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gb6
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slight clean up

This commit is contained in:
Matthew Laux 2023-10-18 19:38:10 -05:00
parent f9f199dad2
commit d69a3b35f1
1 changed files with 14 additions and 13 deletions
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27
src/compiler68k.c
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@ -2,7 +2,8 @@
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/mman.h>
#include <sys/mman.h> // mprotect
#include <unistd.h> // getpagesize
// A -> D0
// BC -> D1
@ -49,22 +50,10 @@ struct basic_block *compile_block(uint16_t src_address, uint8_t *gb_code)
struct basic_block *bblock;
uint32_t dst_ptr = 0;
uint16_t src_ptr = 0;
int ret;
printf("compile block starting at 0x%04x\n", src_address);
bblock = malloc(sizeof *bblock);
// for testing...
ret = mprotect(
(void *) ((uint64_t) bblock & 0xfffffffffffff000L),
4096,
PROT_READ | PROT_WRITE | PROT_EXEC
);
if (ret == -1) {
perror("mprotect");
exit(0);
}
// bblock->code = out_code + start;
while (1) {
@ -112,6 +101,7 @@ void run_all(uint8_t *gb_code)
{
struct basic_block *bblock;
uint16_t jump_target = 0;
int page_size, ret;
while (1) {
bblock = block_cache_get(jump_target);
@ -123,6 +113,17 @@ void run_all(uint8_t *gb_code)
block_cache_add(jump_target, bblock);
}
// for testing...
page_size = getpagesize();
ret = mprotect(
(void *) ((uint64_t) bblock & ~(page_size - 1)),
page_size,
PROT_READ | PROT_WRITE | PROT_EXEC
);
if (ret == -1) {
perror("mprotect");
exit(0);
}
jump_target = ((uint16_t (*)()) bblock->code)();
}
}