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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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4
decode.c
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@@ -508,6 +508,8 @@ prefix_end:
imm_size = 1;
else if (UNLIKELY(instr->type == FDI_RET || instr->type == FDI_RETF))
imm_size = 2;
else if (UNLIKELY(desc->type == FDI_JMPF || desc->type == FDI_CALLF))
imm_size = op_size + 2;
else if (UNLIKELY(instr->type == FDI_ENTER))
imm_size = 3;
else if (instr->type == FDI_MOVABS)
@@ -526,6 +528,8 @@ prefix_end:
instr->imm = LOAD_LE_3(&buffer[off]);
else if (imm_size == 4)
instr->imm = (int32_t) LOAD_LE_4(&buffer[off]);
else if (imm_size == 6)
instr->imm = LOAD_LE_4(&buffer[off]) | LOAD_LE_2(&buffer[off+4]) << 32;
else if (imm_size == 8)
instr->imm = (int64_t) LOAD_LE_8(&buffer[off]);
off += imm_size;