linux-user: move microblaze signal.c parts to microblaze directory
No code change, only move code from signal.c to microblaze/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-6-laurent@vivier.eu>
This commit is contained in:
Laurent Vivier
parent
0f22162a4d
commit
f9fb3ba359
@ -16,3 +16,233 @@
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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.h"
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#include "target_signal.h"
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#include "signal-common.h"
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#include "linux-user/trace.h"
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struct target_sigcontext {
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struct target_pt_regs regs; /* needs to be first */
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uint32_t oldmask;
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};
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struct target_stack_t {
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abi_ulong ss_sp;
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int ss_flags;
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unsigned int ss_size;
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};
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struct target_ucontext {
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abi_ulong tuc_flags;
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abi_ulong tuc_link;
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struct target_stack_t tuc_stack;
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struct target_sigcontext tuc_mcontext;
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uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1];
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};
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/* Signal frames. */
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struct target_signal_frame {
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struct target_ucontext uc;
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uint32_t extramask[TARGET_NSIG_WORDS - 1];
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uint32_t tramp[2];
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};
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struct rt_signal_frame {
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siginfo_t info;
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ucontext_t uc;
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uint32_t tramp[2];
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};
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static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
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{
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__put_user(env->regs[0], &sc->regs.r0);
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__put_user(env->regs[1], &sc->regs.r1);
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__put_user(env->regs[2], &sc->regs.r2);
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__put_user(env->regs[3], &sc->regs.r3);
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__put_user(env->regs[4], &sc->regs.r4);
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__put_user(env->regs[5], &sc->regs.r5);
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__put_user(env->regs[6], &sc->regs.r6);
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__put_user(env->regs[7], &sc->regs.r7);
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__put_user(env->regs[8], &sc->regs.r8);
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__put_user(env->regs[9], &sc->regs.r9);
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__put_user(env->regs[10], &sc->regs.r10);
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__put_user(env->regs[11], &sc->regs.r11);
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__put_user(env->regs[12], &sc->regs.r12);
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__put_user(env->regs[13], &sc->regs.r13);
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__put_user(env->regs[14], &sc->regs.r14);
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__put_user(env->regs[15], &sc->regs.r15);
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__put_user(env->regs[16], &sc->regs.r16);
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__put_user(env->regs[17], &sc->regs.r17);
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__put_user(env->regs[18], &sc->regs.r18);
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__put_user(env->regs[19], &sc->regs.r19);
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__put_user(env->regs[20], &sc->regs.r20);
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__put_user(env->regs[21], &sc->regs.r21);
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__put_user(env->regs[22], &sc->regs.r22);
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__put_user(env->regs[23], &sc->regs.r23);
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__put_user(env->regs[24], &sc->regs.r24);
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__put_user(env->regs[25], &sc->regs.r25);
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__put_user(env->regs[26], &sc->regs.r26);
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__put_user(env->regs[27], &sc->regs.r27);
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__put_user(env->regs[28], &sc->regs.r28);
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__put_user(env->regs[29], &sc->regs.r29);
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__put_user(env->regs[30], &sc->regs.r30);
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__put_user(env->regs[31], &sc->regs.r31);
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__put_user(env->sregs[SR_PC], &sc->regs.pc);
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}
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static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
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{
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__get_user(env->regs[0], &sc->regs.r0);
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__get_user(env->regs[1], &sc->regs.r1);
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__get_user(env->regs[2], &sc->regs.r2);
