CPUClass method dump_statistics() takes an fprintf()-like callback and a FILE * to pass to it. Most callers pass fprintf() and stderr. log_cpu_state() passes fprintf() and qemu_log_file. hmp_info_registers() passes monitor_fprintf() and the current monitor cast to FILE *. monitor_fprintf() casts it right back, and is otherwise identical to monitor_printf(). The callback gets passed around a lot, which is tiresome. The type-punning around monitor_fprintf() is ugly. Drop the callback, and call qemu_fprintf() instead. Also gets rid of the type-punning, since qemu_fprintf() takes NULL instead of the current monitor cast to FILE *. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190417191805.28198-15-armbru@redhat.com>
169 lines
5.9 KiB
C
169 lines
5.9 KiB
C
/*
|
|
* qemu user cpu loop
|
|
*
|
|
* Copyright (c) 2003-2008 Fabrice Bellard
|
|
*
|
|
* 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 2 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 "qemu/osdep.h"
|
|
#include "qemu.h"
|
|
#include "cpu_loop-common.h"
|
|
|
|
void cpu_loop(CPUMBState *env)
|
|
{
|
|
CPUState *cs = CPU(mb_env_get_cpu(env));
|
|
int trapnr, ret;
|
|
target_siginfo_t info;
|
|
|
|
while (1) {
|
|
cpu_exec_start(cs);
|
|
trapnr = cpu_exec(cs);
|
|
cpu_exec_end(cs);
|
|
process_queued_cpu_work(cs);
|
|
|
|
switch (trapnr) {
|
|
case 0xaa:
|
|
{
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
/* XXX: check env->error_code */
|
|
info.si_code = TARGET_SEGV_MAPERR;
|
|
info._sifields._sigfault._addr = 0;
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
}
|
|
break;
|
|
case EXCP_INTERRUPT:
|
|
/* just indicate that signals should be handled asap */
|
|
break;
|
|
case EXCP_BREAK:
|
|
/* Return address is 4 bytes after the call. */
|
|
env->regs[14] += 4;
|
|
env->sregs[SR_PC] = env->regs[14];
|
|
ret = do_syscall(env,
|
|
env->regs[12],
|
|
env->regs[5],
|
|
env->regs[6],
|
|
env->regs[7],
|
|
env->regs[8],
|
|
env->regs[9],
|
|
env->regs[10],
|
|
0, 0);
|
|
if (ret == -TARGET_ERESTARTSYS) {
|
|
/* Wind back to before the syscall. */
|
|
env->sregs[SR_PC] -= 4;
|
|
} else if (ret != -TARGET_QEMU_ESIGRETURN) {
|
|
env->regs[3] = ret;
|
|
}
|
|
/* All syscall exits result in guest r14 being equal to the
|
|
* PC we return to, because the kernel syscall exit "rtbd" does
|
|
* this. (This is true even for sigreturn(); note that r14 is
|
|
* not a userspace-usable register, as the kernel may clobber it
|
|
* at any point.)
|
|
*/
|
|
env->regs[14] = env->sregs[SR_PC];
|
|
break;
|
|
case EXCP_HW_EXCP:
|
|
env->regs[17] = env->sregs[SR_PC] + 4;
|
|
if (env->iflags & D_FLAG) {
|
|
env->sregs[SR_ESR] |= 1 << 12;
|
|
env->sregs[SR_PC] -= 4;
|
|
/* FIXME: if branch was immed, replay the imm as well. */
|
|
}
|
|
|
|
env->iflags &= ~(IMM_FLAG | D_FLAG);
|
|
|
|
switch (env->sregs[SR_ESR] & 31) {
|
|
case ESR_EC_DIVZERO:
|
|
info.si_signo = TARGET_SIGFPE;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_FPE_FLTDIV;
|
|
info._sifields._sigfault._addr = 0;
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
break;
|
|
case ESR_EC_FPU:
|
|
info.si_signo = TARGET_SIGFPE;
|
|
info.si_errno = 0;
|
|
if (env->sregs[SR_FSR] & FSR_IO) {
|
|
info.si_code = TARGET_FPE_FLTINV;
|
|
}
|
|
if (env->sregs[SR_FSR] & FSR_DZ) {
|
|
info.si_code = TARGET_FPE_FLTDIV;
|
|
}
|
|
info._sifields._sigfault._addr = 0;
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unhandled hw-exception: 0x%" PRIx64 "\n",
|
|
env->sregs[SR_ESR] & ESR_EC_MASK);
|
|
cpu_dump_state(cs, stderr, 0);
|
|
exit(EXIT_FAILURE);
|
|
break;
|
|
}
|
|
break;
|
|
case EXCP_DEBUG:
|
|
info.si_signo = TARGET_SIGTRAP;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_TRAP_BRKPT;
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
break;
|
|
case EXCP_ATOMIC:
|
|
cpu_exec_step_atomic(cs);
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
|
|
cpu_dump_state(cs, stderr, 0);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
process_pending_signals (env);
|
|
}
|
|
}
|
|
|
|
void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
|
|
{
|
|
env->regs[0] = regs->r0;
|
|
env->regs[1] = regs->r1;
|
|
env->regs[2] = regs->r2;
|
|
env->regs[3] = regs->r3;
|
|
env->regs[4] = regs->r4;
|
|
env->regs[5] = regs->r5;
|
|
env->regs[6] = regs->r6;
|
|
env->regs[7] = regs->r7;
|
|
env->regs[8] = regs->r8;
|
|
env->regs[9] = regs->r9;
|
|
env->regs[10] = regs->r10;
|
|
env->regs[11] = regs->r11;
|
|
env->regs[12] = regs->r12;
|
|
env->regs[13] = regs->r13;
|
|
env->regs[14] = regs->r14;
|
|
env->regs[15] = regs->r15;
|
|
env->regs[16] = regs->r16;
|
|
env->regs[17] = regs->r17;
|
|
env->regs[18] = regs->r18;
|
|
env->regs[19] = regs->r19;
|
|
env->regs[20] = regs->r20;
|
|
env->regs[21] = regs->r21;
|
|
env->regs[22] = regs->r22;
|
|
env->regs[23] = regs->r23;
|
|
env->regs[24] = regs->r24;
|
|
env->regs[25] = regs->r25;
|
|
env->regs[26] = regs->r26;
|
|
env->regs[27] = regs->r27;
|
|
env->regs[28] = regs->r28;
|
|
env->regs[29] = regs->r29;
|
|
env->regs[30] = regs->r30;
|
|
env->regs[31] = regs->r31;
|
|
env->sregs[SR_PC] = regs->pc;
|
|
}
|