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yaml
---
r: 47702
b: refs/heads/master
c: a007b1f
h: refs/heads/master
v: v3
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Franck Bui-Huu authored and Ralf Baechle committed Feb 10, 2007
1 parent 29e09f4 commit 0063ea5
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Showing 2 changed files with 22 additions and 46 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 4ed3a77f38c023658784804cb39a7ce18063dc88
refs/heads/master: a007b1f1c764c08896bc574fbd33e19ce898a188
66 changes: 21 additions & 45 deletions trunk/arch/mips/kernel/signal-common.h
Original file line number Diff line number Diff line change
Expand Up @@ -13,22 +13,13 @@ 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);

#define save_gp_reg(i) do { \
err |= __put_user(regs->regs[i], &sc->sc_regs[i]); \
} while(0)
__put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2);
save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6);
save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10);
save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18);
save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22);
save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30);
save_gp_reg(31);
#undef save_gp_reg
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);
Expand All @@ -44,24 +35,21 @@ setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)

err |= __put_user(!!used_math(), &sc->sc_used_math);

if (!used_math())
goto out;

/*
* Save FPU state to signal context. Signal handler will "inherit"
* current FPU state.
*/
preempt_disable();

if (!is_fpu_owner()) {
own_fpu();
restore_fp(current);
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();
}
err |= save_fp_context(sc);

preempt_enable();

out:
return err;
}

Expand All @@ -71,6 +59,7 @@ 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;
Expand All @@ -88,21 +77,8 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
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]); \
} while(0)
restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3);
restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6);
restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9);
restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12);
restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15);
restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18);
restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21);
restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24);
restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27);
restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30);
restore_gp_reg(31);
#undef restore_gp_reg
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);
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