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__get_user(env->regs[3], &sc->regs.r3);
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__get_user(env->regs[4], &sc->regs.r4);
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__get_user(env->regs[5], &sc->regs.r5);
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__get_user(env->regs[6], &sc->regs.r6);
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__get_user(env->regs[7], &sc->regs.r7);
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__get_user(env->regs[8], &sc->regs.r8);
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__get_user(env->regs[9], &sc->regs.r9);
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__get_user(env->regs[10], &sc->regs.r10);
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__get_user(env->regs[11], &sc->regs.r11);
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__get_user(env->regs[12], &sc->regs.r12);
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__get_user(env->regs[13], &sc->regs.r13);
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__get_user(env->regs[14], &sc->regs.r14);
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__get_user(env->regs[15], &sc->regs.r15);
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__get_user(env->regs[16], &sc->regs.r16);
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__get_user(env->regs[17], &sc->regs.r17);
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__get_user(env->regs[18], &sc->regs.r18);
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__get_user(env->regs[19], &sc->regs.r19);
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__get_user(env->regs[20], &sc->regs.r20);
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__get_user(env->regs[21], &sc->regs.r21);
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__get_user(env->regs[22], &sc->regs.r22);
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__get_user(env->regs[23], &sc->regs.r23);
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__get_user(env->regs[24], &sc->regs.r24);
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__get_user(env->regs[25], &sc->regs.r25);
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__get_user(env->regs[26], &sc->regs.r26);
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__get_user(env->regs[27], &sc->regs.r27);
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__get_user(env->regs[28], &sc->regs.r28);
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__get_user(env->regs[29], &sc->regs.r29);
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__get_user(env->regs[30], &sc->regs.r30);
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__get_user(env->regs[31], &sc->regs.r31);
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__get_user(env->sregs[SR_PC], &sc->regs.pc);
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}
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static abi_ulong get_sigframe(struct target_sigaction *ka,
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CPUMBState *env, int frame_size)
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{
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abi_ulong sp = env->regs[1];
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if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !on_sig_stack(sp)) {
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sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
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}
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return ((sp - frame_size) & -8UL);
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}
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void setup_frame(int sig, struct target_sigaction *ka,
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target_sigset_t *set, CPUMBState *env)
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{
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struct target_signal_frame *frame;
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abi_ulong frame_addr;
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int i;
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frame_addr = get_sigframe(ka, env, sizeof *frame);
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trace_user_setup_frame(env, frame_addr);
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if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
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goto badframe;
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/* Save the mask. */
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__put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask);
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for(i = 1; i < TARGET_NSIG_WORDS; i++) {
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__put_user(set->sig[i], &frame->extramask[i - 1]);
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}
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setup_sigcontext(&frame->uc.tuc_mcontext, env);
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/* Set up to return from userspace. If provided, use a stub
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already in userspace. */
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/* minus 8 is offset to cater for "rtsd r15,8" offset */
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if (ka->sa_flags & TARGET_SA_RESTORER) {
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env->regs[15] = ((unsigned long)ka->sa_restorer)-8;
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} else {
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uint32_t t;
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/* Note, these encodings are _big endian_! */
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/* addi r12, r0, __NR_sigreturn */
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t = 0x31800000UL | TARGET_NR_sigreturn;
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__put_user(t, frame->tramp + 0);
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/* brki r14, 0x8 */
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t = 0xb9cc0008UL;
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__put_user(t, frame->tramp + 1);
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/* Return from sighandler will jump to the tramp.
