67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
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* qemu user cpu loop
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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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; either version 2 of the License, or
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* (at your option) any later version.
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*
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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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*
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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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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "qemu.h"
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#include "cpu_loop-common.h"
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void cpu_loop(CPUE2KState *env)
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{
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CPUState *cs = env_cpu(env);
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int trapnr; //TODO , n, sig;
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//target_siginfo_t info;
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//target_ulong addr;
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//abi_long ret;
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while (1) {
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cpu_exec_start(cs);
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trapnr = cpu_exec(cs);
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cpu_exec_end(cs);
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process_queued_cpu_work(cs);
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switch (trapnr) {
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case E2K_EXCP_SYSCALL: {
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/* TODO: wrap register indices */
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uint64_t *regs = &env->wregs[env->wbs * 2];
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abi_ulong ret = do_syscall(env, regs[0],
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regs[1], regs[2], regs[3], regs[4],
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regs[5], regs[6], regs[7], regs[8]);
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if (ret == -TARGET_ERESTARTSYS) {
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/* TODO: restart syscall */
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} else if (ret != -TARGET_QEMU_ESIGRETURN) {
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regs[0] = ret;
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}
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break;
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}
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default:
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fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
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cpu_dump_state(cs, stderr, 0);
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exit(EXIT_FAILURE);
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}
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process_pending_signals (env);
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}
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}
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void target_cpu_copy_regs(CPUE2KState *env, struct target_pt_regs *regs)
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{
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env->ip = regs->ip;
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// TODO
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}
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