70 lines
3.4 KiB
C
70 lines
3.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 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/log/check.h"
|
|
#include "libc/log/log.h"
|
|
#include "libc/nexgen32e/vendor.internal.h"
|
|
#include "libc/runtime/gc.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/str/str.h"
|
|
#include "tool/build/lib/address.h"
|
|
#include "tool/build/lib/endian.h"
|
|
#include "tool/build/lib/throw.h"
|
|
|
|
static bool IsHaltingInitialized(struct Machine *m) {
|
|
jmp_buf zb;
|
|
memset(zb, 0, sizeof(zb));
|
|
return memcmp(m->onhalt, zb, sizeof(m->onhalt)) != 0;
|
|
}
|
|
|
|
void HaltMachine(struct Machine *m, int code) {
|
|
CHECK(IsHaltingInitialized(m));
|
|
gclongjmp(m->onhalt, code);
|
|
}
|
|
|
|
void ThrowDivideError(struct Machine *m) {
|
|
HaltMachine(m, kMachineDivideError);
|
|
}
|
|
|
|
void ThrowSegmentationFault(struct Machine *m, int64_t va) {
|
|
m->faultaddr = va;
|
|
if (m->xedd) m->ip -= m->xedd->length;
|
|
WARNF("%s%s ADDR %p IP %p AX %lx CX %lx DX %lx BX %lx SP %lx "
|
|
"BP %lx SI %lx DI %lx R8 %lx R9 %lx R10 %lx R11 %lx R12 %lx R13 %lx "
|
|
"R14 %lx R15 %lx",
|
|
"SEGMENTATION FAULT", IsGenuineCosmo() ? " SIMULATED" : "", va, m->ip,
|
|
Read64(m->ax), Read64(m->cx), Read64(m->dx), Read64(m->bx),
|
|
Read64(m->sp), Read64(m->bp), Read64(m->si), Read64(m->di),
|
|
Read64(m->r8), Read64(m->r9), Read64(m->r10), Read64(m->r11),
|
|
Read64(m->r12), Read64(m->r13), Read64(m->r14), Read64(m->r15));
|
|
HaltMachine(m, kMachineSegmentationFault);
|
|
}
|
|
|
|
void ThrowProtectionFault(struct Machine *m) {
|
|
HaltMachine(m, kMachineProtectionFault);
|
|
}
|
|
|
|
void OpUd(struct Machine *m, uint32_t rde) {
|
|
if (m->xedd) m->ip -= m->xedd->length;
|
|
HaltMachine(m, kMachineUndefinedInstruction);
|
|
}
|
|
|
|
void OpHlt(struct Machine *m, uint32_t rde) {
|
|
HaltMachine(m, kMachineHalt);
|
|
}
|