linux-user: move microblaze cpu loop to microblaze directory
No code change, only move code from main.c to microblaze/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-13-laurent@vivier.eu>
This commit is contained in:
Laurent Vivier
parent
8dd14a9b79
commit
82e8e64553
@ -149,125 +149,6 @@ void fork_end(int child)
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}
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}
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#ifdef TARGET_MICROBLAZE
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void cpu_loop(CPUMBState *env)
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{
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CPUState *cs = CPU(mb_env_get_cpu(env));
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int trapnr, ret;
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target_siginfo_t info;
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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 0xaa:
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{
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info.si_signo = TARGET_SIGSEGV;
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info.si_errno = 0;
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/* XXX: check env->error_code */
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info.si_code = TARGET_SEGV_MAPERR;
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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}
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break;
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case EXCP_INTERRUPT:
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/* just indicate that signals should be handled asap */
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break;
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case EXCP_BREAK:
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/* Return address is 4 bytes after the call. */
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env->regs[14] += 4;
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env->sregs[SR_PC] = env->regs[14];
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ret = do_syscall(env,
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env->regs[12],
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env->regs[5],
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env->regs[6],
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env->regs[7],
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env->regs[8],
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env->regs[9],
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env->regs[10],
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0, 0);
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if (ret == -TARGET_ERESTARTSYS) {
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/* Wind back to before the syscall. */
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env->sregs[SR_PC] -= 4;
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} else if (ret != -TARGET_QEMU_ESIGRETURN) {
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env->regs[3] = ret;
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}
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/* All syscall exits result in guest r14 being equal to the
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* PC we return to, because the kernel syscall exit "rtbd" does
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* this. (This is true even for sigreturn(); note that r14 is
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* not a userspace-usable register, as the kernel may clobber it
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* at any point.)
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*/
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env->regs[14] = env->sregs[SR_PC];
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break;
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case EXCP_HW_EXCP:
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env->regs[17] = env->sregs[SR_PC] + 4;
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if (env->iflags & D_FLAG) {
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env->sregs[SR_ESR] |= 1 << 12;
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env->sregs[SR_PC] -= 4;
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/* FIXME: if branch was immed, replay the imm as well. */
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}
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env->iflags &= ~(IMM_FLAG | D_FLAG);
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switch (env->sregs[SR_ESR] & 31) {
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case ESR_EC_DIVZERO:
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info.si_signo = TARGET_SIGFPE;
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info.si_errno = 0;
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info.si_code = TARGET_FPE_FLTDIV;
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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break;
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case ESR_EC_FPU:
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info.si_signo = TARGET_SIGFPE;
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info.si_errno = 0;
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if (env->sregs[SR_FSR] & FSR_IO) {
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info.si_code = TARGET_FPE_FLTINV;
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}
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if (env->sregs[SR_FSR] & FSR_DZ) {
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info.si_code = TARGET_FPE_FLTDIV;
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}
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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break;
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default:
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printf ("Unhandled hw-exception: 0x%x\n",
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env->sregs[SR_ESR] & ESR_EC_MASK);
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cpu_dump_state(cs, stderr, fprintf, 0);
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exit(EXIT_FAILURE);
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break;
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}
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break;
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case EXCP_DEBUG:
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{
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int sig;
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sig = gdb_handlesig(cs, TARGET_SIGTRAP);
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if (sig)
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{
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info.si_signo = sig;
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info.si_errno = 0;
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info.si_code = TARGET_TRAP_BRKPT;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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}
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}
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break;
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case EXCP_ATOMIC:
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cpu_exec_step_atomic(cs);
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break;
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default:
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printf ("Unhandled trap: 0x%x\n", trapnr);
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cpu_dump_state(cs, stderr, fprintf, 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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#endif
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#ifdef TARGET_M68K
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void cpu_loop(CPUM68KState *env)
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@ -2169,42 +2050,6 @@ int main(int argc, char **argv, char **envp)
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env->sr = regs->sr;
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ts->sim_syscalls = 1;
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}
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#elif defined(TARGET_MICROBLAZE)
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{
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env->regs[0] = regs->r0;
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env->regs[1] = regs->r1;
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env->regs[2] = regs->r2;
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env->regs[3] = regs->r3;
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env->regs[4] = regs->r4;
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env->regs[5] = regs->r5;
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env->regs[6] = regs->r6;
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env->regs[7] = regs->r7;
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env->regs[8] = regs->r8;
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env->regs[9] = regs->r9;
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env->regs[10] = regs->r10;
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env->regs[11] = regs->r11;
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env->regs[12] = regs->r12;
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env->regs[13] = regs->r13;
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env->regs[14] = regs->r14;
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env->regs[15] = regs->r15;
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env->regs[16] = regs->r16;
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env->regs[17] = regs->r17;
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env->regs[18] = regs->r18;
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env->regs[19] = regs->r19;
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env->regs[20] = regs->r20;
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env->regs[21] = regs->r21;
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env->regs[22] = regs->r22;
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env->regs[23] = regs->r23;
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env->regs[24] = regs->r24;
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env->regs[25] = regs->r25;
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env->regs[26] = regs->r26;
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env->regs[27] = regs->r27;
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env->regs[28] = regs->r28;
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env->regs[29] = regs->r29;
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env->regs[30] = regs->r30;
