| /* This file is part of GDB, the GNU debugger. |
| |
| Copyright 2018-2021 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <signal.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| |
| #define OVERWRITE_GP_REGS \ |
| "ldr x1, [x0]\n\t" \ |
| "ldr x2, [x0]\n\t" \ |
| "ldr x3, [x0]\n\t" \ |
| "ldr x4, [x0]\n\t" \ |
| "ldr x5, [x0]\n\t" \ |
| "ldr x6, [x0]\n\t" \ |
| "ldr x7, [x0]\n\t" \ |
| "ldr x8, [x0]\n\t" \ |
| "ldr x9, [x0]\n\t" \ |
| "ldr x10, [x0]\n\t" \ |
| "ldr x11, [x0]\n\t" \ |
| "ldr x12, [x0]\n\t" \ |
| "ldr x13, [x0]\n\t" \ |
| "ldr x14, [x0]\n\t" \ |
| "ldr x15, [x0]\n\t" \ |
| "ldr x16, [x0]\n\t" \ |
| "ldr x17, [x0]\n\t" \ |
| "ldr x18, [x0]\n\t" \ |
| "ldr x19, [x0]\n\t" \ |
| "ldr x20, [x0]\n\t" \ |
| "ldr x21, [x0]\n\t" \ |
| "ldr x22, [x0]\n\t" \ |
| "ldr x23, [x0]\n\t" \ |
| "ldr x24, [x0]\n\t" \ |
| "ldr x25, [x0]\n\t" \ |
| "ldr x26, [x0]\n\t" \ |
| "ldr x27, [x0]\n\t" \ |
| "ldr x28, [x0]\n\t" |
| |
| #ifdef SVE |
| #define OVERWRITE_FP_REGS \ |
| "ptrue p3.s\n\t" \ |
| "ld1w z0.s, p3/z, [x0]\n\t" \ |
| "ld1w z1.s, p3/z, [x0]\n\t" \ |
| "ld1w z2.s, p3/z, [x0]\n\t" \ |
| "ld1w z3.s, p3/z, [x0]\n\t" \ |
| "ld1w z4.s, p3/z, [x0]\n\t" \ |
| "ld1w z5.s, p3/z, [x0]\n\t" \ |
| "ld1w z6.s, p3/z, [x0]\n\t" \ |
| "ld1w z7.s, p3/z, [x0]\n\t" \ |
| "ld1w z8.s, p3/z, [x0]\n\t" \ |
| "ld1w z9.s, p3/z, [x0]\n\t" \ |
| "ld1w z10.s, p3/z, [x0]\n\t" \ |
| "ld1w z11.s, p3/z, [x0]\n\t" \ |
| "ld1w z12.s, p3/z, [x0]\n\t" \ |
| "ld1w z13.s, p3/z, [x0]\n\t" \ |
| "ld1w z14.s, p3/z, [x0]\n\t" \ |
| "ld1w z15.s, p3/z, [x0]\n\t" \ |
| "ld1w z16.s, p3/z, [x0]\n\t" \ |
| "ld1w z17.s, p3/z, [x0]\n\t" \ |
| "ld1w z18.s, p3/z, [x0]\n\t" \ |
| "ld1w z19.s, p3/z, [x0]\n\t" \ |
| "ld1w z20.s, p3/z, [x0]\n\t" \ |
| "ld1w z21.s, p3/z, [x0]\n\t" \ |
| "ld1w z22.s, p3/z, [x0]\n\t" \ |
| "ld1w z23.s, p3/z, [x0]\n\t" \ |
| "ld1w z24.s, p3/z, [x0]\n\t" \ |
| "ld1w z25.s, p3/z, [x0]\n\t" \ |
| "ld1w z26.s, p3/z, [x0]\n\t" \ |
| "ld1w z27.s, p3/z, [x0]\n\t" \ |
| "ld1w z28.s, p3/z, [x0]\n\t" \ |
| "ld1w z29.s, p3/z, [x0]\n\t" \ |
| "ld1w z30.s, p3/z, [x0]\n\t" \ |
| "ld1w z31.s, p3/z, [x0]\n\t" |
| #else |
| #define OVERWRITE_FP_REGS \ |
| "ldr q0, [x0]\n\t" \ |
| "ldr q1, [x0]\n\t" \ |
| "ldr q2, [x0]\n\t" \ |
| "ldr q3, [x0]\n\t" \ |
| "ldr q4, [x0]\n\t" \ |
| "ldr q5, [x0]\n\t" \ |
| "ldr q6, [x0]\n\t" \ |
