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instrs: Support far jumps/calls encoded target

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This commit is contained in:
Alexis Engelke
2021-01-10 12:31:07 +01:00
parent 2f295e5476
commit dd4263b169
4 changed files with 50 additions and 9 deletions
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26
format.c
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@@ -178,7 +178,7 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
case 8: mnemonic = "jrcxz"; break;
}
break;
case FDI_ENTER:
case FDI_ENTER: {
buf = fd_strplcpy(buf, mnemonic, end-buf);
if (FD_OPSIZE(instr) == 2)
buf = fd_strplcpy(buf, "w", end-buf);
@@ -194,6 +194,28 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
*--fmt = ',';
buf = fd_strplcpy(buf, fmt, end-buf);
return;
}
case FDI_JMPF:
case FDI_CALLF:
if (FD_OP_TYPE(instr, 0) == FD_OT_IMM) {
buf = fd_strplcpy(buf, mnemonic, end-buf);
uint32_t tgt = FD_OP_IMM(instr, 0) & 0xffffffff;
if (FD_OP_SIZE(instr, 0) == 2)
tgt &= 0xffff;
unsigned seg = FD_OP_IMM(instr, 0) >> 8*FD_OP_SIZE(instr, 0);
char* fmt = fd_format_hex(seg & 0xffff, tmp + 3);
*--fmt = 'x';
*--fmt = '0';
*--fmt = ' ';
buf = fd_strplcpy(buf, fmt, end-buf);
fmt = fd_format_hex(tgt, tmp + 3);
*--fmt = 'x';
*--fmt = '0';
*--fmt = ':';
buf = fd_strplcpy(buf, fmt, end-buf);
return;
}
break;
case FDI_PUSH:
if (FD_OP_SIZE(instr, 0) == 2 && FD_OP_TYPE(instr, 0) == FD_OT_IMM)
sizesuffix[0] = 'w';
@@ -275,7 +297,7 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
case FDI_LFS:
case FDI_LGS:
case FDI_LSS:
size = 6;
size += 2;
break;
case FDI_FLD:
case FDI_FSTP: