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Add help dialog to Blinkenlights emulator

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This commit is contained in:
Justine Tunney
2021-02-19 16:56:06 -08:00
parent 02b4a5c824
commit 5f1415af3a
9 changed files with 248 additions and 147 deletions
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7
tool/build/lib/debug.c
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@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/stat.h"
#include "libc/elf/elf.h"
#include "libc/log/check.h"
#include "libc/runtime/gc.h"
#include "libc/sysv/consts/map.h"
@ -28,13 +29,15 @@
void LoadDebugSymbols(struct Elf *elf) {
int fd;
size_t n;
void *elfmap;
struct stat st;
const char *path;
if (elf->ehdr) return;
if (elf->ehdr && GetElfSymbolTable(elf->ehdr, elf->size, &n) && n) return;
DCHECK_NOTNULL(elf->prog);
fprintf(stderr, "HI %s\n", elf->prog);
if ((fd = open(gc(xstrcat(elf->prog, ".dbg")), O_RDONLY)) != -1 ||
(fd = open(elf->prog, O_RDONLY))) {
(fd = open(elf->prog, O_RDONLY)) != -1) {
if (fstat(fd, &st) != -1 &&
(elfmap = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0)) !=
MAP_FAILED) {