diff options
| author | Michael Neuling <mikey@neuling.org> | 2008-01-18 05:50:30 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-01-25 12:52:50 +0100 |
| commit | c3b75bd7bbf4a0438dc140033b80657995fd30ed (patch) | |
| tree | 4621ebbf620d6262fccf61811824386b9ba50915 /arch/powerpc/kernel | |
| parent | [POWERPC] Fix a couple of copyright symbols (diff) | |
| download | linux-c3b75bd7bbf4a0438dc140033b80657995fd30ed.tar.xz linux-c3b75bd7bbf4a0438dc140033b80657995fd30ed.zip | |
[POWERPC] Make setjmp/longjmp code usable outside of xmon
This makes the setjmp/longjmp code used by xmon, generically available
to other code. It also removes the requirement for debugger hooks to
be only called on 0x300 (data storage) exception.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/misc.S | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S index 74ce0c7a7b1e..7b9160220698 100644 --- a/arch/powerpc/kernel/misc.S +++ b/arch/powerpc/kernel/misc.S @@ -8,6 +8,8 @@ * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com) * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com) * + * setjmp/longjmp code by Paul Mackerras. + * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version @@ -15,6 +17,8 @@ */ #include <asm/ppc_asm.h> #include <asm/unistd.h> +#include <asm/asm-compat.h> +#include <asm/asm-offsets.h> .text @@ -51,3 +55,64 @@ _GLOBAL(kernel_execve) bnslr neg r3,r3 blr + +_GLOBAL(setjmp) + mflr r0 + PPC_STL r0,0(r3) + PPC_STL r1,SZL(r3) + PPC_STL r2,2*SZL(r3) + mfcr r0 + PPC_STL r0,3*SZL(r3) + PPC_STL r13,4*SZL(r3) + PPC_STL r14,5*SZL(r3) + PPC_STL r15,6*SZL(r3) + PPC_STL r16,7*SZL(r3) + PPC_STL r17,8*SZL(r3) + PPC_STL r18,9*SZL(r3) + PPC_STL r19,10*SZL(r3) + PPC_STL r20,11*SZL(r3) + PPC_STL r21,12*SZL(r3) + PPC_STL r22,13*SZL(r3) + PPC_STL r23,14*SZL(r3) + PPC_STL r24,15*SZL(r3) + PPC_STL r25,16*SZL(r3) + PPC_STL r26,17*SZL(r3) + PPC_STL r27,18*SZL(r3) + PPC_STL r28,19*SZL(r3) + PPC_STL r29,20*SZL(r3) + PPC_STL r30,21*SZL(r3) + PPC_STL r31,22*SZL(r3) + li r3,0 + blr + +_GLOBAL(longjmp) + PPC_LCMPI r4,0 + bne 1f + li r4,1 +1: PPC_LL r13,4*SZL(r3) + PPC_LL r14,5*SZL(r3) + PPC_LL r15,6*SZL(r3) + PPC_LL r16,7*SZL(r3) + PPC_LL r17,8*SZL(r3) + PPC_LL r18,9*SZL(r3) + PPC_LL r19,10*SZL(r3) + PPC_LL r20,11*SZL(r3) + PPC_LL r21,12*SZL(r3) + PPC_LL r22,13*SZL(r3) + PPC_LL r23,14*SZL(r3) + PPC_LL r24,15*SZL(r3) + PPC_LL r25,16*SZL(r3) + PPC_LL r26,17*SZL(r3) + PPC_LL r27,18*SZL(r3) + PPC_LL r28,19*SZL(r3) + PPC_LL r29,20*SZL(r3) + PPC_LL r30,21*SZL(r3) + PPC_LL r31,22*SZL(r3) + PPC_LL r0,3*SZL(r3) + mtcrf 0x38,r0 + PPC_LL r0,0(r3) + PPC_LL r1,SZL(r3) + PPC_LL r2,2*SZL(r3) + mtlr r0 + mr r3,r4 + blr |