2020-10-13 22:45:25 +02:00
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/*
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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/help-texts.h"
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#include "qemu.h"
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#include "user-internals.h"
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#include "signal-common.h"
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#include "user-mmap.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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2020-11-08 19:27:47 +01:00
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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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2020-10-13 22:45:25 +02:00
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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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2020-11-12 14:52:51 +01:00
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case E2K_EXCP_SYSCALL: {
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/* TODO: wrap register indices */
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2020-11-15 16:05:27 +01:00
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int wbs = e2k_state_wbs_get(env);
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int offset = (wbs + env->call_wbs) * 2;
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2020-11-13 21:47:31 +01:00
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uint64_t *regs = &env->wregs[offset];
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2020-11-12 14:52:51 +01:00
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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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2020-11-13 21:47:31 +01:00
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unsigned int i;
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2020-11-12 14:52:51 +01:00
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regs[0] = ret;
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2020-11-13 21:47:31 +01:00
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for (i = 1; i < 8; i++) {
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regs[i] = 0;
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}
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2020-11-12 14:52:51 +01:00
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}
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break;
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}
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2020-10-13 22:45:25 +02:00
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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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2020-11-08 19:27:47 +01:00
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env->ip = regs->ip;
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2020-11-15 16:05:27 +01:00
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env->pcsp_lo = regs->pcsp_lo;
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env->pcsp_hi = regs->pcsp_hi;
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env->psp_lo = regs->psp_lo;
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env->psp_hi = regs->psp_hi;
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2020-11-13 15:49:28 +01:00
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env->usd_lo = regs->usd_lo;
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2020-11-15 16:05:27 +01:00
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env->usd_hi = regs->usd_hi;
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2020-10-13 22:45:25 +02:00
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}
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