Skip to content

R
riscv-gcc-1
Commit 0b4ce21b by Georg-Johann Lay Committed by Georg-Johann Lay
Options

* config/avr/lib1funcs.S (__ashrdi3, __lshrdi3, __ashldi3) 

	(__rotldi3): Shift bytewise if applicable.

From-SVN: r196431
parent 2f4e77e8
Showing with 59 additions and 34 deletions
libgcc/ChangeLog
2013-03-04 Georg-Johann Lay <avr@gjlay.de>
* config/avr/lib1funcs.S (__ashrdi3, __lshrdi3, __ashldi3)
(__rotldi3): Shift bytewise if applicable.
2013-03-01 James Greenhalgh <james.greenhalgh@arm.com> 2013-03-01 James Greenhalgh <james.greenhalgh@arm.com>
* config/aarch64/sync-cache.c * config/aarch64/sync-cache.c
......
libgcc/config/avr/lib1funcs.S
...@@ -3030,32 +3030,31 @@ ENDF __bswapdi2 ...@@ -3030,32 +3030,31 @@ ENDF __bswapdi2
;; Arithmetic shift right ;; Arithmetic shift right
;; r25:r18 = ashr64 (r25:r18, r17:r16) ;; r25:r18 = ashr64 (r25:r18, r17:r16)
DEFUN __ashrdi3 DEFUN __ashrdi3
push r16 bst r25, 7
andi r16, 63 bld __zero_reg__, 0
breq 2f ;; FALLTHRU
1: asr r25
ror r24
ror r23
ror r22
ror r21
ror r20
ror r19
ror r18
dec r16
brne 1b
2: pop r16
ret
ENDF __ashrdi3 ENDF __ashrdi3
#endif /* defined (L_ashrdi3) */
#if defined (L_lshrdi3)
;; Logic shift right ;; Logic shift right
;; r25:r18 = lshr64 (r25:r18, r17:r16) ;; r25:r18 = lshr64 (r25:r18, r17:r16)
DEFUN __lshrdi3 DEFUN __lshrdi3
lsr __zero_reg__
sbc __tmp_reg__, __tmp_reg__
push r16 push r16
andi r16, 63 0: cpi r16, 8
breq 2f brlo 2f
1: lsr r25 subi r16, 8
mov r18, r19
mov r19, r20
mov r20, r21
mov r21, r22
mov r22, r23
mov r23, r24
mov r24, r25
mov r25, __tmp_reg__
rjmp 0b
1: asr __tmp_reg__
ror r25
ror r24 ror r24
ror r23 ror r23
ror r22 ror r22
...@@ -3063,20 +3062,30 @@ DEFUN __lshrdi3 ...@@ -3063,20 +3062,30 @@ DEFUN __lshrdi3
ror r20 ror r20
ror r19 ror r19
ror r18 ror r18
dec r16 2: dec r16
brne 1b brpl 1b
2: pop r16 pop r16
ret ret
ENDF __lshrdi3 ENDF __lshrdi3
#endif /* defined (L_lshrdi3) */ #endif /* defined (L_ashrdi3) */
#if defined (L_ashldi3) #if defined (L_ashldi3)
;; Shift left ;; Shift left
;; r25:r18 = ashl64 (r25:r18, r17:r16) ;; r25:r18 = ashl64 (r25:r18, r17:r16)
DEFUN __ashldi3 DEFUN __ashldi3
push r16 push r16
andi r16, 63 0: cpi r16, 8
breq 2f brlo 2f
mov r25, r24
mov r24, r23
mov r23, r22
mov r22, r21
mov r21, r20
mov r20, r19
mov r19, r18
clr r18
subi r16, 8
rjmp 0b
1: lsl r18 1: lsl r18
rol r19 rol r19
rol r20 rol r20
...@@ -3085,9 +3094,9 @@ DEFUN __ashldi3 ...@@ -3085,9 +3094,9 @@ DEFUN __ashldi3
rol r23 rol r23
rol r24 rol r24
rol r25 rol r25
dec r16 2: dec r16
brne 1b brpl 1b
2: pop r16 pop r16
ret ret
ENDF __ashldi3 ENDF __ashldi3
#endif /* defined (L_ashldi3) */ #endif /* defined (L_ashldi3) */
...@@ -3097,8 +3106,19 @@ ENDF __ashldi3 ...@@ -3097,8 +3106,19 @@ ENDF __ashldi3
;; r25:r18 = rotl64 (r25:r18, r17:r16) ;; r25:r18 = rotl64 (r25:r18, r17:r16)
DEFUN __rotldi3 DEFUN __rotldi3
push r16 push r16
andi r16, 63 0: cpi r16, 8
breq 2f brlo 2f
subi r16, 8
mov __tmp_reg__, r25
mov r25, r24
mov r24, r23
mov r23, r22
mov r22, r21
mov r21, r20
mov r20, r19
mov r19, r18
mov r18, __tmp_reg__
rjmp 0b
1: lsl r18 1: lsl r18
rol r19 rol r19
rol r20 rol r20
...@@ -3108,9 +3128,9 @@ DEFUN __rotldi3 ...@@ -3108,9 +3128,9 @@ DEFUN __rotldi3
rol r24 rol r24
rol r25 rol r25
adc r18, __zero_reg__ adc r18, __zero_reg__
dec r16 2: dec r16
brne 1b brpl 1b
2: pop r16 pop r16
ret ret
ENDF __rotldi3 ENDF __rotldi3
#endif /* defined (L_rotldi3) */ #endif /* defined (L_rotldi3) */
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment