i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

remove unused byteswap functions.

Browse Source 
We need these only for gcc2, which doesn't have builtins.
Only swapping floats and doubles remains to implement for all
architectures.

Change-Id: I60e39ad42d4ef762f3324f934f2996dde1412f1a
Reviewed-on: https://review.haiku-os.org/c/1182
Reviewed-by: waddlesplash <[email protected]>
This commit is contained in:
PulkoMandy
2019-03-26 20:41:46 +00:00
committed by waddlesplash
parent 4b2da9c371
commit c3ba570c08
3 changed files with 26 additions and 119 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/system/libroot/os/arch/m68k/byteorder.S
+26 -57
View File
@@ -7,73 +7,42 @@
.text
/* uint16 __swap_int16(uint16 value)
*/
FUNCTION(__swap_int16):
moveq.l #0,%d0
/* 32-bit aligned stack! */
move.l (4,%a7),%d1
move.b %d1,%d0
lsr.w #8,%d1
lsl.w #8,%d0
move.b %d1,%d0
rts
FUNCTION_END(__swap_int16)
/* uint32 __swap_int32(uint32 value)
*/
FUNCTION(__swap_int32):
/* moveq.l #0,%d0*/
move.b (7,%a7),%d0
lsl.l #8,%d0
move.b (6,%a7),%d0
lsl.l #8,%d0
move.b (5,%a7),%d0
lsl.l #8,%d0
move.b (4,%a7),%d0
rts
FUNCTION_END(__swap_int32)
/* uint64 __swap_int64(uint64 value)
*/
FUNCTION(__swap_int64):
/* moveq.l #0,%d0*/
move.b (7,%a7),%d1
lsl.l #8,%d1
move.b (6,%a7),%d1
lsl.l #8,%d1
move.b (5,%a7),%d1
lsl.l #8,%d1
move.b (4,%a7),%d1
/**/
move.b (11,%a7),%d0
lsl.l #8,%d0
move.b (10,%a7),%d0
lsl.l #8,%d0
move.b (9,%a7),%d0
lsl.l #8,%d0
move.b (8,%a7),%d0
rts
FUNCTION_END(__swap_int64)
/* TODO: The following functions can surely be optimized. A simple optimization
* would be to define macros with the contents of the __swap_int{32,64}
* functions and use those instead of calling the functions.
*/
/* float __swap_float(float value)
*/
FUNCTION(__swap_float):
jmp __swap_int32
//rts
/* moveq.l #0,%d0*/
move.b (7,%a7),%d0
lsl.l #8,%d0
move.b (6,%a7),%d0
lsl.l #8,%d0
move.b (5,%a7),%d0
lsl.l #8,%d0
move.b (4,%a7),%d0
rts
FUNCTION_END(__swap_float)
/* double __swap_double(double value)
*/
FUNCTION(__swap_double):
jmp __swap_int32
//rts
/* moveq.l #0,%d0*/
move.b (7,%a7),%d1
lsl.l #8,%d1
move.b (6,%a7),%d1
lsl.l #8,%d1
move.b (5,%a7),%d1
lsl.l #8,%d1
move.b (4,%a7),%d1
/**/
move.b (11,%a7),%d0
lsl.l #8,%d0
move.b (10,%a7),%d0
lsl.l #8,%d0
move.b (9,%a7),%d0
lsl.l #8,%d0
move.b (8,%a7),%d0
rts
#warning M68K: XXX:check sizeof(double)
FUNCTION_END(__swap_double)
src/system/libroot/os/arch/ppc/byteorder.S
-40
View File
@@ -7,46 +7,6 @@
.text
/* uint16 __swap_int16(uint16 value)
* r3
*/
FUNCTION(__swap_int16):
rlwinm %r4, %r3, 8, 16, 23 // byte 4 -> byte 3 (clear other bits)
rlwimi %r4, %r3, 24, 24, 31 // byte 3 -> byte 4 (copy into)
mr %r3, %r4 // copy to result register
blr
/* uint32 __swap_int32(uint32 value)
* r3
*/
FUNCTION(__swap_int32):
rlwinm %r4, %r3, 24, 0, 31 // byte 4 to 1, byte 2 to 3
rlwimi %r4, %r3, 8, 8, 15 // byte 3 to 2
rlwimi %r4, %r3, 8, 24, 31 // byte 1 to 4
mr %r3, %r4
blr
/* uint64 __swap_int64(uint64 value)
* r3/r4
*/
FUNCTION(__swap_int64):
rlwinm %r5, %r3, 24, 0, 31 // byte 4 to 5, byte 2 to 7
rlwimi %r5, %r3, 8, 8, 15 // byte 3 to 6
rlwimi %r5, %r3, 8, 24, 31 // byte 1 to 8
rlwinm %r3, %r4, 24, 0, 31 // byte 8 to 1, byte 6 to 3
rlwimi %r3, %r4, 8, 8, 15 // byte 7 to 2
rlwimi %r3, %r4, 8, 24, 31 // byte 5 to 4
mr %r4, %r5 // copy lower 32 bits
blr
/* TODO: The following functions can surely be optimized. A simple optimization
* would be to define macros with the contents of the __swap_int{32,64}
* functions and use those instead of calling the functions.
*/
/* float __swap_float(float value)
* f1
*/
src/system/libroot/os/arch/x86_64/byteorder.S
-22
View File
@@ -7,28 +7,6 @@
#include <asm_defs.h>
/* uint16 __swap_int16(uint16 value) */
FUNCTION(__swap_int16):
movl %edi, %eax
bswap %eax
shr $16, %eax
ret
FUNCTION_END(__swap_int16)
/* uint32 __swap_int32(uint32 value) */
FUNCTION(__swap_int32):
movl %edi, %eax
bswap %eax
ret
FUNCTION_END(__swap_int32)
/* uint64 __swap_int64(uint64 value) */
FUNCTION(__swap_int64):
movq %rdi, %rax
bswap %rax
ret
FUNCTION_END(__swap_int64)
/* float __swap_float(float value) */
FUNCTION(__swap_float):
sub $8, %rsp