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Update. 

* sysdeps/powerpc/fpu/s_copysign.S: Use L() instead of local labels.
	* sysdeps/powerpc/submul_1.S: Likewise.
	* sysdeps/powerpc/sub_n.S: Likewise.
	* sysdeps/powerpc/strcpy.S: Likewise.
	* sysdeps/powerpc/strcmp.S: Likewise.
	* sysdeps/powerpc/stpcpy.S: Likewise.
	* sysdeps/powerpc/rshift.S: Likewise.
	* sysdeps/powerpc/mul_1.S: Likewise.
	* sysdeps/powerpc/memset.S: Likewise.
	* sysdeps/powerpc/lshift.S: Likewise.
	* sysdeps/powerpc/addmul_1.S: Likewise.
	* sysdeps/powerpc/add_n.S: Likewise.
cvs/glibc-2-2-branch
Ulrich Drepper 26 years ago
parent
b041ebc280
commit
4e141d64a5
13 changed files with 112 additions and 99 deletions
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  1. 13
      ChangeLog
  2. 16
      sysdeps/powerpc/add_n.S
  3. 10
      sysdeps/powerpc/addmul_1.S
  4. 6
      sysdeps/powerpc/fpu/s_copysign.S
  5. 10
      sysdeps/powerpc/lshift.S
  6. 26
      sysdeps/powerpc/memset.S
  7. 10
      sysdeps/powerpc/mul_1.S
  8. 14
      sysdeps/powerpc/rshift.S
  9. 26
      sysdeps/powerpc/stpcpy.S
  10. 28
      sysdeps/powerpc/strcmp.S
  11. 26
      sysdeps/powerpc/strcpy.S
  12. 16
      sysdeps/powerpc/sub_n.S
  13. 10
      sysdeps/powerpc/submul_1.S

13
ChangeLog
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@ -1,5 +1,18 @@
2000-02-28 Ulrich Drepper <drepper@redhat.com>
* sysdeps/powerpc/fpu/s_copysign.S: Use L() instead of local labels.
* sysdeps/powerpc/submul_1.S: Likewise.
* sysdeps/powerpc/sub_n.S: Likewise.
* sysdeps/powerpc/strcpy.S: Likewise.
* sysdeps/powerpc/strcmp.S: Likewise.
* sysdeps/powerpc/stpcpy.S: Likewise.
* sysdeps/powerpc/rshift.S: Likewise.
* sysdeps/powerpc/mul_1.S: Likewise.
* sysdeps/powerpc/memset.S: Likewise.
* sysdeps/powerpc/lshift.S: Likewise.
* sysdeps/powerpc/addmul_1.S: Likewise.
* sysdeps/powerpc/add_n.S: Likewise.
* sysdeps/unix/start.c: Initialize __errno and add comment
explaining why. Remove K&R compatibility.

16
sysdeps/powerpc/add_n.S
View File

@ -1,5 +1,5 @@
/* Add two limb vectors of equal, non-zero length for PowerPC.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -33,7 +33,7 @@ EALIGN(__mpn_add_n,3,0)
srwi. r7,r6,1
li r10,0
mtctr r7
bt 31,2f
bt 31,L(2)
/* Clear the carry. */
addic r0,r0,0
@ -41,19 +41,19 @@ EALIGN(__mpn_add_n,3,0)
addi r3,r3,-4
addi r4,r4,-4
addi r5,r5,-4
b 0f
b L(0)
2: lwz r7,0(r5)
L(2): lwz r7,0(r5)
lwz r6,0(r4)
addc r6,r6,r7
stw r6,0(r3)
beq 1f
beq L(1)
/* The loop. */
/* Align start of loop to an odd word boundary to guarantee that the
last two words can be fetched in one access (for 601). */
0: lwz r9,4(r4)
L(0): lwz r9,4(r4)
lwz r8,4(r5)
lwzu r6,8(r4)
lwzu r7,8(r5)
@ -61,8 +61,8 @@ EALIGN(__mpn_add_n,3,0)
stw r8,4(r3)
adde r6,r6,r7
stwu r6,8(r3)
bdnz 0b
bdnz L(0)
/* Return the carry. */
1: addze r3,r10
L(1): addze r3,r10
blr
END(__mpn_add_n)