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Negative 8 offset because return is rtsd r15, 8 */
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env->regs[15] = frame_addr + offsetof(struct target_signal_frame, tramp)
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- 8;
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}
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/* Set up registers for signal handler */
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env->regs[1] = frame_addr;
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/* Signal handler args: */
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env->regs[5] = sig; /* Arg 0: signum */
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env->regs[6] = 0;
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/* arg 1: sigcontext */
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env->regs[7] = frame_addr += offsetof(typeof(*frame), uc);
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/* Offset of 4 to handle microblaze rtid r14, 0 */
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env->sregs[SR_PC] = (unsigned long)ka->_sa_handler;
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unlock_user_struct(frame, frame_addr, 1);
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return;
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badframe:
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force_sigsegv(sig);
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}
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void setup_rt_frame(int sig, struct target_sigaction *ka,
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target_siginfo_t *info,
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target_sigset_t *set, CPUMBState *env)
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{
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fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
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}
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long do_sigreturn(CPUMBState *env)
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{
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struct target_signal_frame *frame;
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abi_ulong frame_addr;
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target_sigset_t target_set;
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sigset_t set;
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int i;
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frame_addr = env->regs[R_SP];
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trace_user_do_sigreturn(env, frame_addr);
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/* Make sure the guest isn't playing games. */
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if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
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goto badframe;
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/* Restore blocked signals */
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__get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask);
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for(i = 1; i < TARGET_NSIG_WORDS; i++) {
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__get_user(target_set.sig[i], &frame->extramask[i - 1]);
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}
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target_to_host_sigset_internal(&set, &target_set);
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set_sigmask(&set);
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restore_sigcontext(&frame->uc.tuc_mcontext, env);
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/* We got here through a sigreturn syscall, our path back is via an
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rtb insn so setup r14 for that. */
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env->regs[14] = env->sregs[SR_PC];
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unlock_user_struct(frame, frame_addr, 0);
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return -TARGET_QEMU_ESIGRETURN;
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badframe:
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force_sig(TARGET_SIGSEGV);
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return -TARGET_QEMU_ESIGRETURN;
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}
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long do_rt_sigreturn(CPUMBState *env)
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{
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trace_user_do_rt_sigreturn(env, 0);
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fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
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return -TARGET_ENOSYS;
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}
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@ -26,5 +26,9 @@ static inline abi_ulong get_sp_from_cpustate(CPUMBState *state)
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return state->regs[1];
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}
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void setup_frame(int sig, struct target_sigaction *ka,
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target_sigset_t *set, CPUMBState *env);
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void setup_rt_frame(int sig, struct target_sigaction *ka,
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target_siginfo_t *info,
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target_sigset_t *set, CPUMBState *env);
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#endif /* MICROBLAZE_TARGET_SIGNAL_H */
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@ -2364,233 +2364,6 @@ badframe:
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return -TARGET_QEMU_ESIGRETURN;
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}
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#elif defined(TARGET_MICROBLAZE)
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struct target_sigcontext {
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struct target_pt_regs regs; /* needs to be first */
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uint32_t oldmask;
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};
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struct target_stack_t {
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abi_ulong ss_sp;
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int ss_flags;
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unsigned int ss_size;
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};
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struct target_ucontext {
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abi_ulong tuc_flags;
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abi_ulong tuc_link;
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struct target_stack_t tuc_stack;
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struct target_sigcontext tuc_mcontext;
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uint32_t tuc_extramask[TARGET_NSIG_WORDS - 1];
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};
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/* Signal frames. */
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struct target_signal_frame {
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struct target_ucontext uc;
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uint32_t extramask[TARGET_NSIG_WORDS - 1];
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uint32_t tramp[2];
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};
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struct rt_signal_frame {
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siginfo_t info;
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ucontext_t uc;
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uint32_t tramp[2];
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};
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static void setup_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
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{
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__put_user(env->regs[0], &sc->regs.r0);
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__put_user(env->regs[1], &sc->regs.r1);
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__put_user(env->regs[2], &sc->regs.r2);
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__put_user(env->regs[3], &sc->regs.r3);
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__put_user(env->regs[4], &sc->regs.r4);
