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Add atomics to chibicc

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This change also fixes #434 and makes the chibicc assembler better.
This commit is contained in:
Justine Tunney 2022-06-20 03:08:00 -07:00
parent 5ddf43332e
commit a988896048
21 changed files with 650 additions and 445 deletions
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5
tool/build/lib/elfwriter.c
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@ -164,9 +164,7 @@ struct ElfWriter *elfwriter_open(const char *path, int mode) {
struct ElfWriter *elf;
CHECK_NOTNULL((elf = calloc(1, sizeof(struct ElfWriter))));
CHECK_NOTNULL((elf->path = strdup(path)));
CHECK_NE(-1, asprintf(&elf->tmppath, "%s.%d", elf->path, getpid()));
CHECK_NE(-1, (elf->fd = open(elf->tmppath,
O_CREAT | O_TRUNC | O_RDWR | O_EXCL, mode)));
CHECK_NE(-1, (elf->fd = open(elf->path, O_CREAT | O_TRUNC | O_RDWR, mode)));
CHECK_NE(-1, ftruncate(elf->fd, (elf->mapsize = FRAMESIZE)));
CHECK_NE(MAP_FAILED, (elf->map = mmap((void *)(intptr_t)kFixedmapStart,
elf->mapsize, PROT_READ | PROT_WRITE,
@ -187,7 +185,6 @@ void elfwriter_close(struct ElfWriter *elf) {
CHECK_NE(-1, munmap(elf->map, elf->mapsize));
CHECK_NE(-1, ftruncate(elf->fd, elf->wrote));
CHECK_NE(-1, close(elf->fd));
CHECK_NE(-1, rename(elf->tmppath, elf->path));
freeinterner(elf->shstrtab);
freeinterner(elf->strtab);
free(elf->shdrs->p);