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env->regs[31] = regs->r31;
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env->sregs[SR_PC] = regs->pc;
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}
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#elif defined(TARGET_RISCV)
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{
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env->pc = regs->sepc;
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@ -21,6 +21,156 @@
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#include "qemu.h"
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#include "cpu_loop-common.h"
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void cpu_loop(CPUMBState *env)
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{
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CPUState *cs = CPU(mb_env_get_cpu(env));
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int trapnr, ret;
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target_siginfo_t info;
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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 0xaa:
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{
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info.si_signo = TARGET_SIGSEGV;
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info.si_errno = 0;
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/* XXX: check env->error_code */
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info.si_code = TARGET_SEGV_MAPERR;
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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}
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break;
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case EXCP_INTERRUPT:
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/* just indicate that signals should be handled asap */
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break;
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case EXCP_BREAK:
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/* Return address is 4 bytes after the call. */
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env->regs[14] += 4;
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env->sregs[SR_PC] = env->regs[14];
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ret = do_syscall(env,
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env->regs[12],
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env->regs[5],
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env->regs[6],
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env->regs[7],
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env->regs[8],
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env->regs[9],
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env->regs[10],
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0, 0);
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if (ret == -TARGET_ERESTARTSYS) {
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/* Wind back to before the syscall. */
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env->sregs[SR_PC] -= 4;
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} else if (ret != -TARGET_QEMU_ESIGRETURN) {
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env->regs[3] = ret;
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}
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/* All syscall exits result in guest r14 being equal to the
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* PC we return to, because the kernel syscall exit "rtbd" does
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* this. (This is true even for sigreturn(); note that r14 is
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* not a userspace-usable register, as the kernel may clobber it
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* at any point.)
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*/
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env->regs[14] = env->sregs[SR_PC];
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break;
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case EXCP_HW_EXCP:
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env->regs[17] = env->sregs[SR_PC] + 4;
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if (env->iflags & D_FLAG) {
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env->sregs[SR_ESR] |= 1 << 12;
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env->sregs[SR_PC] -= 4;
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/* FIXME: if branch was immed, replay the imm as well. */
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}
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env->iflags &= ~(IMM_FLAG | D_FLAG);
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switch (env->sregs[SR_ESR] & 31) {
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case ESR_EC_DIVZERO:
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info.si_signo = TARGET_SIGFPE;
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info.si_errno = 0;
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info.si_code = TARGET_FPE_FLTDIV;
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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break;
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case ESR_EC_FPU:
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info.si_signo = TARGET_SIGFPE;
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info.si_errno = 0;
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if (env->sregs[SR_FSR] & FSR_IO) {
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info.si_code = TARGET_FPE_FLTINV;
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}
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if (env->sregs[SR_FSR] & FSR_DZ) {
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info.si_code = TARGET_FPE_FLTDIV;
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}
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info._sifields._sigfault._addr = 0;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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break;
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default:
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printf ("Unhandled hw-exception: 0x%x\n",
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env->sregs[SR_ESR] & ESR_EC_MASK);
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cpu_dump_state(cs, stderr, fprintf, 0);
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exit(EXIT_FAILURE);
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break;
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}
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break;
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case EXCP_DEBUG:
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{
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int sig;
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sig = gdb_handlesig(cs, TARGET_SIGTRAP);
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if (sig)
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{
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info.si_signo = sig;
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info.si_errno = 0;
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info.si_code = TARGET_TRAP_BRKPT;
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queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
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}
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}
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break;
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case EXCP_ATOMIC:
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cpu_exec_step_atomic(cs);
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break;
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default:
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printf ("Unhandled trap: 0x%x\n", trapnr);
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cpu_dump_state(cs, stderr, fprintf, 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(CPUArchState *env, struct target_pt_regs *regs)
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{
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env->regs[0] = regs->r0;
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env->regs[1] = regs->r1;
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env->regs[2] = regs->r2;
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env->regs[3] = regs->r3;
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env->regs[4] = regs->r4;
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env->regs[5] = regs->r5;
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env->regs[6] = regs->r6;
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env->regs[7] = regs->r7;
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env->regs[8] = regs->r8;
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env->regs[9] = regs->r9;
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env->regs[10] = regs->r10;
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env->regs[11] = regs->r11;
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env->regs[12] = regs->r12;
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env->regs[13] = regs->r13;
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env->regs[14] = regs->r14;
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env->regs[15] = regs->r15;
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env->regs[16] = regs->r16;
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env->regs[17] = regs->r17;
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env->regs[18] = regs->r18;
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env->regs[19] = regs->r19;
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env->regs[20] = regs->r20;
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env->regs[21] = regs->r21;
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env->regs[22] = regs->r22;
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env->regs[23] = regs->r23;
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env->regs[24] = regs->r24;
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env->regs[25] = regs->r25;
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env->regs[26] = regs->r26;
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env->regs[27] = regs->r27;
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env->regs[28] = regs->r28;
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env->regs[29] = regs->r29;
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env->regs[30] = regs->r30;
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env->regs[31] = regs->r31;
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env->sregs[SR_PC] = regs->pc;
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}
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