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__put_user(env->regs[5], &sc->regs.r5);
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__put_user(env->regs[6], &sc->regs.r6);
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__put_user(env->regs[7], &sc->regs.r7);
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__put_user(env->regs[8], &sc->regs.r8);
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__put_user(env->regs[9], &sc->regs.r9);
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__put_user(env->regs[10], &sc->regs.r10);
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__put_user(env->regs[11], &sc->regs.r11);
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__put_user(env->regs[12], &sc->regs.r12);
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__put_user(env->regs[13], &sc->regs.r13);
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__put_user(env->regs[14], &sc->regs.r14);
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__put_user(env->regs[15], &sc->regs.r15);
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__put_user(env->regs[16], &sc->regs.r16);
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__put_user(env->regs[17], &sc->regs.r17);
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__put_user(env->regs[18], &sc->regs.r18);
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__put_user(env->regs[19], &sc->regs.r19);
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__put_user(env->regs[20], &sc->regs.r20);
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__put_user(env->regs[21], &sc->regs.r21);
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__put_user(env->regs[22], &sc->regs.r22);
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__put_user(env->regs[23], &sc->regs.r23);
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__put_user(env->regs[24], &sc->regs.r24);
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__put_user(env->regs[25], &sc->regs.r25);
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__put_user(env->regs[26], &sc->regs.r26);
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__put_user(env->regs[27], &sc->regs.r27);
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__put_user(env->regs[28], &sc->regs.r28);
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__put_user(env->regs[29], &sc->regs.r29);
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__put_user(env->regs[30], &sc->regs.r30);
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__put_user(env->regs[31], &sc->regs.r31);
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__put_user(env->sregs[SR_PC], &sc->regs.pc);
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}
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static void restore_sigcontext(struct target_sigcontext *sc, CPUMBState *env)
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{
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__get_user(env->regs[0], &sc->regs.r0);
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__get_user(env->regs[1], &sc->regs.r1);
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__get_user(env->regs[2], &sc->regs.r2);
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__get_user(env->regs[3], &sc->regs.r3);
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__get_user(env->regs[4], &sc->regs.r4);
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__get_user(env->regs[5], &sc->regs.r5);
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__get_user(env->regs[6], &sc->regs.r6);
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__get_user(env->regs[7], &sc->regs.r7);
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__get_user(env->regs[8], &sc->regs.r8);
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__get_user(env->regs[9], &sc->regs.r9);
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__get_user(env->regs[10], &sc->regs.r10);
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__get_user(env->regs[11], &sc->regs.r11);
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__get_user(env->regs[12], &sc->regs.r12);
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__get_user(env->regs[13], &sc->regs.r13);
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__get_user(env->regs[14], &sc->regs.r14);
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__get_user(env->regs[15], &sc->regs.r15);
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__get_user(env->regs[16], &sc->regs.r16);
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__get_user(env->regs[17], &sc->regs.r17);
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__get_user(env->regs[18], &sc->regs.r18);
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__get_user(env->regs[19], &sc->regs.r19);
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__get_user(env->regs[20], &sc->regs.r20);
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__get_user(env->regs[21], &sc->regs.r21);
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__get_user(env->regs[22], &sc->regs.r22);
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__get_user(env->regs[23], &sc->regs.r23);
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__get_user(env->regs[24], &sc->regs.r24);
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__get_user(env->regs[25], &sc->regs.r25);
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__get_user(env->regs[26], &sc->regs.r26);
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__get_user(env->regs[27], &sc->regs.r27);
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__get_user(env->regs[28], &sc->regs.r28);
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__get_user(env->regs[29], &sc->regs.r29);
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__get_user(env->regs[30], &sc->regs.r30);
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__get_user(env->regs[31], &sc->regs.r31);
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__get_user(env->sregs[SR_PC], &sc->regs.pc);
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}
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static abi_ulong get_sigframe(struct target_sigaction *ka,
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CPUMBState *env, int frame_size)
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{
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abi_ulong sp = env->regs[1];
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if ((ka->sa_flags & TARGET_SA_ONSTACK) != 0 && !on_sig_stack(sp)) {
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sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
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}
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return ((sp - frame_size) & -8UL);
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}
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static void setup_frame(int sig, struct target_sigaction *ka,
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target_sigset_t *set, CPUMBState *env)
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{
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struct target_signal_frame *frame;
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abi_ulong frame_addr;
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int i;
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frame_addr = get_sigframe(ka, env, sizeof *frame);
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trace_user_setup_frame(env, frame_addr);
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if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
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goto badframe;
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|
||||
/* Save the mask. */
|
||||
__put_user(set->sig[0], &frame->uc.tuc_mcontext.oldmask);
|
||||
|
||||
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
|
||||
__put_user(set->sig[i], &frame->extramask[i - 1]);
|
||||
}
|
||||
|
||||
setup_sigcontext(&frame->uc.tuc_mcontext, env);
|
||||
|
||||
/* Set up to return from userspace. If provided, use a stub
|
||||
already in userspace. */
|
||||
/* minus 8 is offset to cater for "rtsd r15,8" offset */
|
||||
if (ka->sa_flags & TARGET_SA_RESTORER) {
|
||||
env->regs[15] = ((unsigned long)ka->sa_restorer)-8;
|
||||
} else {
|
||||
uint32_t t;
|
||||
/* Note, these encodings are _big endian_! */
|
||||
/* addi r12, r0, __NR_sigreturn */
|
||||
t = 0x31800000UL | TARGET_NR_sigreturn;
|
||||
__put_user(t, frame->tramp + 0);
|
||||
/* brki r14, 0x8 */
|
||||
t = 0xb9cc0008UL;
|
||||
__put_user(t, frame->tramp + 1);
|
||||
|
||||
/* Return from sighandler will jump to the tramp.
