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Make terminal ui binaries work well everywhere

Browse source 
Here's some screenshots of an emulator tui program that was compiled on
Linux, then scp'd it to Windows, Mac, and FreeBSD.

https://justine.storage.googleapis.com/blinkenlights-cmdexe.png
https://justine.storage.googleapis.com/blinkenlights-imac.png
https://justine.storage.googleapis.com/blinkenlights-freebsd.png
https://justine.storage.googleapis.com/blinkenlights-lisp.png

How is this even possible that we have a nontrivial ui binary that just
works on Mac, Windows, Linux, and BSD? Surely a first ever achievement.

Fixed many bugs. Bootstrapped John McCarthy's metacircular evaluator on
bare metal in half the size of Altair BASIC (about 2.5kb) and ran it in
emulator for fun and profit.
This commit is contained in:
Justine Tunney 2020-10-10 21:18:53 -07:00
parent 680daf1210
commit 9e3e985ae5
276 changed files with 7026 additions and 3790 deletions
Download patch file Download diff file Expand all files Collapse all files

20
libc/log/backtrace2.c
View file

@ -31,14 +31,13 @@
#include "libc/nexgen32e/gc.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/symbols.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/fileno.h"
#define kBacktraceMaxFrames 128
#define kBacktraceBufSize ((kBacktraceMaxFrames - 1) * (16 + 1))
static int PrintBacktraceUsingAddr2line(FILE *f, const struct StackFrame *bp) {
static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
ssize_t got;
intptr_t addr;
size_t i, j, gi;
@ -47,7 +46,7 @@ static int PrintBacktraceUsingAddr2line(FILE *f, const struct StackFrame *bp) {
const struct StackFrame *frame;
const char *debugbin, *p1, *p2, *p3, *addr2line;
char buf[kBacktraceBufSize], *argv[kBacktraceMaxFrames];
if (!(debugbin = finddebugbinary()) || !(addr2line = GetAddr2linePath())) {
if (!(debugbin = FindDebugBinary()) || !(addr2line = GetAddr2linePath())) {
return -1;
}
i = 0;
@ -88,11 +87,11 @@ static int PrintBacktraceUsingAddr2line(FILE *f, const struct StackFrame *bp) {
strlen(" (discriminator ") - 1)) &&
(p3 = memchr(p2, '\n', got - (p2 - p1)))) {
if (p3 > p2 && p3[-1] == '\r') --p3;
fwrite(p1, 1, p2 - p1, f);
write(fd, p1, p2 - p1);
got -= p3 - p1;
p1 += p3 - p1;
} else {
fwrite(p1, 1, got, f);
write(fd, p1, got);
break;
}
}
@ -103,20 +102,21 @@ static int PrintBacktraceUsingAddr2line(FILE *f, const struct StackFrame *bp) {
return 0;
}
static int PrintBacktrace(FILE *f, const struct StackFrame *bp) {
static int PrintBacktrace(int fd, const struct StackFrame *bp) {
if (!IsTiny()) {
if (PrintBacktraceUsingAddr2line(f, bp) != -1) {
if (PrintBacktraceUsingAddr2line(fd, bp) != -1) {
return 0;
}
}
return PrintBacktraceUsingSymbols(f, bp, getsymboltable());
return PrintBacktraceUsingSymbols(fd, bp, GetSymbolTable());
}
void showbacktrace(FILE *f, const struct StackFrame *bp) {
void ShowBacktrace(int fd, const struct StackFrame *bp) {
static bool noreentry;
if (!bp) bp = __builtin_frame_address(0);
if (!noreentry) {
noreentry = true;
PrintBacktrace(f, bp);
PrintBacktrace(fd, bp);
noreentry = 0;
}
}