10
sysdeps/powerpc/addmul_1.S
View File

@ -1,5 +1,5 @@
/* Multiply a limb vector by a single limb, for PowerPC.
Copyright (C) 1993, 1994, 1995, 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1993-1995, 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -31,9 +31,9 @@ ENTRY(__mpn_addmul_1)
lwz r9,0(r3)
addc r8,r7,r9
addi r3,r3,-4 /* adjust res_ptr */
bdz 1f
bdz L(1)
0: lwzu r0,4(r4)
L(0): lwzu r0,4(r4)
stwu r8,4(r3)
mullw r8,r0,r6
adde r7,r8,r10
@ -41,9 +41,9 @@ ENTRY(__mpn_addmul_1)
lwz r9,4(r3)
addze r10,r10
addc r8,r7,r9
bdnz 0b
bdnz L(0)
1: stw r8,4(r3)
L(1): stw r8,4(r3)
addze r3,r10
blr
END(__mpn_addmul_1)

6
sysdeps/powerpc/fpu/s_copysign.S
View File

@ -1,5 +1,5 @@
/* Copy a sign bit between floating-point values.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -31,10 +31,10 @@ ENTRY(__copysign)
lwz r3,8(r1)
cmpwi r3,0
addi r1,r1,16
blt 0f
blt L(0)
fabs fp1,fp1
blr
0: fnabs fp1,fp1
L(0): fnabs fp1,fp1
blr
END (__copysign)

10
sysdeps/powerpc/lshift.S
View File

@ -1,5 +1,5 @@
/* Shift a limb left, low level routine.
Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -35,7 +35,7 @@ EALIGN(__mpn_lshift,3,0)
bdz L(end1)
0: lwzu r10,-4(r4)
L(0): lwzu r10,-4(r4)
slw r9,r11,r6
srw r12,r10,r8
or r9,r9,r12
@ -46,7 +46,7 @@ EALIGN(__mpn_lshift,3,0)
srw r12,r11,r8
or r9,r9,r12
stwu r9,-4(r7)
bdnz 0b
bdnz L(0)
L(end1):slw r0,r11,r6
stw r0,-4(r7)
@ -76,7 +76,7 @@ L(end2):slw r0,r10,r6
#define DO_LSHIFT(n) \
mtctr r5; \
0: lwzu r10,-4(r4); \
L(n): lwzu r10,-4(r4); \
slwi r9,r11,n; \
inslwi r9,r10,n,32-n; \
stwu r9,-4(r7); \
@ -85,7 +85,7 @@ L(end2):slw r0,r10,r6
slwi r9,r10,n; \
inslwi r9,r11,n,32-n; \
stwu r9,-4(r7); \
bdnz 0b; \
bdnz L(n); \
b L(end1)
DO_LSHIFT(1)

