187 lines
5.3 KiB
C
187 lines
5.3 KiB
C
/* This file is part of GDB, the GNU debugger.
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Copyright 2018-2022 Free Software Foundation, Inc.
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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; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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, see <http://www.gnu.org/licenses/>. */
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#include <signal.h>
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#include <unistd.h>
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#include <stdlib.h>
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#define OVERWRITE_GP_REGS \
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"ldr x1, [x0]\n\t" \
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"ldr x2, [x0]\n\t" \
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"ldr x3, [x0]\n\t" \
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"ldr x4, [x0]\n\t" \
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"ldr x5, [x0]\n\t" \
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"ldr x6, [x0]\n\t" \
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"ldr x7, [x0]\n\t" \
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"ldr x8, [x0]\n\t" \
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"ldr x9, [x0]\n\t" \
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"ldr x10, [x0]\n\t" \
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"ldr x11, [x0]\n\t" \
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"ldr x12, [x0]\n\t" \
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"ldr x13, [x0]\n\t" \
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"ldr x14, [x0]\n\t" \
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"ldr x15, [x0]\n\t" \
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"ldr x16, [x0]\n\t" \
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"ldr x17, [x0]\n\t" \
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"ldr x18, [x0]\n\t" \
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"ldr x19, [x0]\n\t" \
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"ldr x20, [x0]\n\t" \
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"ldr x21, [x0]\n\t" \
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"ldr x22, [x0]\n\t" \
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"ldr x23, [x0]\n\t" \
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"ldr x24, [x0]\n\t" \
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"ldr x25, [x0]\n\t" \
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"ldr x26, [x0]\n\t" \
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"ldr x27, [x0]\n\t" \
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"ldr x28, [x0]\n\t"
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#ifdef SVE
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#define OVERWRITE_FP_REGS \
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"ptrue p3.s\n\t" \
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"ld1w z0.s, p3/z, [x0]\n\t" \
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"ld1w z1.s, p3/z, [x0]\n\t" \
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"ld1w z2.s, p3/z, [x0]\n\t" \
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"ld1w z3.s, p3/z, [x0]\n\t" \
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"ld1w z4.s, p3/z, [x0]\n\t" \
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"ld1w z5.s, p3/z, [x0]\n\t" \
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"ld1w z6.s, p3/z, [x0]\n\t" \
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"ld1w z7.s, p3/z, [x0]\n\t" \
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"ld1w z8.s, p3/z, [x0]\n\t" \
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"ld1w z9.s, p3/z, [x0]\n\t" \
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"ld1w z10.s, p3/z, [x0]\n\t" \
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"ld1w z11.s, p3/z, [x0]\n\t" \
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"ld1w z12.s, p3/z, [x0]\n\t" \
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"ld1w z13.s, p3/z, [x0]\n\t" \
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"ld1w z14.s, p3/z, [x0]\n\t" \
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"ld1w z15.s, p3/z, [x0]\n\t" \
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"ld1w z16.s, p3/z, [x0]\n\t" \
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"ld1w z17.s, p3/z, [x0]\n\t" \
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"ld1w z18.s, p3/z, [x0]\n\t" \
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"ld1w z19.s, p3/z, [x0]\n\t" \
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"ld1w z20.s, p3/z, [x0]\n\t" \
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"ld1w z21.s, p3/z, [x0]\n\t" \
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"ld1w z22.s, p3/z, [x0]\n\t" \
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"ld1w z23.s, p3/z, [x0]\n\t" \
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"ld1w z24.s, p3/z, [x0]\n\t" \
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"ld1w z25.s, p3/z, [x0]\n\t" \
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"ld1w z26.s, p3/z, [x0]\n\t" \
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"ld1w z27.s, p3/z, [x0]\n\t" \
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"ld1w z28.s, p3/z, [x0]\n\t" \
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"ld1w z29.s, p3/z, [x0]\n\t" \
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"ld1w z30.s, p3/z, [x0]\n\t" \
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"ld1w z31.s, p3/z, [x0]\n\t"
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#else
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#define OVERWRITE_FP_REGS \
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"ldr q0, [x0]\n\t" \
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"ldr q1, [x0]\n\t" \
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"ldr q2, [x0]\n\t" \
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"ldr q3, [x0]\n\t" \
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"ldr q4, [x0]\n\t" \
