86_OP_ENTRY3(VPMASKMOV_st, M,x, V,x, H,x, vex6 cpuid(AVX2) p_66),
/* Should be exception type 2 or 3 but they do not have legacy SSE equivalents? */
[0x98] = X86_OP_ENTRY3(VFMADD132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x99] = X86_OP_ENTRY3(VFMADD132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9a] = X86_OP_ENTRY3(VFMSUB132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9b] = X86_OP_ENTRY3(VFMSUB132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9c] = X86_OP_ENTRY3(VFNMADD132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9d] = X86_OP_ENTRY3(VFNMADD132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9e] = X86_OP_ENTRY3(VFNMSUB132Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0x9f] = X86_OP_ENTRY3(VFNMSUB132Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa8] = X86_OP_ENTRY3(VFMADD213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xa9] = X86_OP_ENTRY3(VFMADD213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xaa] = X86_OP_ENTRY3(VFMSUB213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xab] = X86_OP_ENTRY3(VFMSUB213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xac] = X86_OP_ENTRY3(VFNMADD213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xad] = X86_OP_ENTRY3(VFNMADD213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xae] = X86_OP_ENTRY3(VFNMSUB213Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xaf] = X86_OP_ENTRY3(VFNMSUB213Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb8] = X86_OP_ENTRY3(VFMADD231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xb9] = X86_OP_ENTRY3(VFMADD231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xba] = X86_OP_ENTRY3(VFMSUB231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbb] = X86_OP_ENTRY3(VFMSUB231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbc] = X86_OP_ENTRY3(VFNMADD231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbd] = X86_OP_ENTRY3(VFNMADD231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbe] = X86_OP_ENTRY3(VFNMSUB231Px, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xbf] = X86_OP_ENTRY3(VFNMSUB231Sx, V,x, H,x, W,x, vex6 cpuid(FMA) p_66),
[0xdb] = X86_OP_ENTRY3(VAESIMC, V,dq, None,None, W,dq, vex4 cpuid(AES) p_66),
[0xdc] = X86_OP_ENTRY3(VAESENC, V,x, H,x, W,x, vex4 cpuid(AES) p_66),
[0xdd] = X86_OP_ENTRY3(VAESENCLAST, V,x, H,x, W,x, vex4 cpuid(AES) p_66),
@ -525,6 +564,7 @@ static const X86OpEntry opcodes_0F3A[256] = {
[0x15] = X86_OP_ENTRY3(PEXTRW, E,w, V,dq, I,b, vex5 cpuid(SSE41) zext0 p_66),
[0x16] = X86_OP_ENTRY3(PEXTR, E,y, V,dq, I,b, vex5 cpuid(SSE41) p_66),
[0x17] = X86_OP_ENTRY3(VEXTRACTPS, E,d, V,dq, I,b, vex5 cpuid(SSE41) p_66),
[0x1d] = X86_OP_ENTRY3(VCVTPS2PH, W,ph, V,x, I,b, vex11 cpuid(F16C) p_66),
[0x20] = X86_OP_ENTRY4(PINSRB, V,dq, H,dq, E,b, vex5 cpuid(SSE41) zext2 p_66),
[0x21] = X86_OP_GROUP0(VINSERTPS),
@ -1051,6 +1091,10 @@ static bool decode_op_size(DisasContext *s, X86OpEntry *e, X86OpSize size, MemOp
*ot = s->vex_l ? MO_256 : MO_128;
return true;
case X86_SIZE_ph: /* SSE/AVX packed half precision */
*ot = s->vex_l ? MO_128 : MO_64;
return true;
case X86_SIZE_d64: /* Default to 64-bit in 64-bit mode */
*ot = CODE64(s) && s->dflag == MO_32 ? MO_64 : s->dflag;
return true;
@ -1342,6 +1386,10 @@ static bool has_cpuid_feature(DisasContext *s, X86CPUIDFeature cpuid)
switch (cpuid) {
case X86_FEAT_None:
return true;
case X86_FEAT_F16C:
return (s->cpuid_ext_features & CPUID_EXT_F16C);
case X86_FEAT_FMA:
return (s->cpuid_ext_features & CPUID_EXT_FMA);
case X86_FEAT_MOVBE:
return (s->cpuid_ext_features & CPUID_EXT_MOVBE);
case X86_FEAT_PCLMULQDQ:

