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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

86
libc/log/oncrash.c
View file

@ -32,9 +32,9 @@
#include "libc/runtime/internal.h"
#include "libc/runtime/memtrack.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/auxv.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/sig.h"
@ -49,17 +49,17 @@ STATIC_YOINK("stoa");
struct siginfo;
aligned(1) const char kGregOrder[17] = {
const char kGregOrder[17] aligned(1) = {
13, 11, 8, 14, 12, 9, 10, 15, 16, 0, 1, 2, 3, 4, 5, 6, 7,
};
aligned(1) const char kGregNames[17][4] = {
const char kGregNames[17][4] aligned(1) = {
"R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15", "RDI",
"RSI", "RBP", "RBX", "RDX", "RAX", "RCX", "RSP", "RIP",
};
aligned(1) const char kGodHatesFlags[12] = "CVPRAKZSTIDO";
aligned(1) const char kCrashSigNames[8][5] = {"QUIT", "FPE", "ILL", "SEGV",
const char kGodHatesFlags[12] aligned(1) = "CVPRAKZSTIDO";
const char kCrashSigNames[8][5] aligned(1) = {"QUIT", "FPE", "ILL", "SEGV",
"TRAP", "ABRT", "BUS"};
int kCrashSigs[8];
@ -75,60 +75,60 @@ relegated static const char *TinyStrSignal(int sig) {
return "???";
}
relegated static void ShowFunctionCalls(FILE *f, ucontext_t *ctx) {
relegated static void ShowFunctionCalls(int fd, ucontext_t *ctx) {
struct StackFrame *bp;
struct StackFrame goodframe;
fputc('\n', f);
write(fd, "\r\n", 2);
if (ctx && ctx->uc_mcontext.rip && ctx->uc_mcontext.rbp) {
goodframe.next = (struct StackFrame *)ctx->uc_mcontext.rbp;
goodframe.addr = ctx->uc_mcontext.rip;
bp = &goodframe;
showbacktrace(f, bp);
ShowBacktrace(fd, bp);
}
}
relegated static void DescribeCpuFlags(FILE *f, unsigned efl) {
size_t i;
relegated static void DescribeCpuFlags(int fd, unsigned flags) {
unsigned i;
char buf[64], *p;
p = buf;
for (i = 0; i < ARRAYLEN(kGodHatesFlags); ++i) {
if (efl & 1) {
fputc(' ', f);
fputc(kGodHatesFlags[i], f);
fputc('F', f);
if (flags & 1) {
*p++ = ' ';
*p++ = kGodHatesFlags[i];
*p++ = 'F';
}
efl >>= 1;
flags >>= 1;
}
(fprintf)(f, " %s%d\n", "IOPL", efl & 3);
p = stpcpy(p, " IOPL");
*p++ = '0' + (flags & 3);
write(fd, buf, p - buf);
}
relegated static void ShowGeneralRegisters(FILE *f, ucontext_t *ctx) {
relegated static void ShowGeneralRegisters(int fd, ucontext_t *ctx) {
size_t i, j, k;
long double st;
fputc('\n', f);
write(fd, "\r\n", 2);
for (i = 0, j = 0, k = 0; i < ARRAYLEN(kGregNames); ++i) {
if (j > 0) {
fputc(' ', f);
}
(fprintf)(f, "%-3s %016lx", kGregNames[(unsigned)kGregOrder[i]],
if (j > 0) write(fd, " ", 1);
(dprintf)(fd, "%-3s %016lx", kGregNames[(unsigned)kGregOrder[i]],
ctx->uc_mcontext.gregs[(unsigned)kGregOrder[i]]);
if (++j == 3) {
j = 0;
memcpy(&st, (char *)&ctx->fpustate.st[k], sizeof(st));
(fprintf)(f, " %s(%zu) %Lf", "ST", k, st);
(dprintf)(fd, " %s(%zu) %Lf", "ST", k, st);
++k;
fputc('\r', f);
fputc('\n', f);
write(fd, "\r\n", 2);
}
}
fflush(stderr);
DescribeCpuFlags(f, ctx->uc_mcontext.gregs[REG_EFL]);
DescribeCpuFlags(fd, ctx->uc_mcontext.gregs[REG_EFL]);
}
relegated static void ShowSseRegisters(FILE *f, ucontext_t *ctx) {
relegated static void ShowSseRegisters(int fd, ucontext_t *ctx) {
size_t i;
fputc('\n', f);
write(fd, "\r\n", 2);
for (i = 0; i < 8; ++i) {
(fprintf)(f, VEIL("r", "%s%-2zu %016lx%016lx %s%-2d %016lx%016lx\n"), "XMM",
i + 0, ctx->fpustate.xmm[i + 0].u64[0],
(dprintf)(fd, VEIL("r", "%s%-2zu %016lx%016lx %s%-2d %016lx%016lx\r\n"),
"XMM", i + 0, ctx->fpustate.xmm[i + 0].u64[0],
ctx->fpustate.xmm[i + 0].u64[1], "XMM", i + 8,
ctx->fpustate.xmm[i + 8].u64[0], ctx->fpustate.xmm[i + 8].u64[1]);
}
@ -149,23 +149,23 @@ relegated static void ShowMemoryMappings(int outfd) {
}
}
relegated static void ShowCrashReport(int err, FILE *f, int sig,
relegated static void ShowCrashReport(int err, int fd, int sig,
ucontext_t *ctx) {
struct utsname names;
(fprintf)(f, VEIL("r", "\n%serror%s: Uncaught SIG%s\n %s\n %s\n"), RED2,
RESET, TinyStrSignal(sig), getauxval(AT_EXECFN), strerror(err));
(dprintf)(fd, VEIL("r", "\r\n%serror%s: Uncaught SIG%s\r\n %s\r\n %s\r\n"),
RED2, RESET, TinyStrSignal(sig), getauxval(AT_EXECFN),
strerror(err));
if (uname(&names) != -1) {
(fprintf)(f, VEIL("r", " %s %s %s %s\n"), names.sysname, names.nodename,
(dprintf)(fd, VEIL("r", " %s %s %s %s\r\n"), names.sysname, names.nodename,
names.release, names.version);
}
ShowFunctionCalls(f, ctx);
ShowFunctionCalls(fd, ctx);
if (ctx) {
ShowGeneralRegisters(f, ctx);
ShowSseRegisters(f, ctx);
ShowGeneralRegisters(fd, ctx);
ShowSseRegisters(fd, ctx);
}
fputc('\n', f);
fflush(f);
ShowMemoryMappings(fileno(f));
write(fd, "\r\n", 2);
ShowMemoryMappings(fd);
}
relegated static void RestoreDefaultCrashSignalHandlers(void) {
@ -215,7 +215,7 @@ relegated void oncrash(int sig, struct siginfo *si, ucontext_t *ctx) {
: 0);
}
if (gdbpid > 0 && (sig == SIGTRAP || sig == SIGQUIT)) return;
ShowCrashReport(err, stderr, sig, ctx);
quick_exit(128 + sig);
ShowCrashReport(err, STDERR_FILENO, sig, ctx);
exit(128 + sig);
unreachable;
}