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"ldr q5, [x0]\n\t" \
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"ldr q6, [x0]\n\t" \
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"ldr q7, [x0]\n\t" \
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"ldr q8, [x0]\n\t" \
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"ldr q9, [x0]\n\t" \
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"ldr q10, [x0]\n\t" \
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"ldr q11, [x0]\n\t" \
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"ldr q12, [x0]\n\t" \
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"ldr q13, [x0]\n\t" \
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"ldr q14, [x0]\n\t" \
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"ldr q15, [x0]\n\t" \
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"ldr q16, [x0]\n\t" \
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"ldr q17, [x0]\n\t" \
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"ldr q18, [x0]\n\t" \
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"ldr q19, [x0]\n\t" \
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"ldr q20, [x0]\n\t" \
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"ldr q21, [x0]\n\t" \
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"ldr q22, [x0]\n\t" \
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"ldr q23, [x0]\n\t" \
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"ldr q24, [x0]\n\t" \
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"ldr q25, [x0]\n\t" \
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"ldr q26, [x0]\n\t" \
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"ldr q27, [x0]\n\t" \
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"ldr q28, [x0]\n\t" \
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"ldr q29, [x0]\n\t" \
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"ldr q30, [x0]\n\t" \
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"ldr q31, [x0]\n\t"
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#endif
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#ifdef SVE
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#define OVERWRITE_P_REGS(pattern) \
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"ptrue p0.s, " #pattern "\n\t" \
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"ptrue p1.s, " #pattern "\n\t" \
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"ptrue p2.s, " #pattern "\n\t" \
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"ptrue p3.s, " #pattern "\n\t" \
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"ptrue p4.s, " #pattern "\n\t" \
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"ptrue p5.s, " #pattern "\n\t" \
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"ptrue p6.s, " #pattern "\n\t" \
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"ptrue p7.s, " #pattern "\n\t" \
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"ptrue p8.s, " #pattern "\n\t" \
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"ptrue p9.s, " #pattern "\n\t" \
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"ptrue p10.s, " #pattern "\n\t" \
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"ptrue p11.s, " #pattern "\n\t" \
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"ptrue p12.s, " #pattern "\n\t" \
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"ptrue p13.s, " #pattern "\n\t" \
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"ptrue p14.s, " #pattern "\n\t" \
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"ptrue p15.s, " #pattern "\n\t"
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#else
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#define OVERWRITE_P_REGS(pattern)
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#endif
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void
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handler (int sig)
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{
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char buf_handler[] = {0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f};
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__asm __volatile ("mov x0, %0\n\t" \
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OVERWRITE_GP_REGS \
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OVERWRITE_FP_REGS \
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OVERWRITE_P_REGS(MUL3) \
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: : "r" (buf_handler));
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exit(0);
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}
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int
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main ()
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{
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/* Ensure all the signals aren't blocked. */
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sigset_t newset;
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sigemptyset (&newset);
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sigprocmask (SIG_SETMASK, &newset, NULL);
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signal (SIGILL, handler);
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char buf_main[] = {0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f};
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/* 0x06000000 : Cause an illegal instruction. Value undefined as per ARM
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Architecture Reference Manual ARMv8, Section C4.1. */
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__asm __volatile ("mov x0, %0\n\t" \
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OVERWRITE_GP_REGS \
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OVERWRITE_FP_REGS \
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OVERWRITE_P_REGS(VL1) \
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".inst 0x06000000"
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: : "r" (buf_main));
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return 0;
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}
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