Thumb-2: Implement the unified arch/arm/lib functions
This patch adds the ARM/Thumb-2 unified support for the arch/arm/lib/*
files.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm/lib/findbit.S b/arch/arm/lib/findbit.S
index 8c4defc..1e4cbd4 100644
--- a/arch/arm/lib/findbit.S
+++ b/arch/arm/lib/findbit.S
@@ -25,7 +25,10 @@
teq r1, #0
beq 3f
mov r2, #0
-1: ldrb r3, [r0, r2, lsr #3]
+1:
+ ARM( ldrb r3, [r0, r2, lsr #3] )
+ THUMB( lsr r3, r2, #3 )
+ THUMB( ldrb r3, [r0, r3] )
eors r3, r3, #0xff @ invert bits
bne .L_found @ any now set - found zero bit
add r2, r2, #8 @ next bit pointer
@@ -44,7 +47,9 @@
beq 3b
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
- ldrb r3, [r0, r2, lsr #3]
+ ARM( ldrb r3, [r0, r2, lsr #3] )
+ THUMB( lsr r3, r2, #3 )
+ THUMB( ldrb r3, [r0, r3] )
eor r3, r3, #0xff @ now looking for a 1 bit
movs r3, r3, lsr ip @ shift off unused bits
bne .L_found
@@ -61,7 +66,10 @@
teq r1, #0
beq 3f
mov r2, #0
-1: ldrb r3, [r0, r2, lsr #3]
+1:
+ ARM( ldrb r3, [r0, r2, lsr #3] )
+ THUMB( lsr r3, r2, #3 )
+ THUMB( ldrb r3, [r0, r3] )
movs r3, r3
bne .L_found @ any now set - found zero bit
add r2, r2, #8 @ next bit pointer
@@ -80,7 +88,9 @@
beq 3b
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
- ldrb r3, [r0, r2, lsr #3]
+ ARM( ldrb r3, [r0, r2, lsr #3] )
+ THUMB( lsr r3, r2, #3 )
+ THUMB( ldrb r3, [r0, r3] )
movs r3, r3, lsr ip @ shift off unused bits
bne .L_found
orr r2, r2, #7 @ if zero, then no bits here
@@ -95,7 +105,9 @@
beq 3f
mov r2, #0
1: eor r3, r2, #0x18 @ big endian byte ordering
- ldrb r3, [r0, r3, lsr #3]
+ ARM( ldrb r3, [r0, r3, lsr #3] )
+ THUMB( lsr r3, #3 )
+ THUMB( ldrb r3, [r0, r3] )
eors r3, r3, #0xff @ invert bits
bne .L_found @ any now set - found zero bit
add r2, r2, #8 @ next bit pointer
@@ -111,7 +123,9 @@
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
eor r3, r2, #0x18 @ big endian byte ordering
- ldrb r3, [r0, r3, lsr #3]
+ ARM( ldrb r3, [r0, r3, lsr #3] )
+ THUMB( lsr r3, #3 )
+ THUMB( ldrb r3, [r0, r3] )
eor r3, r3, #0xff @ now looking for a 1 bit
movs r3, r3, lsr ip @ shift off unused bits
bne .L_found
@@ -125,7 +139,9 @@
beq 3f
mov r2, #0
1: eor r3, r2, #0x18 @ big endian byte ordering
- ldrb r3, [r0, r3, lsr #3]
+ ARM( ldrb r3, [r0, r3, lsr #3] )
+ THUMB( lsr r3, #3 )
+ THUMB( ldrb r3, [r0, r3] )
movs r3, r3
bne .L_found @ any now set - found zero bit
add r2, r2, #8 @ next bit pointer
@@ -141,7 +157,9 @@
ands ip, r2, #7
beq 1b @ If new byte, goto old routine
eor r3, r2, #0x18 @ big endian byte ordering
- ldrb r3, [r0, r3, lsr #3]
+ ARM( ldrb r3, [r0, r3, lsr #3] )
+ THUMB( lsr r3, #3 )
+ THUMB( ldrb r3, [r0, r3] )
movs r3, r3, lsr ip @ shift off unused bits
bne .L_found
orr r2, r2, #7 @ if zero, then no bits here