26
sysdeps/powerpc/memset.S
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@ -1,5 +1,5 @@
/* Optimized memset implementation for PowerPC.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -42,10 +42,10 @@ EALIGN(memset,5,1)
subfic r7,r7,4
add r6,r6,r7
sub r5,r5,r7
bf+ 31,0f
bf+ 31,L(g0)
stb r4,0(r3)
bt 30,L(aligned)
0: sth r4,-2(r6) # 16th instruction from .align
L(g0): sth r4,-2(r6) # 16th instruction from .align
/* take care of case for size < 31 */
L(aligned):
mtcrf 0x01,r5
@ -60,15 +60,15 @@ L(aligned):
sub r5,r5,r7
cmplwi cr1,r7,0x10
mr r8,r6
bf 28,1f
bf 28,L(a1)
stw r4,-4(r8)
stwu r4,-8(r8)
1: blt cr1,2f
L(a1): blt cr1,2f
stw r4,-4(r8) # 32nd instruction from .align
stw r4,-8(r8)
stw r4,-12(r8)
stwu r4,-16(r8)
2: bf 29,L(caligned)
L(a2): bf 29,L(caligned)
stw r4,-4(r8)
/* now aligned to a cache line. */
L(caligned):
@ -81,10 +81,10 @@ L(caligned):
beq L(medium) # we may not actually get to do a full line
clrlwi. r5,r5,27
add r6,r6,r7
0: li r8,-0x40
li r8,-0x40
bdz L(cloopdone) # 48th instruction from .align
3: dcbz r8,r6
L(c3): dcbz r8,r6
stw r4,-4(r6)
stw r4,-8(r6)
stw r4,-12(r6)
@ -95,7 +95,7 @@ L(caligned):
nop # let 601 fetch first 8 instructions of loop
stw r4,-28(r6)
stwu r4,-32(r6)
bdnz 3b
bdnz L(c3)
L(cloopdone):
stw r4,-4(r6)
stw r4,-8(r6)
@ -121,15 +121,15 @@ L(zloopstart):
li r7,0x20
li r8,-0x40
cmplwi cr1,r5,16 # 8
bf 26,0f
bf 26,L(z0)
dcbz 0,r6
addi r6,r6,0x20
0: li r9,-0x20
bf 25,1f
L(z0): li r9,-0x20
bf 25,L(z1)
dcbz 0,r6
dcbz r7,r6
addi r6,r6,0x40 # 16
1: cmplwi cr5,r5,0
L(z1): cmplwi cr5,r5,0
beq L(medium)
L(zloop):
dcbz 0,r6

10
sysdeps/powerpc/mul_1.S
View File

@ -1,5 +1,5 @@
/* Multiply a limb vector by a limb, for PowerPC.
Copyright (C) 1993, 1994, 1995, 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1993-1995, 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -31,16 +31,16 @@ ENTRY(__mpn_mul_1)
mulhwu r10,r0,r6
addi r3,r3,-4 # adjust res_ptr
addic r5,r5,0 # clear cy with dummy insn
bdz 1f
bdz L(1)
0: lwzu r0,4(r4)
L(0): lwzu r0,4(r4)
stwu r7,4(r3)
mullw r8,r0,r6
adde r7,r8,r10
mulhwu r10,r0,r6
bdnz 0b
bdnz L(0)
1: stw r7,4(r3)
L(1): stw r7,4(r3)
addze r3,r10
blr
END(__mpn_mul_1)

14
sysdeps/powerpc/rshift.S
View File

@ -1,5 +1,5 @@
/* Shift a limb right, low level routine.
Copyright (C) 1995, 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1995, 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -31,26 +31,26 @@ ENTRY(__mpn_rshift)
subfic r8,r6,32
lwz r11,0(r4) # load first s1 limb
slw r3,r11,r8 # compute function return value
bdz 1f
bdz L(1)
0: lwzu r10,4(r4)
L(0): lwzu r10,4(r4)
srw r9,r11,r6
slw r12,r10,r8
or r9,r9,r12
stwu r9,4(r7)
bdz 2f
bdz L(2)
lwzu r11,4(r4)
srw r9,r10,r6
slw r12,r11,r8
or r9,r9,r12
stwu r9,4(r7)
bdnz 0b
bdnz L(0)
1: srw r0,r11,r6
L(1): srw r0,r11,r6
stw r0,4(r7)
blr
2: srw r0,r10,r6
L(2): srw r0,r10,r6
stw r0,4(r7)
blr
END(__mpn_rshift)

