Laurent Vivier | cd71c08 | 2018-04-11 20:56:33 +0200 | [diff] [blame] | 1 | /* |
| 2 | * qemu user cpu loop |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
| 20 | #include "qemu/osdep.h" |
Markus Armbruster | a8d2532 | 2019-05-23 16:35:08 +0200 | [diff] [blame] | 21 | #include "qemu-common.h" |
Laurent Vivier | cd71c08 | 2018-04-11 20:56:33 +0200 | [diff] [blame] | 22 | #include "qemu.h" |
| 23 | #include "cpu_loop-common.h" |
| 24 | |
Laurent Vivier | 8dd14a9 | 2018-04-11 20:56:43 +0200 | [diff] [blame] | 25 | void cpu_loop(CPUCRISState *env) |
| 26 | { |
Richard Henderson | dbefca2 | 2019-03-22 17:46:40 -0700 | [diff] [blame] | 27 | CPUState *cs = env_cpu(env); |
Laurent Vivier | 8dd14a9 | 2018-04-11 20:56:43 +0200 | [diff] [blame] | 28 | int trapnr, ret; |
| 29 | target_siginfo_t info; |
| 30 | |
| 31 | while (1) { |
| 32 | cpu_exec_start(cs); |
| 33 | trapnr = cpu_exec(cs); |
| 34 | cpu_exec_end(cs); |
| 35 | process_queued_cpu_work(cs); |
| 36 | |
| 37 | switch (trapnr) { |
| 38 | case 0xaa: |
| 39 | { |
| 40 | info.si_signo = TARGET_SIGSEGV; |
| 41 | info.si_errno = 0; |
| 42 | /* XXX: check env->error_code */ |
| 43 | info.si_code = TARGET_SEGV_MAPERR; |
| 44 | info._sifields._sigfault._addr = env->pregs[PR_EDA]; |
| 45 | queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); |
| 46 | } |
| 47 | break; |
| 48 | case EXCP_INTERRUPT: |
| 49 | /* just indicate that signals should be handled asap */ |
| 50 | break; |
| 51 | case EXCP_BREAK: |
| 52 | ret = do_syscall(env, |
| 53 | env->regs[9], |
| 54 | env->regs[10], |
| 55 | env->regs[11], |
| 56 | env->regs[12], |
| 57 | env->regs[13], |
| 58 | env->pregs[7], |
| 59 | env->pregs[11], |
| 60 | 0, 0); |
| 61 | if (ret == -TARGET_ERESTARTSYS) { |
| 62 | env->pc -= 2; |
| 63 | } else if (ret != -TARGET_QEMU_ESIGRETURN) { |
| 64 | env->regs[10] = ret; |
| 65 | } |
| 66 | break; |
| 67 | case EXCP_DEBUG: |
Peter Maydell | b10089a | 2018-10-19 18:49:57 +0100 | [diff] [blame] | 68 | info.si_signo = TARGET_SIGTRAP; |
| 69 | info.si_errno = 0; |
| 70 | info.si_code = TARGET_TRAP_BRKPT; |
| 71 | queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info); |
Laurent Vivier | 8dd14a9 | 2018-04-11 20:56:43 +0200 | [diff] [blame] | 72 | break; |
| 73 | case EXCP_ATOMIC: |
| 74 | cpu_exec_step_atomic(cs); |
| 75 | break; |
| 76 | default: |
Philippe Mathieu-Daudé | 84ca4fa | 2018-07-06 12:51:27 -0300 | [diff] [blame] | 77 | fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr); |
Markus Armbruster | 90c84c5 | 2019-04-17 21:18:02 +0200 | [diff] [blame] | 78 | cpu_dump_state(cs, stderr, 0); |
Laurent Vivier | 8dd14a9 | 2018-04-11 20:56:43 +0200 | [diff] [blame] | 79 | exit(EXIT_FAILURE); |
| 80 | } |
| 81 | process_pending_signals (env); |
| 82 | } |
| 83 | } |
| 84 | |
Laurent Vivier | cd71c08 | 2018-04-11 20:56:33 +0200 | [diff] [blame] | 85 | void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs) |
| 86 | { |
Richard Henderson | 29a0af6 | 2019-03-22 16:07:18 -0700 | [diff] [blame] | 87 | CPUState *cpu = env_cpu(env); |
Laurent Vivier | 8dd14a9 | 2018-04-11 20:56:43 +0200 | [diff] [blame] | 88 | TaskState *ts = cpu->opaque; |
| 89 | struct image_info *info = ts->info; |
| 90 | |
| 91 | env->regs[0] = regs->r0; |
| 92 | env->regs[1] = regs->r1; |
| 93 | env->regs[2] = regs->r2; |
| 94 | env->regs[3] = regs->r3; |
| 95 | env->regs[4] = regs->r4; |
| 96 | env->regs[5] = regs->r5; |
| 97 | env->regs[6] = regs->r6; |
| 98 | env->regs[7] = regs->r7; |
| 99 | env->regs[8] = regs->r8; |
| 100 | env->regs[9] = regs->r9; |
| 101 | env->regs[10] = regs->r10; |
| 102 | env->regs[11] = regs->r11; |
| 103 | env->regs[12] = regs->r12; |
| 104 | env->regs[13] = regs->r13; |
| 105 | env->regs[14] = info->start_stack; |
| 106 | env->regs[15] = regs->acr; |
| 107 | env->pc = regs->erp; |
Laurent Vivier | cd71c08 | 2018-04-11 20:56:33 +0200 | [diff] [blame] | 108 | } |