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Tweaks to generated code, should reduce size slightly.

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This commit is contained in:
TomW 2015-04-11 16:06:50 +01:00
commit 6caeca2c7c
3 changed files with 201 additions and 107 deletions
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5
src/codegen_x86.c
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@ -208,9 +208,11 @@ void codegen_block_init(uint32_t phys_addr)
addbyte(0x83); /*ADDL $16,%esp*/
addbyte(0xC4);
addbyte(0x10);
addbyte(0x5d); /*POP EBP*/
addbyte(0xC3); /*RET*/
cpu_block_end = 0;
block_pos = 0; /*Entry code*/
addbyte(0x55); /*PUSH EBP*/
addbyte(0x83); /*SUBL $16,%esp*/
addbyte(0xEC);
addbyte(0x10);
@ -370,6 +372,7 @@ void codegen_block_end()
addbyte(0x83); /*ADDL $16,%esp*/
addbyte(0xC4);
addbyte(0x10);
addbyte(0x5d); /*POP EBP*/
addbyte(0xC3); /*RET*/
if (block_pos > BLOCK_GPF_OFFSET)
@ -799,6 +802,8 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
generate_call:
codegen_timing_opcode(opcode, fetchdat, op_32);
addbyte(0xBD); /*MOVL EBP, &EAX*/
addlong((uint32_t)&EAX);
if (op_table == x86_dynarec_opcodes && recomp_opcodes[(opcode | op_32) & 0x1ff])
{
uint32_t new_pc = recomp_opcodes[(opcode | op_32) & 0x1ff](opcode, fetchdat, op_32, op_pc, block);