Support the MIPS32 / MIPS64 DSP ASE.

[linux-2.6-block.git] / arch / mips / kernel / signal32.c

diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 5e7d0fa026729fe647a921f47050a968dba833e9..8639e24732a55ce81891387a36d179cb97f61c42 100644 (file)
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -21,6 +21,7 @@
 #include <linux/suspend.h>
 #include <linux/compiler.h>
 
+#include <asm/abi.h>
 #include <asm/asm.h>
 #include <linux/bitops.h>
 #include <asm/cacheflush.h>
@@ -334,8 +335,9 @@ asmlinkage int sys32_sigaltstack(nabi_no_regargs struct pt_regs regs)
 
 static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 *sc)
 {
+       u32 used_math;
        int err = 0;
-       __u32 used_math;
+       s32 treg;
 
        /* Always make any pending restarted system calls return -EINTR */
        current_thread_info()->restart_block.fn = do_no_restart_syscall;
@@ -343,6 +345,15 @@ static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 *sc)
        err |= __get_user(regs->cp0_epc, &sc->sc_pc);
        err |= __get_user(regs->hi, &sc->sc_mdhi);
        err |= __get_user(regs->lo, &sc->sc_mdlo);
+       if (cpu_has_dsp) {
+               err |= __get_user(treg, &sc->sc_hi1); mthi1(treg);
+               err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg);
+               err |= __get_user(treg, &sc->sc_hi2); mthi2(treg);
+               err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg);
+               err |= __get_user(treg, &sc->sc_hi3); mthi3(treg);
+               err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);
+               err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
+       }
 
 #define restore_gp_reg(i) do {                                         \
        err |= __get_user(regs->regs[i], &sc->sc_regs[i]);              \
@@ -562,8 +573,15 @@ static inline int setup_sigcontext32(struct pt_regs *regs,
 
        err |= __put_user(regs->hi, &sc->sc_mdhi);
        err |= __put_user(regs->lo, &sc->sc_mdlo);
-       err |= __put_user(regs->cp0_cause, &sc->sc_cause);
-       err |= __put_user(regs->cp0_badvaddr, &sc->sc_badvaddr);
+       if (cpu_has_dsp) {
+               err |= __put_user(rddsp(DSP_MASK), &sc->sc_hi1);
+               err |= __put_user(mfhi1(), &sc->sc_hi1);
+               err |= __put_user(mflo1(), &sc->sc_lo1);
+               err |= __put_user(mfhi2(), &sc->sc_hi2);
+               err |= __put_user(mflo2(), &sc->sc_lo2);
+               err |= __put_user(mfhi3(), &sc->sc_hi3);
+               err |= __put_user(mflo3(), &sc->sc_lo3);
+       }
 
        err |= __put_user(!!used_math(), &sc->sc_used_math);
 
@@ -613,7 +631,7 @@ static inline void *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
        return (void *)((sp - frame_size) & ALMASK);
 }
 
-static inline void setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
+void setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
                               int signr, sigset_t *set)
 {
        struct sigframe *frame;
@@ -666,9 +684,7 @@ give_sigsegv:
        force_sigsegv(signr, current);
 }
 
-static inline void setup_rt_frame(struct k_sigaction * ka,
-                                 struct pt_regs *regs, int signr,
-                                 sigset_t *set, siginfo_t *info)
+void setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr,       sigset_t *set, siginfo_t *info)
 {
        struct rt_sigframe32 *frame;
        int err = 0;
@@ -759,9 +775,9 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info,
        regs->regs[0] = 0;              /* Don't deal with this again.  */
 
        if (ka->sa.sa_flags & SA_SIGINFO)
-               setup_rt_frame(ka, regs, sig, oldset, info);
+               current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info);
        else
-               setup_frame(ka, regs, sig, oldset);
+               current->thread.abi->setup_frame(ka, regs, sig, oldset);
 
        spin_lock_irq(&current->sighand->siglock);
        sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);