26
sysdeps/powerpc/stpcpy.S
View File

@ -1,5 +1,5 @@
/* Optimized stpcpy implementation for PowerPC.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -44,24 +44,24 @@ EALIGN(__stpcpy,4,0)
lwz r6,0(r4)
addi r7,r7,-0x101
addi r8,r8,0x7f7f
b 2f
b L(g2)
0: lwzu r10,4(r4)
L(g0): lwzu r10,4(r4)
stwu r6,4(r3)
add r0,r7,r10
nor r9,r8,r10
and. r0,r0,r9
bne- 1f
bne- L(g1)
lwzu r6,4(r4)
stwu r10,4(r3)
2: add r0,r7,r6
L(g2): add r0,r7,r6
nor r9,r8,r6
and. r0,r0,r9
beq+ 0b
beq+ L(g0)
mr r10,r6
/* We've hit the end of the string. Do the rest byte-by-byte. */
1: rlwinm. r0,r10,8,24,31
L(g1): rlwinm. r0,r10,8,24,31
stbu r0,4(r3)
beqlr-
rlwinm. r0,r10,16,24,31
@ -80,20 +80,20 @@ L(unaligned):
lbz r6,0(r4)
addi r3,r3,3
cmpwi r6,0
beq- 2f
beq- L(u2)
0: lbzu r10,1(r4)
L(u0): lbzu r10,1(r4)
stbu r6,1(r3)
cmpwi r10,0
beq- 1f
beq- L(u1)
nop /* Let 601 load start of loop. */
lbzu r6,1(r4)
stbu r10,1(r3)
cmpwi r6,0
bne+ 0b
2: stbu r6,1(r3)
bne+ L(u0)
L(u2): stbu r6,1(r3)
blr
1: stbu r10,1(r3)
L(u1): stbu r10,1(r3)
blr
END(__stpcpy)

28
sysdeps/powerpc/strcmp.S
View File

@ -1,5 +1,5 @@
/* Optimized strcmp implementation for PowerPC.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -48,16 +48,16 @@ EALIGN(strcmp,4,0)
lis r8,0x7f7f
addi r7,r7,-0x101
addi r8,r8,0x7f7f
b 1f
b L(g1)
0: lwzu r5,4(r3)
L(g0): lwzu r5,4(r3)
bne cr1,L(different)
lwzu r6,4(r4)
1: add r0,r7,r5
L(g1): add r0,r7,r5
nor r9,r8,r5
and. r0,r0,r9
cmpw cr1,r5,r6
beq+ 0b
beq+ L(g0)
L(endstring):
/* OK. We've hit the end of the string. We need to be careful that
we don't compare two strings as different because of gunk beyond
@ -93,23 +93,23 @@ L(highbit):
L(unaligned):
lbz r5,0(r3)
lbz r6,0(r4)
b 1f
b L(u1)
0: lbzu r5,1(r3)
bne- 4f
L(u0): lbzu r5,1(r3)
bne- L(u4)
lbzu r6,1(r4)
1: cmpwi cr1,r5,0
beq- cr1,3f
L(u1): cmpwi cr1,r5,0
beq- cr1,L(u3)
cmpw r5,r6
bne- 3f
bne- L(u3)
lbzu r5,1(r3)
lbzu r6,1(r4)
cmpwi cr1,r5,0
cmpw r5,r6
bne+ cr1,0b
3: sub r3,r5,r6
bne+ cr1,L(u0)
L(u3): sub r3,r5,r6
blr
4: lbz r5,-1(r3)
L(u4): lbz r5,-1(r3)
sub r3,r5,r6
blr
END(strcmp)

