diff options
| -rw-r--r-- | lib.s | 14 | ||||
| -rw-r--r-- | mips.c | 1 | ||||
| -rw-r--r-- | semantics.c | 3 |
3 files changed, 18 insertions, 0 deletions
@@ -153,3 +153,17 @@ _func_malloc: li $2, 9 syscall jr $31 +_func_memcpy: # the copied mem must be 4-aligned + lw $8, 0($sp) # dest addr + lw $9, 4($sp) # src addr + lw $10, 8($sp) # size + j __COND +__LOOP: + lw $2, 0($9) + sw $2, 0($8) + addiu $8, $8, 4 + addiu $9, $9, 4 + addiu $10, $10, -4 +__COND: + bnez $10, __LOOP + jr $31 @@ -54,6 +54,7 @@ void mips_prologue() { else printf("\t.space %d\n", calc_size(var->type)); } + printf("\t.align 2\n"); for (s = cstrs; s; s = s->next) { printf("_str_%d:\n", s->id); diff --git a/semantics.c b/semantics.c index bbed137..77d4b54 100644 --- a/semantics.c +++ b/semantics.c @@ -59,6 +59,7 @@ static CType_t basic_type_void; static CType_t builtin_printf; static CType_t builtin_scanf; static CType_t builtin_malloc; +static CType_t builtin_memcpy; static CType_t builtin_print_int; static CType_t builtin_print_char; static CType_t builtin_print_string; @@ -1874,6 +1875,7 @@ void semantics_check(CNode *p) { builtin_print_int = make_builtin_func("__print_int", basic_type_int); builtin_print_char = make_builtin_func("__print_char", basic_type_int); builtin_print_string = make_builtin_func("__print_string", basic_type_int); + builtin_memcpy = make_builtin_func("memcpy", basic_type_void); { CType_t vstar = ctype_create("", CPTR, NULL); vstar->rec.ref = basic_type_void; @@ -1886,6 +1888,7 @@ void semantics_check(CNode *p) { cscope_push_type(scope, builtin_printf, NS_ID); cscope_push_type(scope, builtin_scanf, NS_ID); cscope_push_type(scope, builtin_malloc, NS_ID); + cscope_push_type(scope, builtin_memcpy, NS_ID); cscope_push_type(scope, builtin_print_int, NS_ID); cscope_push_type(scope, builtin_print_char, NS_ID); cscope_push_type(scope, builtin_print_string, NS_ID); |