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Added jmp_ptr() to ujit_asm.h

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Maxime Chevalier-Boisvert 2020-09-30 13:32:15 -04:00
parent 08832a9f59
commit d7b97ff327
2 changed files with 7 additions and 18 deletions
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24
ujit_asm.c
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@ -823,7 +823,8 @@ void cb_write_jcc_ptr(codeblock_t* cb, const char* mnem, uint8_t op0, uint8_t op
//cb.writeASM(mnem, label);
// Write the opcode
cb_write_byte(cb, op0);
if (op0 != 0xFF)
cb_write_byte(cb, op0);
cb_write_byte(cb, op1);
// Pointer to the end of this jump
@ -1101,7 +1102,7 @@ void inc(codeblock_t* cb, x86opnd_t opnd)
);
}
/// jcc - Conditional relative jump to a label
/// jcc - relative jumps to a label
void ja (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "ja" , 0x0F, 0x87, label_idx); }
void jae (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "jae" , 0x0F, 0x83, label_idx); }
void jb (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "jb" , 0x0F, 0x82, label_idx); }
@ -1132,8 +1133,9 @@ void jpe (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "jpe" , 0x0F, 0x
void jpo (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "jpo" , 0x0F, 0x8B, label_idx); }
void js (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "js" , 0x0F, 0x88, label_idx); }
void jz (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "jz" , 0x0F, 0x84, label_idx); }
void jmp (codeblock_t* cb, size_t label_idx) { cb_write_jcc(cb, "jmp" , 0xFF, 0xE9, label_idx); }
/// jcc - Conditional relative jump to a pointer (32-bit offset)
/// jcc - relative jumps to a pointer (32-bit offset)
void ja_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "ja" , 0x0F, 0x87, ptr); }
void jae_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "jae" , 0x0F, 0x83, ptr); }
void jb_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "jb" , 0x0F, 0x82, ptr); }
@ -1164,21 +1166,7 @@ void jpe_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "jpe" , 0x0F
void jpo_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "jpo" , 0x0F, 0x8B, ptr); }
void js_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "js" , 0x0F, 0x88, ptr); }
void jz_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "jz" , 0x0F, 0x84, ptr); }
/// jmp - Direct relative jump to label
void jmp(codeblock_t* cb, size_t label_idx)
{
//cb.writeASM(mnem, label);
/// Opcode for direct jump with relative 32-bit offset
cb_write_byte(cb, 0xE9);
// Add a reference to the label
cb_label_ref(cb, label_idx);
// Relative 32-bit offset to be patched
cb_write_int(cb, 0, 32);
}
void jmp_ptr (codeblock_t* cb, uint8_t* ptr) { cb_write_jcc_ptr(cb, "jmp" , 0xFF, 0xE9, ptr); }
/// jmp - Indirect jump near to an R/M operand
void jmp_rm(codeblock_t* cb, x86opnd_t opnd)

1
ujit_asm.h
View file

@ -333,6 +333,7 @@ void jpo_ptr(codeblock_t* cb, uint8_t* ptr);
void js_ptr(codeblock_t* cb, uint8_t* ptr);
void jz_ptr(codeblock_t* cb, uint8_t* ptr);
void jmp(codeblock_t* cb, size_t label_idx);
void jmp_ptr(codeblock_t* cb, uint8_t* ptr);
void jmp_rm(codeblock_t* cb, x86opnd_t opnd);
void jmp32(codeblock_t* cb, int32_t offset);
void lea(codeblock_t* cb, x86opnd_t dst, x86opnd_t src);