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Move GPF and early exit routines out of individual code blocks and into the common helper block.

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This commit is contained in:
SarahW 2019-01-13 12:57:32 +00:00
commit 8998024225
21 changed files with 213 additions and 213 deletions
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56
src/codegen_backend_x86-64.c
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@ -31,6 +31,9 @@ void *codegen_mem_store_quad;
void *codegen_mem_store_single;
void *codegen_mem_store_double;
void *codegen_gpf_rout;
void *codegen_exit_rout;
int codegen_host_reg_list[CODEGEN_HOST_REGS] =
{
REG_EAX,
@ -49,8 +52,6 @@ int codegen_host_fp_reg_list[CODEGEN_HOST_FP_REGS] =
REG_XMM6
};
static void *mem_abrt_rout;
static void build_load_routine(codeblock_t *block, int size, int is_float)
{
uint8_t *branch_offset;
@ -274,6 +275,7 @@ static void build_loadstore_routines(codeblock_t *block)
void codegen_backend_init()
{
codeblock_t *block;
int c;
#if defined(__linux__) || defined(__APPLE__)
void *start;
@ -295,10 +297,33 @@ void codegen_backend_init()
block_current = 0;
block_pos = 0;
block = &codeblock[block_current];
codeblock[block_current].head_mem_block = codegen_allocator_allocate(NULL);
codeblock[block_current].data = codeblock_allocator_get_ptr(codeblock[block_current].head_mem_block);
block_write_data = codeblock[block_current].data;
build_loadstore_routines(&codeblock[block_current]);
codegen_gpf_rout = &codeblock[block_current].data[block_pos];
#if WIN64
host_x86_XOR32_REG_REG(block, REG_ECX, REG_ECX, REG_ECX);
host_x86_XOR32_REG_REG(block, REG_EDX, REG_EDX, REG_EDX);
#else
host_x86_XOR32_REG_REG(block, REG_EDI, REG_EDI, REG_EDI);
host_x86_XOR32_REG_REG(block, REG_ESI, REG_ESI, REG_ESI);
#endif
host_x86_CALL(block, (uintptr_t)x86gpf);
codegen_exit_rout = &codeblock[block_current].data[block_pos];
host_x86_ADD32_REG_IMM(block, REG_ESP, REG_ESP, 0x38);
host_x86_POP(block, REG_R15);
host_x86_POP(block, REG_R14);
host_x86_POP(block, REG_R13);
host_x86_POP(block, REG_R12);
host_x86_POP(block, REG_RDI);
host_x86_POP(block, REG_RSI);
host_x86_POP(block, REG_RBP);
host_x86_POP(block, REG_RDX);
host_x86_RET(block);
block_write_data = NULL;
asm(
@ -315,33 +340,6 @@ void codegen_set_rounding_mode(int mode)
void codegen_backend_prologue(codeblock_t *block)
{
block_pos = BLOCK_GPF_OFFSET;
#if WIN64
host_x86_XOR32_REG_REG(block, REG_ECX, REG_ECX, REG_ECX);
host_x86_XOR32_REG_REG(block, REG_EDX, REG_EDX, REG_EDX);
#else
host_x86_XOR32_REG_REG(block, REG_EDI, REG_EDI, REG_EDI);
host_x86_XOR32_REG_REG(block, REG_ESI, REG_ESI, REG_ESI);
#endif
host_x86_CALL(block, (uintptr_t)x86gpf);
while (block_pos < BLOCK_EXIT_OFFSET)
host_x86_NOP(block);
if (block_pos > BLOCK_EXIT_OFFSET)
fatal("block_pos > BLOCK_EXIT_OFFSET\n");
block_pos = BLOCK_EXIT_OFFSET; /*Exit code*/
host_x86_ADD32_REG_IMM(block, REG_ESP, REG_ESP, 0x38);
host_x86_POP(block, REG_R15);
host_x86_POP(block, REG_R14);
host_x86_POP(block, REG_R13);
host_x86_POP(block, REG_R12);
host_x86_POP(block, REG_RDI);
host_x86_POP(block, REG_RSI);
host_x86_POP(block, REG_RBP);
host_x86_POP(block, REG_RDX);
host_x86_RET(block);
if (block_pos > BLOCK_START)
fatal("block_pos > BLOCK_START\n");
block_pos = BLOCK_START; /*Entry code*/
host_x86_PUSH(block, REG_RBX);
host_x86_PUSH(block, REG_RBP);