3
target/i386/tcg/decode-new.h
View file

@ -92,6 +92,7 @@ typedef enum X86OpSize {
/* Custom */
X86_SIZE_d64,
X86_SIZE_f64,
X86_SIZE_ph, /* SSE/AVX packed half precision */
} X86OpSize;
typedef enum X86CPUIDFeature {
@ -103,6 +104,8 @@ typedef enum X86CPUIDFeature {
X86_FEAT_AVX2,
X86_FEAT_BMI1,
X86_FEAT_BMI2,
X86_FEAT_F16C,
X86_FEAT_FMA,
X86_FEAT_MOVBE,
X86_FEAT_PCLMULQDQ,
X86_FEAT_SSE,

68
target/i386/tcg/emit.c.inc
View file

@ -39,6 +39,11 @@ typedef void (*SSEFunc_0_eppt)(TCGv_ptr env, TCGv_ptr reg_a, TCGv_ptr reg_b,
TCGv val);
typedef void (*SSEFunc_0_epppti)(TCGv_ptr env, TCGv_ptr reg_a, TCGv_ptr reg_b,
TCGv_ptr reg_c, TCGv a0, TCGv_i32 scale);
typedef void (*SSEFunc_0_eppppi)(TCGv_ptr env, TCGv_ptr reg_a, TCGv_ptr reg_b,
TCGv_ptr reg_c, TCGv_ptr reg_d, TCGv_i32 flags);
typedef void (*SSEFunc_0_eppppii)(TCGv_ptr env, TCGv_ptr reg_a, TCGv_ptr reg_b,
TCGv_ptr reg_c, TCGv_ptr reg_d, TCGv_i32 even,
TCGv_i32 odd);
static inline TCGv_i32 tcg_constant8u_i32(uint8_t val)
{
@ -296,7 +301,7 @@ static void gen_writeback(DisasContext *s, X86DecodedInsn *decode, int opn, TCGv
case X86_OP_MMX:
break;
case X86_OP_SSE:
if ((s->prefix & PREFIX_VEX) && op->ot == MO_128) {
if (!op->has_ea && (s->prefix & PREFIX_VEX) && op->ot <= MO_128) {
tcg_gen_gvec_dup_imm(MO_64,
offsetof(CPUX86State, xmm_regs[op->n].ZMM_X(1)),
16, 16, 0);
@ -491,6 +496,52 @@ FP_SSE(VMIN, min)
FP_SSE(VDIV, div)
FP_SSE(VMAX, max)
#define FMA_SSE_PACKED(uname, ptr0, ptr1, ptr2, even, odd) \
static void gen_##uname##Px(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode) \
{ \
SSEFunc_0_eppppii xmm = s->vex_w ? gen_helper_fma4pd_xmm : gen_helper_fma4ps_xmm; \
SSEFunc_0_eppppii ymm = s->vex_w ? gen_helper_fma4pd_ymm : gen_helper_fma4ps_ymm; \
SSEFunc_0_eppppii fn = s->vex_l ? ymm : xmm; \
\
fn(cpu_env, OP_PTR0, ptr0, ptr1, ptr2, \
tcg_constant_i32(even), \
tcg_constant_i32((even) ^ (odd))); \
}
#define FMA_SSE(uname, ptr0, ptr1, ptr2, flags) \
FMA_SSE_PACKED(uname, ptr0, ptr1, ptr2, flags, flags) \
static void gen_##uname##Sx(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode) \
{ \
SSEFunc_0_eppppi fn = s->vex_w ? gen_helper_fma4sd : gen_helper_fma4ss; \
\
fn(cpu_env, OP_PTR0, ptr0, ptr1, ptr2, \
tcg_constant_i32(flags)); \
} \
FMA_SSE(VFMADD231, OP_PTR1, OP_PTR2, OP_PTR0, 0)
FMA_SSE(VFMADD213, OP_PTR1, OP_PTR0, OP_PTR2, 0)
FMA_SSE(VFMADD132, OP_PTR0, OP_PTR2, OP_PTR1, 0)
FMA_SSE(VFNMADD231, OP_PTR1, OP_PTR2, OP_PTR0, float_muladd_negate_product)
FMA_SSE(VFNMADD213, OP_PTR1, OP_PTR0, OP_PTR2, float_muladd_negate_product)
FMA_SSE(VFNMADD132, OP_PTR0, OP_PTR2, OP_PTR1, float_muladd_negate_product)
FMA_SSE(VFMSUB231, OP_PTR1, OP_PTR2, OP_PTR0, float_muladd_negate_c)
FMA_SSE(VFMSUB213, OP_PTR1, OP_PTR0, OP_PTR2, float_muladd_negate_c)
FMA_SSE(VFMSUB132, OP_PTR0, OP_PTR2, OP_PTR1, float_muladd_negate_c)
FMA_SSE(VFNMSUB231, OP_PTR1, OP_PTR2, OP_PTR0, float_muladd_negate_c|float_muladd_negate_product)
FMA_SSE(VFNMSUB213, OP_PTR1, OP_PTR0, OP_PTR2, float_muladd_negate_c|float_muladd_negate_product)
FMA_SSE(VFNMSUB132, OP_PTR0, OP_PTR2, OP_PTR1, float_muladd_negate_c|float_muladd_negate_product)
FMA_SSE_PACKED(VFMADDSUB231, OP_PTR1, OP_PTR2, OP_PTR0, float_muladd_negate_c, 0)
FMA_SSE_PACKED(VFMADDSUB213, OP_PTR1, OP_PTR0, OP_PTR2, float_muladd_negate_c, 0)
FMA_SSE_PACKED(VFMADDSUB132, OP_PTR0, OP_PTR2, OP_PTR1, float_muladd_negate_c, 0)
FMA_SSE_PACKED(VFMSUBADD231, OP_PTR1, OP_PTR2, OP_PTR0, 0, float_muladd_negate_c)
FMA_SSE_PACKED(VFMSUBADD213, OP_PTR1, OP_PTR0, OP_PTR2, 0, float_muladd_negate_c)
FMA_SSE_PACKED(VFMSUBADD132, OP_PTR0, OP_PTR2, OP_PTR1, 0, float_muladd_negate_c)
#define FP_UNPACK_SSE(uname, lname) \
static void gen_##uname(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode) \
{ \
@ -852,6 +903,7 @@ UNARY_INT_SSE(VCVTTPD2DQ, cvttpd2dq)
UNARY_INT_SSE(VCVTDQ2PS, cvtdq2ps)
UNARY_INT_SSE(VCVTPS2DQ, cvtps2dq)
UNARY_INT_SSE(VCVTTPS2DQ, cvttps2dq)
UNARY_INT_SSE(VCVTPH2PS, cvtph2ps)
static inline void gen_unary_imm_sse(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode,
@ -1868,6 +1920,20 @@ static void gen_VCVTfp2fp(DisasContext *s, CPUX86State *env, X86DecodedInsn *dec
gen_helper_cvtsd2ss, gen_helper_cvtss2sd);
}
static void gen_VCVTPS2PH(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
{
gen_unary_imm_fp_sse(s, env, decode,
gen_helper_cvtps2ph_xmm,
gen_helper_cvtps2ph_ymm);
/*
* VCVTPS2PH is the only instruction that performs an operation on a
* register source and then *stores* into memory.
*/
if (decode->op[0].has_ea) {
gen_store_sse(s, decode, decode->op[0].offset);
}
}
static void gen_VCVTSI2Sx(DisasContext *s, CPUX86State *env, X86DecodedInsn *decode)
{
int vec_len = vector_len(s, decode);

