linux-user: move tilegx signal.c parts to tilegx directory

No code change, only move code from signal.c to
tilegx/signal.c, except adding includes and
exporting 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>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180424192635.6027-13-laurent@vivier.eu>

1 files changed, 0 insertions, 165 deletions

diff --git a/linux-user/signal.c b/linux-user/signal.c
index 7c2a963e7c..5a3e5bff5e 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -3032,171 +3032,6 @@ sigsegv:
     return -TARGET_QEMU_ESIGRETURN;
 }
 
-#elif defined(TARGET_TILEGX)
-
-struct target_sigcontext {
-    union {
-        /* General-purpose registers.  */
-        abi_ulong gregs[56];
-        struct {
-            abi_ulong __gregs[53];
-            abi_ulong tp;        /* Aliases gregs[TREG_TP].  */
-            abi_ulong sp;        /* Aliases gregs[TREG_SP].  */
-            abi_ulong lr;        /* Aliases gregs[TREG_LR].  */
-        };
-    };
-    abi_ulong pc;        /* Program counter.  */
-    abi_ulong ics;       /* In Interrupt Critical Section?  */
-    abi_ulong faultnum;  /* Fault number.  */
-    abi_ulong pad[5];
-};
-
-struct target_ucontext {
-    abi_ulong tuc_flags;
-    abi_ulong tuc_link;
-    target_stack_t tuc_stack;
-    struct target_sigcontext tuc_mcontext;
-    target_sigset_t tuc_sigmask;   /* mask last for extensibility */
-};
-
-struct target_rt_sigframe {
-    unsigned char save_area[16]; /* caller save area */
-    struct target_siginfo info;
-    struct target_ucontext uc;
-    abi_ulong retcode[2];
-};
-
-#define INSN_MOVELI_R10_139  0x00045fe551483000ULL /* { moveli r10, 139 } */
-#define INSN_SWINT1          0x286b180051485000ULL /* { swint1 } */
-
-
-static void setup_sigcontext(struct target_sigcontext *sc,
-                             CPUArchState *env, int signo)
-{
-    int i;
-
-    for (i = 0; i < TILEGX_R_COUNT; ++i) {
-        __put_user(env->regs[i], &sc->gregs[i]);
-    }
-
-    __put_user(env->pc, &sc->pc);
-    __put_user(0, &sc->ics);
-    __put_user(signo, &sc->faultnum);
-}
-
-static void restore_sigcontext(CPUTLGState *env, struct target_sigcontext *sc)
-{
-    int i;
-
-    for (i = 0; i < TILEGX_R_COUNT; ++i) {
-        __get_user(env->regs[i], &sc->gregs[i]);
-    }
-
-    __get_user(env->pc, &sc->pc);
-}
-
-static abi_ulong get_sigframe(struct target_sigaction *ka, CPUArchState *env,
-                              size_t frame_size)
-{
-    unsigned long sp = env->regs[TILEGX_R_SP];
-
-    if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) {
-        return -1UL;
-    }
-
-    if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) {
-        sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
-    }
-
-    sp -= frame_size;
-    sp &= -16UL;
-    return sp;
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
-                           target_siginfo_t *info,
-                           target_sigset_t *set, CPUArchState *env)
-{
-    abi_ulong frame_addr;
-    struct target_rt_sigframe *frame;
-    unsigned long restorer;
-
-    frame_addr = get_sigframe(ka, env, sizeof(*frame));
-    trace_user_setup_rt_frame(env, frame_addr);
-    if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
-        goto give_sigsegv;
-    }
-
-    /* Always write at least the signal number for the stack backtracer. */
-    if (ka->sa_flags & TARGET_SA_SIGINFO) {
-        /* At sigreturn time, restore the callee-save registers too. */
-        tswap_siginfo(&frame->info, info);
-        /* regs->flags |= PT_FLAGS_RESTORE_REGS; FIXME: we can skip it? */
-    } else {
-        __put_user(info->si_signo, &frame->info.si_signo);
-    }
-
-    /* Create the ucontext.  */
-    __put_user(0, &frame->uc.tuc_flags);
-    __put_user(0, &frame->uc.tuc_link);
-    __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
-    __put_user(sas_ss_flags(env->regs[TILEGX_R_SP]),
-               &frame->uc.tuc_stack.ss_flags);
-    __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
-    setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
-
-    if (ka->sa_flags & TARGET_SA_RESTORER) {
-        restorer = (unsigned long) ka->sa_restorer;
-    } else {
-        __put_user(INSN_MOVELI_R10_139, &frame->retcode[0]);
-        __put_user(INSN_SWINT1, &frame->retcode[1]);
-        restorer = frame_addr + offsetof(struct target_rt_sigframe, retcode);
-    }
-    env->pc = (unsigned long) ka->_sa_handler;
-    env->regs[TILEGX_R_SP] = (unsigned long) frame;
-    env->regs[TILEGX_R_LR] = restorer;
-    env->regs[0] = (unsigned long) sig;
-    env->regs[1] = (unsigned long) &frame->info;
-    env->regs[2] = (unsigned long) &frame->uc;
-    /* regs->flags |= PT_FLAGS_CALLER_SAVES; FIXME: we can skip it? */
-
-    unlock_user_struct(frame, frame_addr, 1);
-    return;
-
-give_sigsegv:
-    force_sigsegv(sig);
-}
-
-long do_rt_sigreturn(CPUTLGState *env)
-{
-    abi_ulong frame_addr = env->regs[TILEGX_R_SP];
-    struct target_rt_sigframe *frame;
-    sigset_t set;
-
-    trace_user_do_rt_sigreturn(env, frame_addr);
-    if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
-        goto badframe;
-    }
-    target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
-    set_sigmask(&set);
-
-    restore_sigcontext(env, &frame->uc.tuc_mcontext);
-    if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
-                                             uc.tuc_stack),
-                       0, env->regs[TILEGX_R_SP]) == -EFAULT) {
-        goto badframe;
-    }
-
-    unlock_user_struct(frame, frame_addr, 0);
-    return -TARGET_QEMU_ESIGRETURN;
-
-
- badframe:
-    unlock_user_struct(frame, frame_addr, 0);
-    force_sig(TARGET_SIGSEGV);
-    return -TARGET_QEMU_ESIGRETURN;
-}
-
 #elif defined(TARGET_RISCV)
 
 /* Signal handler invocation must be transparent for the code being