X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fsignal-common.h;h=03d2b603fb8444647eed988930234ea79887e76d;hb=c3fc4ab36d495f50ccc89986fe32eeabc2549fa1;hp=bb3c631b808eeba2218d03657b107b9814f80259;hpb=a007b1f1c764c08896bc574fbd33e19ce898a188;p=pandora-kernel.git

diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h
index bb3c631b808e..03d2b603fb84 100644
--- a/arch/mips/kernel/signal-common.h
+++ b/arch/mips/kernel/signal-common.h
@@ -8,145 +8,23 @@
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
  */
 
+#ifndef __SIGNAL_COMMON_H
+#define __SIGNAL_COMMON_H
 
-static inline int
-setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
-{
-	int err = 0;
-	int i;
-
-	err |= __put_user(regs->cp0_epc, &sc->sc_pc);
-
-	err |= __put_user(0, &sc->sc_regs[0]);
-	for (i = 1; i < 32; i++)
-		err |= __put_user(regs->regs[i], &sc->sc_regs[i]);
-
-	err |= __put_user(regs->hi, &sc->sc_mdhi);
-	err |= __put_user(regs->lo, &sc->sc_mdlo);
-	if (cpu_has_dsp) {
-		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(rddsp(DSP_MASK), &sc->sc_dsp);
-	}
-
-	err |= __put_user(!!used_math(), &sc->sc_used_math);
-
-	if (used_math()) {
-		/*
-		 * Save FPU state to signal context.  Signal handler
-		 * will "inherit" current FPU state.
-		 */
-		preempt_disable();
-
-		if (!is_fpu_owner()) {
-			own_fpu();
-			restore_fp(current);
-		}
-		err |= save_fp_context(sc);
-
-		preempt_enable();
-	}
-	return err;
-}
-
-static inline int
-restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
-{
-	unsigned int used_math;
-	unsigned long treg;
-	int err = 0;
-	int i;
-
-	/* Always make any pending restarted system calls return -EINTR */
-	current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
-	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);
-	}
-
-	for (i = 1; i < 32; i++)
-		err |= __get_user(regs->regs[i], &sc->sc_regs[i]);
-
-	err |= __get_user(used_math, &sc->sc_used_math);
-	conditional_used_math(used_math);
-
-	preempt_disable();
-
-	if (used_math()) {
-		/* restore fpu context if we have used it before */
-		own_fpu();
-		err |= restore_fp_context(sc);
-	} else {
-		/* signal handler may have used FPU.  Give it up. */
-		lose_fpu();
-	}
-
-	preempt_enable();
-
-	return err;
-}
+/*
+ * handle hardware context
+ */
+extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *);
+extern int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
 
 /*
  * Determine which stack to use..
  */
-static inline void __user *
-get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
-{
-	unsigned long sp;
-
-	/* Default to using normal stack */
-	sp = regs->regs[29];
-
-	/*
-	 * FPU emulator may have it's own trampoline active just
-	 * above the user stack, 16-bytes before the next lowest
-	 * 16 byte boundary.  Try to avoid trashing it.
-	 */
-	sp -= 32;
-
-	/* This is the X/Open sanctioned signal stack switching.  */
-	if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags (sp) == 0))
-		sp = current->sas_ss_sp + current->sas_ss_size;
-
-	return (void __user *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? ~(cpu_icache_line_size()-1) : ALMASK));
-}
-
-static inline int install_sigtramp(unsigned int __user *tramp,
-	unsigned int syscall)
-{
-	int err;
-
-	/*
-	 * Set up the return code ...
-	 *
-	 *         li      v0, __NR__foo_sigreturn
-	 *         syscall
-	 */
-
-	err = __put_user(0x24020000 + syscall, tramp + 0);
-	err |= __put_user(0x0000000c          , tramp + 1);
-	if (ICACHE_REFILLS_WORKAROUND_WAR) {
-		err |= __put_user(0, tramp + 2);
-		err |= __put_user(0, tramp + 3);
-		err |= __put_user(0, tramp + 4);
-		err |= __put_user(0, tramp + 5);
-		err |= __put_user(0, tramp + 6);
-		err |= __put_user(0, tramp + 7);
-	}
-	flush_cache_sigtramp((unsigned long) tramp);
+extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
+				 size_t frame_size);
+/*
+ * install trampoline code to get back from the sig handler
+ */
+extern int install_sigtramp(unsigned int __user *tramp, unsigned int syscall);
 
-	return err;
-}
+#endif	/* __SIGNAL_COMMON_H */