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rtasm: propogate errors in x86 emit

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This commit is contained in:
Keith Whitwell 2008-04-21 19:09:38 +01:00
parent 65efe807b9
commit b17e123a8f
2 changed files with 30 additions and 5 deletions
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34
src/gallium/auxiliary/rtasm/rtasm_x86sse.c
View file

@ -146,7 +146,10 @@ _fill(
static void do_realloc( struct x86_function *p )
{
if (p->size == 0) {
if (p->store == p->error_overflow) {
p->csr = p->store;
}
else if (p->size == 0) {
p->size = 1024;
p->store = rtasm_exec_malloc(p->size);
p->csr = p->store;
@ -156,10 +159,22 @@ static void do_realloc( struct x86_function *p )
unsigned char *tmp = p->store;
p->size *= 2;
p->store = rtasm_exec_malloc(p->size);
memcpy(p->store, tmp, used);
p->csr = p->store + used;
if (p->store) {
memcpy(p->store, tmp, used);
p->csr = p->store + used;
}
else {
p->csr = p->store;
}
rtasm_exec_free(tmp);
}
if (p->store == NULL) {
p->store = p->csr = p->error_overflow;
p->size = 4;
}
}
/* Emit bytes to the instruction stream:
@ -1440,12 +1455,17 @@ void x86_init_func_size( struct x86_function *p, unsigned code_size )
{
p->size = code_size;
p->store = rtasm_exec_malloc(code_size);
if (p->store == NULL) {
p->store = p->error_overflow;
}
p->csr = p->store;
}
void x86_release_func( struct x86_function *p )
{
rtasm_exec_free(p->store);
if (p->store && p->store != p->error_overflow)
rtasm_exec_free(p->store);
p->store = NULL;
p->csr = NULL;
p->size = 0;
@ -1456,7 +1476,11 @@ void (*x86_get_func( struct x86_function *p ))(void)
{
if (DISASSEM && p->store)
debug_printf("disassemble %p %p\n", p->store, p->csr);
return (void (*)(void)) p->store;
if (p->store == p->error_overflow)
return (void (*)(void)) NULL;
else
return (void (*)(void)) p->store;
}
#else

1
src/gallium/auxiliary/rtasm/rtasm_x86sse.h
View file

@ -43,6 +43,7 @@ struct x86_function {
unsigned char *csr;
unsigned stack_offset;
int need_emms;
unsigned char error_overflow[4];
const char *fn;
};