|
||||
Negative 8 offset because return is rtsd r15, 8 */
|
||||
env->regs[15] = frame_addr + offsetof(struct target_signal_frame, tramp)
|
||||
- 8;
|
||||
}
|
||||
|
||||
/* Set up registers for signal handler */
|
||||
env->regs[1] = frame_addr;
|
||||
/* Signal handler args: */
|
||||
env->regs[5] = sig; /* Arg 0: signum */
|
||||
env->regs[6] = 0;
|
||||
/* arg 1: sigcontext */
|
||||
env->regs[7] = frame_addr += offsetof(typeof(*frame), uc);
|
||||
|
||||
/* Offset of 4 to handle microblaze rtid r14, 0 */
|
||||
env->sregs[SR_PC] = (unsigned long)ka->_sa_handler;
|
||||
|
||||
unlock_user_struct(frame, frame_addr, 1);
|
||||
return;
|
||||
badframe:
|
||||
force_sigsegv(sig);
|
||||
}
|
||||
|
||||
static void setup_rt_frame(int sig, struct target_sigaction *ka,
|
||||
target_siginfo_t *info,
|
||||
target_sigset_t *set, CPUMBState *env)
|
||||
{
|
||||
fprintf(stderr, "Microblaze setup_rt_frame: not implemented\n");
|
||||
}
|
||||
|
||||
long do_sigreturn(CPUMBState *env)
|
||||
{
|
||||
struct target_signal_frame *frame;
|
||||
abi_ulong frame_addr;
|
||||
target_sigset_t target_set;
|
||||
sigset_t set;
|
||||
int i;
|
||||
|
||||
frame_addr = env->regs[R_SP];
|
||||
trace_user_do_sigreturn(env, frame_addr);
|
||||
/* Make sure the guest isn't playing games. */
|
||||
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1))
|
||||
goto badframe;
|
||||
|
||||
/* Restore blocked signals */
|
||||
__get_user(target_set.sig[0], &frame->uc.tuc_mcontext.oldmask);
|
||||
for(i = 1; i < TARGET_NSIG_WORDS; i++) {
|
||||
__get_user(target_set.sig[i], &frame->extramask[i - 1]);
|
||||
}
|
||||
target_to_host_sigset_internal(&set, &target_set);
|
||||
set_sigmask(&set);
|
||||
|
||||
restore_sigcontext(&frame->uc.tuc_mcontext, env);
|
||||
/* We got here through a sigreturn syscall, our path back is via an
|
||||
rtb insn so setup r14 for that. */
|
||||
env->regs[14] = env->sregs[SR_PC];
|
||||
|
||||
unlock_user_struct(frame, frame_addr, 0);
|
||||
return -TARGET_QEMU_ESIGRETURN;
|
||||
badframe:
|
||||
force_sig(TARGET_SIGSEGV);
|
||||
return -TARGET_QEMU_ESIGRETURN;
|
||||
}
|
||||
|
||||
long do_rt_sigreturn(CPUMBState *env)
|
||||
{
|
||||
trace_user_do_rt_sigreturn(env, 0);
|
||||
fprintf(stderr, "Microblaze do_rt_sigreturn: not implemented\n");
|
||||
return -TARGET_ENOSYS;
|
||||
}
|
||||
|
||||
#elif defined(TARGET_CRIS)
|
||||
|
||||
struct target_sigcontext {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user