71 lines
3.5 KiB
C
71 lines
3.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/log/check.h"
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#include "libc/log/log.h"
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#include "libc/nexgen32e/vendor.internal.h"
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#include "libc/runtime/gc.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "tool/build/lib/address.h"
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#include "tool/build/lib/endian.h"
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#include "tool/build/lib/throw.h"
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static bool IsHaltingInitialized(struct Machine *m) {
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jmp_buf zb;
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memset(zb, 0, sizeof(zb));
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return memcmp(m->onhalt, zb, sizeof(m->onhalt)) != 0;
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}
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void HaltMachine(struct Machine *m, int code) {
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CHECK(IsHaltingInitialized(m));
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gclongjmp(m->onhalt, code);
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}
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void ThrowDivideError(struct Machine *m) {
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HaltMachine(m, kMachineDivideError);
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}
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void ThrowSegmentationFault(struct Machine *m, int64_t va) {
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m->faultaddr = va;
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if (m->xedd) m->ip -= m->xedd->length;
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WARNF("%s%s ADDR %p IP %p AX %lx CX %lx DX %lx BX %lx SP %lx "
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"BP %lx SI %lx DI %lx R8 %lx R9 %lx R10 %lx R11 %lx R12 %lx R13 %lx "
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"R14 %lx R15 %lx",
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"SEGMENTATION FAULT", IsGenuineCosmo() ? " SIMULATED" : "", va, m->ip,
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Read64(m->ax), Read64(m->cx), Read64(m->dx), Read64(m->bx),
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Read64(m->sp), Read64(m->bp), Read64(m->si), Read64(m->di),
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Read64(m->r8), Read64(m->r9), Read64(m->r10), Read64(m->r11),
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Read64(m->r12), Read64(m->r13), Read64(m->r14), Read64(m->r15));
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HaltMachine(m, kMachineSegmentationFault);
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}
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void ThrowProtectionFault(struct Machine *m) {
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HaltMachine(m, kMachineProtectionFault);
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}
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void OpUd(struct Machine *m, uint32_t rde) {
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if (m->xedd) m->ip -= m->xedd->length;
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HaltMachine(m, kMachineUndefinedInstruction);
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}
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void OpHlt(struct Machine *m, uint32_t rde) {
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HaltMachine(m, kMachineHalt);
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}
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