26
sysdeps/powerpc/strcpy.S
View File

@ -1,5 +1,5 @@
/* Optimized strcpy implementation for PowerPC.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -45,24 +45,24 @@ EALIGN(strcpy,4,0)
lwz r6,0(r4)
addi r7,r7,-0x101
addi r8,r8,0x7f7f
b 2f
b L(g2)
0: lwzu r10,4(r4)
L(g0): lwzu r10,4(r4)
stwu r6,4(r5)
add r0,r7,r10
nor r9,r8,r10
and. r0,r0,r9
bne- 1f
bne- L(g1)
lwzu r6,4(r4)
stwu r10,4(r5)
2: add r0,r7,r6
L(g2): add r0,r7,r6
nor r9,r8,r6
and. r0,r0,r9
beq+ 0b
beq+ L(g0)
mr r10,r6
/* We've hit the end of the string. Do the rest byte-by-byte. */
1: rlwinm. r0,r10,8,24,31
L(g1): rlwinm. r0,r10,8,24,31
stb r0,4(r5)
beqlr-
rlwinm. r0,r10,16,24,31
@ -81,20 +81,20 @@ L(unaligned):
lbz r6,0(r4)
addi r5,r3,-1
cmpwi r6,0
beq- 2f
beq- L(u2)
0: lbzu r10,1(r4)
L(u0): lbzu r10,1(r4)
stbu r6,1(r5)
cmpwi r10,0
beq- 1f
beq- L(u1)
nop /* Let 601 load start of loop. */
lbzu r6,1(r4)
stbu r10,1(r5)
cmpwi r6,0
bne+ 0b
2: stb r6,1(r5)
bne+ L(u0)
L(u2): stb r6,1(r5)
blr
1: stb r10,1(r5)
L(u1): stb r10,1(r5)
blr
END(strcpy)

16
sysdeps/powerpc/sub_n.S
View File

@ -1,5 +1,5 @@
/* Subtract two limb vectors of equal, non-zero length for PowerPC.
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -32,7 +32,7 @@ EALIGN(__mpn_sub_n,3,1)
mtcrf 0x01,r6
srwi. r7,r6,1
mtctr r7
bt 31,2f
bt 31,L(2)
/* Set the carry (clear the borrow). */
subfc r0,r0,r0
@ -40,18 +40,18 @@ EALIGN(__mpn_sub_n,3,1)
addi r3,r3,-4
addi r4,r4,-4
addi r5,r5,-4
b 0f
b L(0)
2: lwz r7,0(r5)
L(2): lwz r7,0(r5)
lwz r6,0(r4)
subfc r6,r7,r6
stw r6,0(r3)
beq 1f
beq L(1)
/* Align start of loop to an odd word boundary to guarantee that the
last two words can be fetched in one access (for 601). This turns
out to be important. */
0:
L(0):
lwz r9,4(r4)
lwz r8,4(r5)
lwzu r6,8(r4)
@ -60,9 +60,9 @@ EALIGN(__mpn_sub_n,3,1)
stw r8,4(r3)
subfe r6,r7,r6
stwu r6,8(r3)
bdnz 0b
bdnz L(0)
/* Return the borrow. */
1: subfe r3,r3,r3
L(1): subfe r3,r3,r3
neg r3,r3
blr
END(__mpn_sub_n)

10
sysdeps/powerpc/submul_1.S
View File

@ -1,5 +1,5 @@
/* Multiply a limb vector by a single limb, for PowerPC.
Copyright (C) 1993, 1994, 1995, 1997, 1999 Free Software Foundation, Inc.
Copyright (C) 1993-1995, 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -33,9 +33,9 @@ ENTRY(__mpn_submul_1)
subf r8,r7,r9
addc r7,r7,r8 # invert cy (r7 is junk)
addi r3,r3,-4 # adjust res_ptr
bdz 1f
bdz L(1)
0: lwzu r0,4(r4)
L(0): lwzu r0,4(r4)
stwu r8,4(r3)
mullw r8,r0,r6
adde r7,r8,r10
@ -44,9 +44,9 @@ ENTRY(__mpn_submul_1)
addze r10,r10
subf r8,r7,r9
addc r7,r7,r8 # invert cy (r7 is junk)
bdnz 0b
bdnz L(0)
1: stw r8,4(r3)
L(1): stw r8,4(r3)
addze r3,r10
blr
END(__mpn_submul_1)

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