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Begin enforcing memory operand requirements

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This commit is contained in:
Alexis Engelke
2019-11-02 19:21:29 +01:00
parent 32d65fbf19
commit bd6c7ceebe
4 changed files with 18 additions and 13 deletions
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4
decode.c
View File

@@ -593,9 +593,11 @@ fd_decode(const uint8_t* buffer, size_t len_sz, int mode_int, uintptr_t address,
for (int i = 0; i < 4; i++)
{
uint32_t reg_type = (desc->reg_types >> 4 * i) & 0xf;
if (reg_type == FD_RT_MEM && instr->operands[i].type != FD_OT_MEM)
return -1;
if (instr->operands[i].type != FD_OT_REG)
continue;
uint32_t reg_type = (desc->reg_types >> 4 * i) & 0xf;
if (reg_type == FD_RT_GPL && !(prefixes & PREFIX_REX) &&
instr->operands[i].size == 1 && instr->operands[i].reg >= 4)
reg_type = FD_RT_GPH;

2
fadec.h
View File

@@ -75,6 +75,8 @@ typedef enum {
FD_RT_CR = 9,
/** Debug Register DRn **/
FD_RT_DR = 10,
/** Must be a memory operand **/
FD_RT_MEM = 15,
} FdRegType;
typedef struct {

24
instrs.txt
View File

@@ -140,7 +140,7 @@
8a RM GP GP - - MOV SIZE_8
8b RM GP GP - - MOV
8c MR GP SREG - - MOV_S2G
8d RM GP GP - - LEA
8d RM GP GP - - LEA MUSTMEM
8e RM SREG GP - - MOV_G2S
8f/0 M GP - - - POP DEF64
90 NP - - - - NOP
@@ -413,10 +413,10 @@ NP.0f37 NP - - - - GETSEC
0faf RM GP GP - - IMUL2
0fb0 MR GP GP - - CMPXCHG SIZE_8 LOCK
0fb1 MR GP GP - - CMPXCHG LOCK
0fb2 RM GP GP - - LSS
0fb2 RM GP GP - - LSS MUSTMEM
0fb3 MR GP GP - - BTR LOCK
0fb4 RM GP GP - - LFS
0fb5 RM GP GP - - LGS
0fb4 RM GP GP - - LFS MUSTMEM
0fb5 RM GP GP - - LGS MUSTMEM
0fb6 RM GP GP8 - - MOVZX
0fb7 RM GP GP16 - - MOVZX
F3.0fb8 RM GP GP - - POPCNT
@@ -474,8 +474,8 @@ NP.0f29 MR XMM XMM - - SSE_MOVAPS
66.0f29 MR XMM XMM - - SSE_MOVAPD
F3.0f2a RM XMM32 GP - - SSE_CVTSI2SS
F2.0f2a RM XMM64 GP - - SSE_CVTSI2SD
NP.0f2b MR XMM XMM - - SSE_MOVNTPS
66.0f2b MR XMM XMM - - SSE_MOVNTPD
NP.0f2b MR XMM XMM - - SSE_MOVNTPS MUSTMEM
66.0f2b MR XMM XMM - - SSE_MOVNTPD MUSTMEM
F3.0f2c RM GP XMM32 - - SSE_CVTTSS2SI
F2.0f2c RM GP XMM64 - - SSE_CVTTSD2SI
F3.0f2d RM GP XMM32 - - SSE_CVTSS2SI
@@ -484,8 +484,8 @@ NP.0f2e RM XMM32 XMM32 - - SSE_UCOMISS
66.0f2e RM XMM64 XMM64 - - SSE_UCOMISD
NP.0f2f RM XMM32 XMM32 - - SSE_COMISS
66.0f2f RM XMM64 XMM64 - - SSE_COMISD
NP.0f50 RM GP XMM - - SSE_MOVMSKPS DEF64
66.0f50 RM GP XMM - - SSE_MOVMSKPD DEF64
NP.0f50 RM GP XMM - - SSE_MOVMSKPS DEF64 NOMEM
66.0f50 RM GP XMM - - SSE_MOVMSKPD DEF64 NOMEM
NP.0f51 RM XMM XMM - - SSE_SQRTPS
66.0f51 RM XMM XMM - - SSE_SQRTPD
F3.0f51 RM XMM32 XMM32 - - SSE_SQRTSS
@@ -617,7 +617,7 @@ F2.0fd0 RM XMM XMM - - SSE_ADDSUBPS
66.0fe6 RM XMM64 XMM - - SSE_CVTTPD2DQ
F3.0fe6 RM XMM XMM64 - - SSE_CVTDQ2PD
F2.0fe6 RM XMM64 XMM - - SSE_CVTPD2DQ
66.0fe7 MR XMM XMM - - SSE_MOVNTDQ
66.0fe7 MR XMM XMM - - SSE_MOVNTDQ MUSTMEM
66.0fe8 RM XMM XMM - - SSE_PSUBSB
66.0fe9 RM XMM XMM - - SSE_PSUBSW
66.0feb RM XMM XMM - - SSE_POR
@@ -626,14 +626,14 @@ F2.0fe6 RM XMM64 XMM - - SSE_CVTPD2DQ
66.0fee RM XMM XMM - - SSE_PMAXSW
66.0fed RM XMM XMM - - SSE_PADDSW
66.0fef RM XMM XMM - - SSE_PXOR
F2.0ff0 RM XMM XMM - - SSE_LDDQU
F2.0ff0 RM XMM XMM - - SSE_LDDQU MUSTMEM
66.0ff1 RM XMM XMM - - SSE_PSLLW
66.0ff2 RM XMM XMM - - SSE_PSLLD
66.0ff3 RM XMM XMM - - SSE_PSLLQ
66.0ff4 RM XMM XMM - - SSE_PMULUDQ
66.0ff5 RM XMM XMM - - SSE_PMADDWD
66.0ff6 RM XMM XMM - - SSE_PSADBW
66.0ff7 RM XMM XMM - - SSE_MASKMOVDQU
66.0ff7 RM XMM XMM - - SSE_MASKMOVDQU NOMEM
66.0ff8 RM XMM XMM - - SSE_PSUBB
66.0ff9 RM XMM XMM - - SSE_PSUBW
66.0ffa RM XMM XMM - - SSE_PSUBD
@@ -669,7 +669,7 @@ F2.0ff0 RM XMM XMM - - SSE_LDDQU
66.0f3825 RM XMM XMM - - SSE_PMOVSXDQ
66.0f3828 RM XMM XMM - - SSE_PMULDQ
66.0f3829 RM XMM XMM - - SSE_PCMPEQQ
66.0f382a RM XMM XMM - - SSE_MOVNTDQA
66.0f382a RM XMM XMM - - SSE_MOVNTDQA MUSTMEM
66.0f382b RM XMM XMM - - SSE_PACKUSDW
66.0f3830 RM XMM XMM - - SSE_PMOVZXBW
66.0f3831 RM XMM XMM - - SSE_PMOVZXBD

1
parseinstrs.py
View File

@@ -126,6 +126,7 @@ class InstrDesc(namedtuple("InstrDesc", "mnemonic,flags,encoding")):
if "IMM_8" in desc[6:]: flags.imm_byte = 1
if "LOCK" in desc[6:]: flags.lock = 1
if "VSIB" in desc[6:]: flags.vsib = 1
if "MUSTMEM" in desc[6:]: flags.reg_types |= 15 << 4*(flags.modrm_idx^3)
return cls(desc[5], frozenset(desc[6:]), flags._encode(6))
def encode(self, mnemonics_lut):