mirror of
https://github.com/qemu/qemu.git
synced 2024-12-05 17:53:36 +08:00
25f327081b
Cleanup in the boilerplate that each target must define. Replace hppa_env_get_cpu with env_archcpu. The combination CPU(hppa_env_get_cpu) should have used ENV_GET_CPU to begin; use env_cpu now. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
209 lines
6.5 KiB
C
209 lines
6.5 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"
|
|
|
|
static abi_ulong hppa_lws(CPUHPPAState *env)
|
|
{
|
|
uint32_t which = env->gr[20];
|
|
abi_ulong addr = env->gr[26];
|
|
abi_ulong old = env->gr[25];
|
|
abi_ulong new = env->gr[24];
|
|
abi_ulong size, ret;
|
|
|
|
switch (which) {
|
|
default:
|
|
return -TARGET_ENOSYS;
|
|
|
|
case 0: /* elf32 atomic 32bit cmpxchg */
|
|
if ((addr & 3) || !access_ok(VERIFY_WRITE, addr, 4)) {
|
|
return -TARGET_EFAULT;
|
|
}
|
|
old = tswap32(old);
|
|
new = tswap32(new);
|
|
ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new);
|
|
ret = tswap32(ret);
|
|
break;
|
|
|
|
case 2: /* elf32 atomic "new" cmpxchg */
|
|
size = env->gr[23];
|
|
if (size >= 4) {
|
|
return -TARGET_ENOSYS;
|
|
}
|
|
if (((addr | old | new) & ((1 << size) - 1))
|
|
|| !access_ok(VERIFY_WRITE, addr, 1 << size)
|
|
|| !access_ok(VERIFY_READ, old, 1 << size)
|
|
|| !access_ok(VERIFY_READ, new, 1 << size)) {
|
|
return -TARGET_EFAULT;
|
|
}
|
|
/* Note that below we use host-endian loads so that the cmpxchg
|
|
can be host-endian as well. */
|
|
switch (size) {
|
|
case 0:
|
|
old = *(uint8_t *)g2h(old);
|
|
new = *(uint8_t *)g2h(new);
|
|
ret = atomic_cmpxchg((uint8_t *)g2h(addr), old, new);
|
|
ret = ret != old;
|
|
break;
|
|
case 1:
|
|
old = *(uint16_t *)g2h(old);
|
|
new = *(uint16_t *)g2h(new);
|
|
ret = atomic_cmpxchg((uint16_t *)g2h(addr), old, new);
|
|
ret = ret != old;
|
|
break;
|
|
case 2:
|
|
old = *(uint32_t *)g2h(old);
|
|
new = *(uint32_t *)g2h(new);
|
|
ret = atomic_cmpxchg((uint32_t *)g2h(addr), old, new);
|
|
ret = ret != old;
|
|
break;
|
|
case 3:
|
|
{
|
|
uint64_t o64, n64, r64;
|
|
o64 = *(uint64_t *)g2h(old);
|
|
n64 = *(uint64_t *)g2h(new);
|
|
#ifdef CONFIG_ATOMIC64
|
|
r64 = atomic_cmpxchg__nocheck((uint64_t *)g2h(addr), o64, n64);
|
|
ret = r64 != o64;
|
|
#else
|
|
start_exclusive();
|
|
r64 = *(uint64_t *)g2h(addr);
|
|
ret = 1;
|
|
if (r64 == o64) {
|
|
*(uint64_t *)g2h(addr) = n64;
|
|
ret = 0;
|
|
}
|
|
end_exclusive();
|
|
#endif
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
env->gr[28] = ret;
|
|
return 0;
|
|
}
|
|
|
|
void cpu_loop(CPUHPPAState *env)
|
|
{
|
|
CPUState *cs = env_cpu(env);
|
|
target_siginfo_t info;
|
|
abi_ulong ret;
|
|
int trapnr;
|
|
|
|
while (1) {
|
|
cpu_exec_start(cs);
|
|
trapnr = cpu_exec(cs);
|
|
cpu_exec_end(cs);
|
|
process_queued_cpu_work(cs);
|
|
|
|
switch (trapnr) {
|
|
case EXCP_SYSCALL:
|
|
ret = do_syscall(env, env->gr[20],
|
|
env->gr[26], env->gr[25],
|
|
env->gr[24], env->gr[23],
|
|
env->gr[22], env->gr[21], 0, 0);
|
|
switch (ret) {
|
|
default:
|
|
env->gr[28] = ret;
|
|
/* We arrived here by faking the gateway page. Return. */
|
|
env->iaoq_f = env->gr[31];
|
|
env->iaoq_b = env->gr[31] + 4;
|
|
break;
|
|
case -TARGET_ERESTARTSYS:
|
|
case -TARGET_QEMU_ESIGRETURN:
|
|
break;
|
|
}
|
|
break;
|
|
case EXCP_SYSCALL_LWS:
|
|
env->gr[21] = hppa_lws(env);
|
|
/* We arrived here by faking the gateway page. Return. */
|
|
env->iaoq_f = env->gr[31];
|
|
env->iaoq_b = env->gr[31] + 4;
|
|
break;
|
|
case EXCP_ITLB_MISS:
|
|
case EXCP_DTLB_MISS:
|
|
case EXCP_NA_ITLB_MISS:
|
|
case EXCP_NA_DTLB_MISS:
|
|
case EXCP_IMP:
|
|
case EXCP_DMP:
|
|
case EXCP_DMB:
|
|
case EXCP_PAGE_REF:
|
|
case EXCP_DMAR:
|
|
case EXCP_DMPI:
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_SEGV_ACCERR;
|
|
info._sifields._sigfault._addr = env->cr[CR_IOR];
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
break;
|
|
case EXCP_UNALIGN:
|
|
info.si_signo = TARGET_SIGBUS;
|
|
info.si_errno = 0;
|
|
info.si_code = 0;
|
|
info._sifields._sigfault._addr = env->cr[CR_IOR];
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
break;
|
|
case EXCP_ILL:
|
|
case EXCP_PRIV_OPR:
|
|
case EXCP_PRIV_REG:
|
|
info.si_signo = TARGET_SIGILL;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_ILL_ILLOPN;
|
|
info._sifields._sigfault._addr = env->iaoq_f;
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
break;
|
|
case EXCP_OVERFLOW:
|
|
case EXCP_COND:
|
|
case EXCP_ASSIST:
|
|
info.si_signo = TARGET_SIGFPE;
|
|
info.si_errno = 0;
|
|
info.si_code = 0;
|
|
info._sifields._sigfault._addr = env->iaoq_f;
|
|
queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
|
|
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_INTERRUPT:
|
|
/* just indicate that signals should be handled asap */
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
process_pending_signals(env);
|
|
}
|
|
}
|
|
|
|
void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
|
|
{
|
|
int i;
|
|
for (i = 1; i < 32; i++) {
|
|
env->gr[i] = regs->gr[i];
|
|
}
|
|
env->iaoq_f = regs->iaoq[0];
|
|
env->iaoq_b = regs->iaoq[1];
|
|
}
|