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x86-32 recompiler compiles FPU instructions using direct access to register stack when top-of-stack is static. Minor speedup.

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This commit is contained in:
SarahW 2016-09-11 15:38:05 +01:00
commit 75f9316c11
5 changed files with 1395 additions and 785 deletions
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13
src/codegen_x86.c
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@ -281,6 +281,7 @@ void codegen_block_init(uint32_t phys_addr)
block->next = block->prev = NULL;
block->next_2 = block->prev_2 = NULL;
block->page_mask = 0;
block->flags = CODEBLOCK_STATIC_TOP;
block->was_recompiled = 0;
@ -359,6 +360,7 @@ void codegen_block_start_recompile(codeblock_t *block)
_ds.checked = _es.checked = _fs.checked = _gs.checked = (cr0 & 1) ? 0 : 1;
block->TOP = cpu_state.TOP;
block->was_recompiled = 1;
}
@ -484,6 +486,9 @@ void codegen_block_end_recompile(codeblock_t *block)
codegen_block_generate_end_mask();
add_to_block_list(block);
// pclog("End block %i\n", block_num);
if (!(block->flags & CODEBLOCK_HAS_FPU))
block->flags &= ~CODEBLOCK_STATIC_TOP;
}
void codegen_flush()
@ -821,6 +826,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xd9:
op_table = (op_32 & 0x200) ? x86_dynarec_opcodes_d9_a32 : x86_dynarec_opcodes_d9_a16;
@ -829,6 +835,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xda:
op_table = (op_32 & 0x200) ? x86_dynarec_opcodes_da_a32 : x86_dynarec_opcodes_da_a16;
@ -837,6 +844,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xdb:
op_table = (op_32 & 0x200) ? x86_dynarec_opcodes_db_a32 : x86_dynarec_opcodes_db_a16;
@ -845,6 +853,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xdc:
op_table = (op_32 & 0x200) ? x86_dynarec_opcodes_dc_a32 : x86_dynarec_opcodes_dc_a16;
@ -854,6 +863,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xdd:
op_table = (op_32 & 0x200) ? x86_dynarec_opcodes_dd_a32 : x86_dynarec_opcodes_dd_a16;
@ -862,6 +872,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xde:
op_table = (op_32 & 0x200) ? x86_dynarec_opcodes_de_a32 : x86_dynarec_opcodes_de_a16;
@ -870,6 +881,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xdf:
op_table = (op_32 & 0x200) ? x86_dynarec_opcodes_df_a32 : x86_dynarec_opcodes_df_a16;
@ -878,6 +890,7 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
over = 1;
pc_off = -1;
test_modrm = 0;
block->flags |= CODEBLOCK_HAS_FPU;
break;
case 0xf0: /*LOCK*/