diff options
author | edgar_igl <edgar_igl@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-03-03 22:23:53 +0000 |
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committer | edgar_igl <edgar_igl@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-03-03 22:23:53 +0000 |
commit | 9664d92872de669dbf87bdc376f3d993a6aa859a (patch) | |
tree | 2b6d158b766374e97859b31c10e47f1ee00640a1 /linux-user | |
parent | ccd4a2193765ca972bac5fe7567faf2ea95cdc98 (diff) |
CRIS signals:
* Save $mof across signals.
* Cleaned up frame accesses.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4012 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'linux-user')
-rw-r--r-- | linux-user/signal.c | 115 |
1 files changed, 58 insertions, 57 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index fa17d41f49..fe3cd58eed 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -2731,67 +2731,68 @@ struct rt_signal_frame { static void setup_sigcontext(struct target_sigcontext *sc, CPUState *env) { - sc->regs.r0 = env->regs[0]; - sc->regs.r1 = env->regs[1]; - sc->regs.r2 = env->regs[2]; - sc->regs.r3 = env->regs[3]; - sc->regs.r4 = env->regs[4]; - sc->regs.r5 = env->regs[5]; - sc->regs.r6 = env->regs[6]; - sc->regs.r7 = env->regs[7]; - sc->regs.r8 = env->regs[8]; - sc->regs.r9 = env->regs[9]; - sc->regs.r10 = env->regs[10]; - sc->regs.r11 = env->regs[11]; - sc->regs.r12 = env->regs[12]; - sc->regs.r13 = env->regs[13]; - sc->usp = env->regs[14]; - sc->regs.acr = env->regs[15]; - sc->regs.srp = env->pregs[PR_SRP]; - sc->regs.erp = env->pc; - - env->pregs[PR_ERP] = env->pc; + __put_user(env->regs[0], &sc->regs.r0); + __put_user(env->regs[1], &sc->regs.r1); + __put_user(env->regs[2], &sc->regs.r2); + __put_user(env->regs[3], &sc->regs.r3); + __put_user(env->regs[4], &sc->regs.r4); + __put_user(env->regs[5], &sc->regs.r5); + __put_user(env->regs[6], &sc->regs.r6); + __put_user(env->regs[7], &sc->regs.r7); + __put_user(env->regs[8], &sc->regs.r8); + __put_user(env->regs[9], &sc->regs.r9); + __put_user(env->regs[10], &sc->regs.r10); + __put_user(env->regs[11], &sc->regs.r11); + __put_user(env->regs[12], &sc->regs.r12); + __put_user(env->regs[13], &sc->regs.r13); + __put_user(env->regs[14], &sc->usp); + __put_user(env->regs[15], &sc->regs.acr); + __put_user(env->pregs[PR_MOF], &sc->regs.mof); + __put_user(env->pregs[PR_SRP], &sc->regs.srp); + __put_user(env->pc, &sc->regs.erp); } + static void restore_sigcontext(struct target_sigcontext *sc, CPUState *env) { - env->regs[0] = sc->regs.r0; - env->regs[1] = sc->regs.r1; - env->regs[2] = sc->regs.r2; - env->regs[3] = sc->regs.r3; - env->regs[4] = sc->regs.r4; - env->regs[5] = sc->regs.r5; - env->regs[6] = sc->regs.r6; - env->regs[7] = sc->regs.r7; - env->regs[8] = sc->regs.r8; - env->regs[9] = sc->regs.r9; - env->regs[10] = sc->regs.r10; - env->regs[11] = sc->regs.r11; - env->regs[12] = sc->regs.r12; - env->regs[13] = sc->regs.r13; - env->regs[14] = sc->usp; - env->regs[15] = sc->regs.acr; -} - -static struct target_signal_frame *get_sigframe(CPUState *env, int framesize) -{ - uint8_t *sp; + __get_user(env->regs[0], &sc->regs.r0); + __get_user(env->regs[1], &sc->regs.r1); + __get_user(env->regs[2], &sc->regs.r2); + __get_user(env->regs[3], &sc->regs.r3); + __get_user(env->regs[4], &sc->regs.r4); + __get_user(env->regs[5], &sc->regs.r5); + __get_user(env->regs[6], &sc->regs.r6); + __get_user(env->regs[7], &sc->regs.r7); + __get_user(env->regs[8], &sc->regs.r8); + __get_user(env->regs[9], &sc->regs.r9); + __get_user(env->regs[10], &sc->regs.r10); + __get_user(env->regs[11], &sc->regs.r11); + __get_user(env->regs[12], &sc->regs.r12); + __get_user(env->regs[13], &sc->regs.r13); + __get_user(env->regs[14], &sc->usp); + __get_user(env->regs[15], &sc->regs.acr); + __get_user(env->pregs[PR_MOF], &sc->regs.mof); + __get_user(env->pregs[PR_SRP], &sc->regs.srp); + __get_user(env->pc, &sc->regs.erp); +} + +static abi_ulong get_sigframe(CPUState *env, int framesize) +{ + abi_ulong sp; /* Align the stack downwards to 4. */ - sp = (uint8_t *) (env->regs[R_SP] & ~3); - return (void *)(sp - framesize); + sp = (env->regs[R_SP] & ~3); + return sp - framesize; } static void setup_frame(int sig, struct emulated_sigaction *ka, target_sigset_t *set, CPUState *env) { struct target_signal_frame *frame; + abi_ulong frame_addr; int err = 0; int i; - uint32_t old_usp; - - old_usp = env->regs[R_SP]; - frame = get_sigframe(env, sizeof *frame); - if (!lock_user_struct(VERIFY_WRITE, frame, (abi_ulong)frame, 1)) + frame_addr = get_sigframe(env, sizeof *frame); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) goto badframe; /* @@ -2825,10 +2826,10 @@ static void setup_frame(int sig, struct emulated_sigaction *ka, /* Link SRP so the guest returns through the trampoline. */ env->pregs[PR_SRP] = (uint32_t) &frame->retcode[0]; - unlock_user_struct(frame, (abi_ulong)frame, 0); + unlock_user_struct(frame, frame_addr, 1); return; badframe: - unlock_user_struct(frame, (abi_ulong)frame, 0); + unlock_user_struct(frame, frame_addr, 1); force_sig(TARGET_SIGSEGV); } @@ -2842,13 +2843,14 @@ static void setup_rt_frame(int sig, struct emulated_sigaction *ka, long do_sigreturn(CPUState *env) { struct target_signal_frame *frame; + abi_ulong frame_addr; target_sigset_t target_set; sigset_t set; int i; - frame = (void *) env->regs[R_SP]; + frame_addr = env->regs[R_SP]; /* Make sure the guest isn't playing games. */ - if (!lock_user_struct(VERIFY_READ, frame, (abi_ulong)frame, 1)) + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) goto badframe; /* Restore blocked signals */ @@ -2862,14 +2864,13 @@ long do_sigreturn(CPUState *env) sigprocmask(SIG_SETMASK, &set, NULL); restore_sigcontext(&frame->sc, env); - /* Compensate -2 for the syscall return path advancing brk. */ - env->pc = frame->sc.regs.erp - 2; - env->pregs[PR_SRP] = frame->sc.regs.srp; + /* Compensate for the syscall return path advancing brk. */ + env->pc -= 2; - unlock_user_struct(frame, (abi_ulong)frame, 0); + unlock_user_struct(frame, frame_addr, 0); return env->regs[10]; badframe: - unlock_user_struct(frame, (abi_ulong)frame, 0); + unlock_user_struct(frame, frame_addr, 0); force_sig(TARGET_SIGSEGV); } |