60
target/i386/tcg/fpu_helper.c
View file

@ -32,7 +32,8 @@
#define ST(n) (env->fpregs[(env->fpstt + (n)) & 7].d)
#define ST1 ST(1)
#define FPU_RC_MASK 0xc00
#define FPU_RC_SHIFT 10
#define FPU_RC_MASK (3 << FPU_RC_SHIFT)
#define FPU_RC_NEAR 0x000
#define FPU_RC_DOWN 0x400
#define FPU_RC_UP 0x800
@ -685,28 +686,26 @@ uint32_t helper_fnstcw(CPUX86State *env)
return env->fpuc;
}
static void set_x86_rounding_mode(unsigned mode, float_status *status)
{
static FloatRoundMode x86_round_mode[4] = {
float_round_nearest_even,
float_round_down,
float_round_up,
float_round_to_zero
};
assert(mode < ARRAY_SIZE(x86_round_mode));
set_float_rounding_mode(x86_round_mode[mode], status);
}
void update_fp_status(CPUX86State *env)
{
FloatRoundMode rnd_mode;
int rnd_mode;
FloatX80RoundPrec rnd_prec;
/* set rounding mode */
switch (env->fpuc & FPU_RC_MASK) {
default:
case FPU_RC_NEAR:
rnd_mode = float_round_nearest_even;
break;
case FPU_RC_DOWN:
rnd_mode = float_round_down;
break;
case FPU_RC_UP:
rnd_mode = float_round_up;
break;
case FPU_RC_CHOP:
rnd_mode = float_round_to_zero;
break;
}
set_float_rounding_mode(rnd_mode, &env->fp_status);
rnd_mode = (env->fpuc & FPU_RC_MASK) >> FPU_RC_SHIFT;
set_x86_rounding_mode(rnd_mode, &env->fp_status);
switch ((env->fpuc >> 8) & 3) {
case 0:
@ -3038,11 +3037,8 @@ void helper_xsetbv(CPUX86State *env, uint32_t ecx, uint64_t mask)
/* XXX: optimize by storing fptt and fptags in the static cpu state */
#define SSE_DAZ 0x0040
#define SSE_RC_MASK 0x6000
#define SSE_RC_NEAR 0x0000
#define SSE_RC_DOWN 0x2000
#define SSE_RC_UP 0x4000
#define SSE_RC_CHOP 0x6000
#define SSE_RC_SHIFT 13
#define SSE_RC_MASK (3 << SSE_RC_SHIFT)
#define SSE_FZ 0x8000
void update_mxcsr_status(CPUX86State *env)
@ -3051,22 +3047,8 @@ void update_mxcsr_status(CPUX86State *env)
int rnd_type;
/* set rounding mode */
switch (mxcsr & SSE_RC_MASK) {
default:
case SSE_RC_NEAR:
rnd_type = float_round_nearest_even;
break;
case SSE_RC_DOWN:
rnd_type = float_round_down;
break;
case SSE_RC_UP:
rnd_type = float_round_up;
break;
case SSE_RC_CHOP:
rnd_type = float_round_to_zero;
break;
}
set_float_rounding_mode(rnd_type, &env->sse_status);
rnd_type = (mxcsr & SSE_RC_MASK) >> SSE_RC_SHIFT;
set_x86_rounding_mode(rnd_type, &env->sse_status);
/* Set exception flags. */
set_float_exception_flags((mxcsr & FPUS_IE ? float_flag_invalid : 0) |

