ARM: libroot: fix setjmp/longjmp implementation.

Just a couple of lines of code, but a head full of pain ;-) Finally
got it right and now KDL can properly recover from invalid accesses.

src/system/libroot/posix/arch/arm/siglongjmp.S

@@ -5,16 +5,13 @@
 
 #include <asm_defs.h>
 
-//#include "setjmp_internal.h"
-
 /* int __siglongjmp(jmp_buf buffer, int value) */
 FUNCTION(siglongjmp):
 FUNCTION(longjmp):
 FUNCTION(_longjmp):
-	str	r1,[r0]
+	str	r1, [r0, #4]
-        ldmia	r0,{r0-r14}
+        ldmia	r0, {r0-r14}
-	bx	lr
+	b	__longjmp_return
-//	bl	__longjmp_return
 FUNCTION_END(siglongjmp)
 FUNCTION_END(longjmp)
 FUNCTION_END(_longjmp)

src/system/libroot/posix/arch/arm/sigsetjmp.S

@@ -5,33 +5,25 @@
 
 #include <asm_defs.h>
 
-//#include "setjmp_internal.h"
-
 /* int sigsetjmp(jmp_buf buffer, int saveMask) */
 FUNCTION(__sigsetjmp):
 FUNCTION(sigsetjmp):
-	stmdb   sp!, {r4, lr}
+	stmia	r0, {r0-r14}
-        stmia   r0, {r0-r14}
+	mrs	r1, cpsr
-        str     lr,[r0, #60]
+	str	r1, [r0, #64]
-        mrs     r1,cpsr
+	ldr	r1, [r0, #4]
-        str     r1,[r0,#64]
+	b	__setjmp_save_sigs
-        ldr     r1,[r0,#4]
-        mov     r0, #0
-
-	bl		__setjmp_save_sigs
-	ldmia   sp!, {r4, pc}
-FUNCTION_END(__sigsetjmp)
 FUNCTION_END(sigsetjmp)
+FUNCTION_END(__sigsetjmp)
 
 
 /* int setjmp(jmp_buf buffer) */
 FUNCTION(setjmp):
-        stmia   r0, {r0-r14}
+	stmia	r0, {r0-r14}
-        str     lr,[r0, #60]
+	mrs	r1, cpsr
-        mrs     r1,cpsr
+	str	r1, [r0, #64]
-        str     r1,[r0,#64]
+	ldr	r1, [r0, #4]
-        ldr     r1,[r0,#4]
+	mov	r0, #0
-        mov     r0, #0
 	bx	lr
 FUNCTION_END(setjmp)