mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-28 22:18:29 +00:00
15ea0524b3
This change reduces o/tiny/examples/life from 44kb to 24kb in size since it avoids linking mmap() when unnecessary. This is important, to helping cosmo not completely lose touch with its roots.
116 lines
5.3 KiB
C
116 lines
5.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2024 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/sig.internal.h"
|
|
#include "libc/intrin/pushpop.internal.h"
|
|
#include "libc/macros.internal.h"
|
|
#include "libc/nt/enum/signal.h"
|
|
#include "libc/nt/enum/status.h"
|
|
#include "libc/nt/struct/ntexceptionpointers.h"
|
|
|
|
// this is all a mandatory dependency of winmain
|
|
// so, we trade away maintanibility for tininess
|
|
// see libc/sysv/consts.sh for canonical magnums
|
|
|
|
#define SIGILL_ 4
|
|
#define SIGTRAP_ 5
|
|
#define SIGABRT_ 6
|
|
#define SIGFPE_ 8
|
|
#define SIGSEGV_ 11
|
|
#define SIGSYS_ 31
|
|
|
|
#define TRAP_BRKPT_ 1
|
|
#define ILL_ILLOPC_ 1
|
|
#define ILL_PRVOPC_ 5
|
|
#define SEGV_MAPERR_ 1
|
|
#define SEGV_ACCERR_ 2
|
|
#define SI_USER_ 0
|
|
#define FPE_FLTDIV_ 3
|
|
#define FPE_FLTOVF_ 4
|
|
#define FPE_INTOVF_ 2
|
|
#define FPE_FLTUND_ 5
|
|
#define FPE_FLTRES_ 6
|
|
#define FPE_FLTINV_ 7
|
|
#define SI_KERNEL_ 128
|
|
|
|
#define LO(x) (x & 255)
|
|
#define HI(x) ((x >> 24) / !(x & 0x00ffff00u))
|
|
#define ROW(x, sic, sig) \
|
|
{ \
|
|
{ \
|
|
{ \
|
|
LO(x), HI(x), sic / !(sic & 0xffffff00), sig / !(sig & 0xffffff00) \
|
|
} \
|
|
} \
|
|
}
|
|
|
|
struct CrashSig {
|
|
union {
|
|
struct {
|
|
unsigned char lo;
|
|
unsigned char hi;
|
|
unsigned char sic;
|
|
unsigned char sig;
|
|
};
|
|
unsigned word;
|
|
};
|
|
};
|
|
|
|
static const struct CrashSig kNtCrashSigs[] = {
|
|
ROW(kNtSignalBreakpoint, TRAP_BRKPT_, SIGTRAP_), //
|
|
ROW(kNtSignalIllegalInstruction, ILL_ILLOPC_, SIGILL_), //
|
|
ROW(kNtSignalPrivInstruction, ILL_PRVOPC_, SIGILL_), //
|
|
ROW(kNtSignalInPageError, SEGV_MAPERR_, SIGSEGV_), //
|
|
ROW(kNtStatusStackOverflow, SEGV_MAPERR_, SIGSEGV_), //
|
|
ROW(kNtSignalGuardPage, SEGV_ACCERR_, SIGSEGV_), //
|
|
ROW(kNtSignalAccessViolation, SEGV_ACCERR_, SIGSEGV_), //
|
|
ROW(kNtSignalInvalidHandle, SI_USER_, SIGABRT_), //
|
|
ROW(kNtSignalInvalidParameter, SI_USER_, SIGABRT_), //
|
|
ROW(kNtStatusIntegerOverflow, FPE_INTOVF_, SIGFPE_), //
|
|
ROW(kNtSignalFltDivideByZero, FPE_FLTDIV_, SIGFPE_), //
|
|
ROW(kNtSignalFltOverflow, FPE_FLTOVF_, SIGFPE_), //
|
|
ROW(kNtSignalFltUnderflow, FPE_FLTUND_, SIGFPE_), //
|
|
ROW(kNtSignalFltInexactResult, FPE_FLTRES_, SIGFPE_), //
|
|
ROW(kNtSignalFltDenormalOperand, FPE_FLTINV_, SIGFPE_), //
|
|
ROW(kNtSignalFltInvalidOperation, FPE_FLTINV_, SIGFPE_), //
|
|
ROW(kNtSignalFltStackCheck, FPE_FLTINV_, SIGFPE_), //
|
|
ROW(kNtSignalIntegerDivideByZero, FPE_FLTINV_, SIGFPE_), //
|
|
// ROW(kNtSignalAssertionFailure, SI_USER_, SIGABRT_),
|
|
// ROW(kNtSignalFloatMultipleTraps, FPE_FLTINV_, SIGFPE_),
|
|
// ROW(kNtSignalFloatMultipleFaults, FPE_FLTINV_, SIGFPE_),
|
|
// ROW(kNtSignalDllNotFound, SI_KERNEL_, SIGSYS_),
|
|
// ROW(kNtSignalOrdinalNotFound, SI_KERNEL_, SIGSYS_),
|
|
// ROW(kNtSignalEntrypointNotFound, SI_KERNEL_, SIGSYS_),
|
|
// ROW(kNtSignalDllInitFailed, SI_KERNEL_, SIGSYS_),
|
|
};
|
|
|
|
textwindows dontinstrument int __sig_crash_sig(unsigned exception, int *code) {
|
|
for (int i = 0; i < ARRAYLEN(kNtCrashSigs); ++i) {
|
|
struct CrashSig cs;
|
|
cs.word = kNtCrashSigs[i].word;
|
|
unsigned lo = cs.lo;
|
|
unsigned hi = cs.hi;
|
|
unsigned ec = lo | hi << 24;
|
|
if (ec == exception) {
|
|
*code = cs.sic;
|
|
return cs.sig;
|
|
}
|
|
}
|
|
*code = exception;
|
|
return SIGSEGV_;
|
|
}
|