1
target/i386/tcg/translate.c
View file

@ -26,6 +26,7 @@
#include "tcg/tcg-op-gvec.h"
#include "exec/cpu_ldst.h"
#include "exec/translator.h"
#include "fpu/softfloat.h"
#include "exec/helper-proto.h"
#include "exec/helper-gen.h"

17
tests/tcg/i386/test-avx.c
View file

@ -28,6 +28,7 @@ typedef struct {
} TestDef;
reg_state initI;
reg_state initF16;
reg_state initF32;
reg_state initF64;
@ -221,6 +222,7 @@ static void run_all(void)
#define ARRAY_LEN(x) (sizeof(x) / sizeof(x[0]))
uint16_t val_f16[] = { 0x4000, 0xbc00, 0x44cd, 0x3a66, 0x4200, 0x7a1a, 0x4780, 0x4826 };
float val_f32[] = {2.0, -1.0, 4.8, 0.8, 3, -42.0, 5e6, 7.5, 8.3};
double val_f64[] = {2.0, -1.0, 4.8, 0.8, 3, -42.0, 5e6, 7.5};
v4di val_i64[] = {
@ -241,6 +243,12 @@ v4di indexd = {0x00000002000000efull, 0xfffffff500000010ull,
v4di gather_mem[0x20];
void init_f16reg(v4di *r)
{
memset(r, 0, sizeof(*r));
memcpy(r, val_f16, sizeof(val_f16));
}
void init_f32reg(v4di *r)
{
static int n;
@ -315,6 +323,15 @@ int main(int argc, char *argv[])
printf("Int:\n");
dump_regs(&initI);
init_all(&initF16);
init_f16reg(&initF16.ymm[10]);
init_f16reg(&initF16.ymm[11]);
init_f16reg(&initF16.ymm[12]);
init_f16reg(&initF16.mem0[1]);
initF16.ff = 16;
printf("F16:\n");
dump_regs(&initF16);
init_all(&initF32);
init_f32reg(&initF32.ymm[10]);
init_f32reg(&initF32.ymm[11]);

8
tests/tcg/i386/test-avx.py
View file

@ -9,6 +9,7 @@
archs = [
"SSE", "SSE2", "SSE3", "SSSE3", "SSE4_1", "SSE4_2",
"AES", "AVX", "AVX2", "AES+AVX", "VAES+AVX",
"F16C", "FMA",
]
ignore = set(["FISTTP",
@ -19,6 +20,7 @@
'vBLENDPS': 0x0f,
'CMP[PS][SD]': 0x07,
'VCMP[PS][SD]': 0x1f,
'vCVTPS2PH': 0x7,
'vDPPD': 0x33,
'vDPPS': 0xff,
'vEXTRACTPS': 0x03,
@ -221,8 +223,10 @@ def ArgGenerator(arg, op):
class InsnGenerator:
def __init__(self, op, args):
self.op = op
if op[-2:] in ["PS", "PD", "SS", "SD"]:
if op[-1] == 'S':
if op[-2:] in ["PH", "PS", "PD", "SS", "SD"]:
if op[-1] == 'H':
self.optype = 'F16'
elif op[-1] == 'S':
self.optype = 'F32'
else:
self.optype = 'F64'