| "ldr q7, [x0]\n\t" \ |
| "ldr q8, [x0]\n\t" \ |
| "ldr q9, [x0]\n\t" \ |
| "ldr q10, [x0]\n\t" \ |
| "ldr q11, [x0]\n\t" \ |
| "ldr q12, [x0]\n\t" \ |
| "ldr q13, [x0]\n\t" \ |
| "ldr q14, [x0]\n\t" \ |
| "ldr q15, [x0]\n\t" \ |
| "ldr q16, [x0]\n\t" \ |
| "ldr q17, [x0]\n\t" \ |
| "ldr q18, [x0]\n\t" \ |
| "ldr q19, [x0]\n\t" \ |
| "ldr q20, [x0]\n\t" \ |
| "ldr q21, [x0]\n\t" \ |
| "ldr q22, [x0]\n\t" \ |
| "ldr q23, [x0]\n\t" \ |
| "ldr q24, [x0]\n\t" \ |
| "ldr q25, [x0]\n\t" \ |
| "ldr q26, [x0]\n\t" \ |
| "ldr q27, [x0]\n\t" \ |
| "ldr q28, [x0]\n\t" \ |
| "ldr q29, [x0]\n\t" \ |
| "ldr q30, [x0]\n\t" \ |
| "ldr q31, [x0]\n\t" |
| #endif |
| |
| #ifdef SVE |
| #define OVERWRITE_P_REGS(pattern) \ |
| "ptrue p0.s, " #pattern "\n\t" \ |
| "ptrue p1.s, " #pattern "\n\t" \ |
| "ptrue p2.s, " #pattern "\n\t" \ |
| "ptrue p3.s, " #pattern "\n\t" \ |
| "ptrue p4.s, " #pattern "\n\t" \ |
| "ptrue p5.s, " #pattern "\n\t" \ |
| "ptrue p6.s, " #pattern "\n\t" \ |
| "ptrue p7.s, " #pattern "\n\t" \ |
| "ptrue p8.s, " #pattern "\n\t" \ |
| "ptrue p9.s, " #pattern "\n\t" \ |
| "ptrue p10.s, " #pattern "\n\t" \ |
| "ptrue p11.s, " #pattern "\n\t" \ |
| "ptrue p12.s, " #pattern "\n\t" \ |
| "ptrue p13.s, " #pattern "\n\t" \ |
| "ptrue p14.s, " #pattern "\n\t" \ |
| "ptrue p15.s, " #pattern "\n\t" |
| #else |
| #define OVERWRITE_P_REGS(pattern) |
| #endif |
| |
| |
| void |
| handler (int sig) |
| { |
| char buf_handler[] = {0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, |
| 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f}; |
| |
| __asm __volatile ("mov x0, %0\n\t" \ |
| OVERWRITE_GP_REGS \ |
| OVERWRITE_FP_REGS \ |
| OVERWRITE_P_REGS(MUL3) \ |
| : : "r" (buf_handler)); |
| |
| exit(0); |
| } |
| |
| |
| |
| int |
| main () |
| { |
| /* Ensure all the signals aren't blocked. */ |
| sigset_t newset; |
| sigemptyset (&newset); |
| sigprocmask (SIG_SETMASK, &newset, NULL); |
| |
| signal (SIGILL, handler); |
| |
| char buf_main[] = {0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f}; |
| |
| /* 0x06000000 : Cause an illegal instruction. Value undefined as per ARM |
| Architecture Reference Manual ARMv8, Section C4.1. */ |
| |
| __asm __volatile ("mov x0, %0\n\t" \ |
| OVERWRITE_GP_REGS \ |
| OVERWRITE_FP_REGS \ |
| OVERWRITE_P_REGS(VL1) \ |
| ".inst 0x06000000" |
| : : "r" (buf_main)); |
| |
| return 0; |
| } |