libs/newlib-cygwin
libs
/
newlib-cygwin
mirror of git://sourceware.org/git/newlib-cygwin.git
4
0
Fork 0
Code Issues Projects Releases Wiki Activity

* libc/machine/sh/memset.S (memset, __SHMEDIA__ code): 

Also handle as single quad word when destination ends at last
	byte of first quad word.  Fix byte selection in single quad code.
This commit is contained in:
Joern Rennecke 2002-05-08 17:56:50 +00:00
parent 0dc9d4d7ed
commit 96bff22c5d
2 changed files with 24 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
newlib/ChangeLog
View File

@ -1,3 +1,9 @@
Wed May 8 17:47:35 2002 J"orn Rennecke <joern.rennecke@superh.com>
* libc/machine/sh/memset.S (memset, __SHMEDIA__ code):
Also handle as single quad word when destination ends at last
byte of first quad word. Fix byte selection in single quad code.
2002-05-07 Thomas Fitzsimmons <fitzsim@redhat.com>
* libc/include/sys/stdio.h: New file.
@ -685,14 +691,14 @@ Tue Mar 26 17:17:10 2002 J"orn Rennecke <joern.rennecke@superh.com>
Wed Mar 6 10:24:26 2002 J"orn Rennecke <joern.rennecke@superh.com>
* Makefile.am (lib_a_SOURCES, SH64 case): Add memcpy.S, memset.S
and strcpy.S.
* Makefile.in: Regenerate.
* asm.h (_ENTRY): Set SH5 alignment to 8 bytes.
* libc/machine/sh/Makefile.am (lib_a_SOURCES, SH64 case):
Add memcpy.S, memset.S and strcpy.S.
* libc/machine/sh/Makefile.in: Regenerate.
* libc/machine/sh/asm.h (_ENTRY): Set SH5 alignment to 8 bytes.
(SHHI, SHLO): Define.
* memcpy.S: Add code for SH5.
* memset.S: Likewise.
* strcpy.S: Likewise.
* libc/machine/sh/memset.S: Add code for SH5.
* libc/machine/sh/memset.S: Likewise.
* libc/machine/sh/strcpy.S: Likewise.
2002-02-27 Jeff Johnston <jjohnstn@redhat.com>

20
newlib/libc/machine/sh/memset.S
View File

@ -12,33 +12,35 @@
ENTRY(memset)
#if __SHMEDIA__
pta/l multiquad, tr0
andi r2, 7, r22
ptabs r18, tr2
mshflo.b r3,r3,r3
mperm.w r3, r63, r3
andi r2, 7, r22
add r4, r22, r23
shlri r23, 3, r24
bnei/u r24, 0, tr0
mperm.w r3, r63, r3 // Fill pattern now in every byte of r3
movi 8, r9
bgtu/u r23, r9, tr0
ldlo.q r2, 0, r7
shlli r4, 3, r4
shlli r4, 2, r4
movi -1, r8
SHHI r8, r4, r8
mcmv r7, r8, r22
stlo.q r2, 0, r22
SHHI r8, r4, r8
mcmv r7, r8, r3
stlo.q r2, 0, r3
blink tr2, r63
multiquad:
pta/l lastquad, tr0
stlo.q r2, 0, r3
shlri r23, 3, r24
add r2, r4, r5
beqi/u r24, 1, tr0 // lastquad
pta/l loop, tr1
sub r2, r22, r25
andi r5, -8, r20 // calculate end address and
addi r20, -7*8, r8 // loop end address; This might overflow, so we need
movi 8, r9 // to use a different test before we start the loop
// to use a different test before we start the loop
bge/u r24, r9, tr1 // loop
st.q r25, 8, r3
st.q r20, -8, r3