diff options
Diffstat (limited to 'arch/arm/lib/memmove.S')
| -rw-r--r-- | arch/arm/lib/memmove.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/lib/memmove.S b/arch/arm/lib/memmove.S index d1fc0c0c342c..69a9d47fc5ab 100644 --- a/arch/arm/lib/memmove.S +++ b/arch/arm/lib/memmove.S @@ -12,6 +12,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> +#include <asm/unwind.h> .text @@ -27,12 +28,17 @@ */ ENTRY(memmove) + UNWIND( .fnstart ) subs ip, r0, r1 cmphi r2, ip bls memcpy stmfd sp!, {r0, r4, lr} + UNWIND( .fnend ) + + UNWIND( .fnstart ) + UNWIND( .save {r0, r4, lr} ) @ in first stmfd block add r1, r1, r2 add r0, r0, r2 subs r2, r2, #4 @@ -45,6 +51,11 @@ ENTRY(memmove) 1: subs r2, r2, #(28) stmfd sp!, {r5 - r8} + UNWIND( .fnend ) + + UNWIND( .fnstart ) + UNWIND( .save {r0, r4, lr} ) + UNWIND( .save {r5 - r8} ) @ in second stmfd block blt 5f CALGN( ands ip, r0, #31 ) @@ -97,6 +108,10 @@ ENTRY(memmove) CALGN( bcs 2b ) 7: ldmfd sp!, {r5 - r8} + UNWIND( .fnend ) @ end of second stmfd block + + UNWIND( .fnstart ) + UNWIND( .save {r0, r4, lr} ) @ still in first stmfd block 8: movs r2, r2, lsl #31 ldrneb r3, [r1, #-1]! @@ -124,10 +139,13 @@ ENTRY(memmove) ldr r3, [r1, #0] beq 17f blt 18f + UNWIND( .fnend ) .macro backward_copy_shift push pull + UNWIND( .fnstart ) + UNWIND( .save {r0, r4, lr} ) @ still in first stmfd block subs r2, r2, #28 blt 14f @@ -137,6 +155,11 @@ ENTRY(memmove) CALGN( bcc 15f ) 11: stmfd sp!, {r5 - r9} + UNWIND( .fnend ) + + UNWIND( .fnstart ) + UNWIND( .save {r0, r4, lr} ) + UNWIND( .save {r5 - r9} ) @ in new second stmfd block PLD( pld [r1, #-4] ) PLD( subs r2, r2, #96 ) @@ -171,6 +194,10 @@ ENTRY(memmove) PLD( bge 13b ) ldmfd sp!, {r5 - r9} + UNWIND( .fnend ) @ end of the second stmfd block + + UNWIND( .fnstart ) + UNWIND( .save {r0, r4, lr} ) @ still in first stmfd block 14: ands ip, r2, #28 beq 16f @@ -186,6 +213,7 @@ ENTRY(memmove) 16: add r1, r1, #(\pull / 8) b 8b + UNWIND( .fnend ) .endm |