summaryrefslogtreecommitdiff
path: root/sysdeps/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/powerpc')
-rw-r--r--sysdeps/powerpc/Makefile6
-rw-r--r--sysdeps/powerpc/bits/mathinline.h44
-rw-r--r--sysdeps/powerpc/bzero.S27
-rw-r--r--sysdeps/powerpc/dl-machine.h71
-rw-r--r--sysdeps/powerpc/machine-gmon.h1
-rw-r--r--sysdeps/powerpc/stpcpy.S100
-rw-r--r--sysdeps/powerpc/strcat.c30
-rw-r--r--sysdeps/powerpc/strcpy.S100
8 files changed, 338 insertions, 41 deletions
diff --git a/sysdeps/powerpc/Makefile b/sysdeps/powerpc/Makefile
index 3e8f22b573..1813c78dd8 100644
--- a/sysdeps/powerpc/Makefile
+++ b/sysdeps/powerpc/Makefile
@@ -21,7 +21,7 @@ endif
# so that's at least 8192 entries. Since libc only uses about 1200 entries,
# we want to use -fpic, because this generates fewer relocs.
ifeq (yes,$(build-shared))
-CFLAGS-.os = -fpic -fno-common
+pic-ccflag = -fpic
endif
# The initfini generation code doesn't work in the presence of -fPIC, so
@@ -29,3 +29,7 @@ endif
ifeq ($(subdir),csu)
CFLAGS-initfini.s = -g0 -fpic
endif
+
+ifeq ($(subdir),string)
+CFLAGS-memcmp.c += -Wno-uninitialized
+endif
diff --git a/sysdeps/powerpc/bits/mathinline.h b/sysdeps/powerpc/bits/mathinline.h
index d7f2a3ac0d..d7cabaf28b 100644
--- a/sysdeps/powerpc/bits/mathinline.h
+++ b/sysdeps/powerpc/bits/mathinline.h
@@ -32,34 +32,22 @@ __sgn1 (double __x)
{
return __x >= 0.0 ? 1.0 : -1.0;
}
+#endif /* __NO_MATH_INLINES && __OPTIMZE__ */
-/* We'd want to use this if it was implemented in hardware, but
- how can we tell? */
-#if 0
-__MATH_INLINE double sqrt (double __x);
-__MATH_INLINE double
-sqrt (double __x)
-{
- register double __value;
- __asm
- ("fsqrt %0,%1"
- : "=f" (__value) : "f" (__x));
-
- return __value;
-}
-#endif
-
-__MATH_INLINE double fabs (double __x);
-__MATH_INLINE double
-fabs (double __x)
-{
- register double __value;
- __asm
- ("fabs %0,%1"
- : "=f" (__value) : "f" (__x));
-
- return __value;
-}
+#if __USE_ISOC9X
+# define __unordered_cmp(x, y) \
+ (__extension__ \
+ ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
+ unsigned __r; \
+ __asm__("fcmpu 7,%1,%2 ; mfcr %0" : "=r" (__r) : "f" (__x), "f"(__y)); \
+ __r; }))
+
+# define isgreater(x, y) (__unordered_cmp (x, y) >> 2 & 1)
+# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & 6) != 0)
+# define isless(x, y) (__unordered_cmp (x, y) >> 3 & 1)
+# define islessequal(x, y) ((__unordered_cmp (x, y) & 0xA) != 0)
+# define islessgreater(x, y) ((__unordered_cmp (x, y) & 0xC) != 0)
+# define isunordered(x, y) (__unordered_cmp (x, y) & 1)
+#endif /* __USE_ISOC9X */
-#endif /* __NO_MATH_INLINES && __OPTIMZE__ */
#endif /* __GNUC__ */
diff --git a/sysdeps/powerpc/bzero.S b/sysdeps/powerpc/bzero.S
new file mode 100644
index 0000000000..783a91fdcb
--- /dev/null
+++ b/sysdeps/powerpc/bzero.S
@@ -0,0 +1,27 @@
+/* Optimized bzero `implementation' for PowerPC.
+ Copyright (C) 1997 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
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+
+ENTRY(__bzero)
+ mr %r5,%r4
+ li %r4,0
+ b memset@local
+END(__bzero)
+weak_alias (__bzero, bzero)
diff --git a/sysdeps/powerpc/dl-machine.h b/sysdeps/powerpc/dl-machine.h
index 771b711a14..70a3f20b31 100644
--- a/sysdeps/powerpc/dl-machine.h
+++ b/sysdeps/powerpc/dl-machine.h
@@ -199,6 +199,53 @@ _dl_runtime_resolve:
bctr
0:
.size _dl_runtime_resolve,0b-_dl_runtime_resolve
+
+ .align 2
+ .globl _dl_prof_resolve
+ .type _dl_prof_resolve,@function
+_dl_prof_resolve:
+ # We need to save the registers used to pass parameters, and register 0,
+ # which is used by _mcount; the registers are saved in a stack frame.
+ stwu 1,-48(1)
+ stw 0,12(1)
+ stw 3,16(1)
+ stw 4,20(1)
+ # The code that calls this has put parameters for `fixup' in r12 and r11.
+ mr 3,12
+ stw 5,24(1)
+ mr 4,11
+ stw 6,28(1)
+ mflr 5
+ # We also need to save some of the condition register fields.
+ stw 7,32(1)
+ stw 5,52(1)
+ stw 8,36(1)
+ mfcr 0
+ stw 9,40(1)
+ stw 10,44(1)
+ stw 0,8(1)
+ bl profile_fixup@local
+ # 'fixup' returns the address we want to branch to.
+ mtctr 3
+ # Put the registers back...
+ lwz 0,52(1)
+ lwz 10,44(1)
+ lwz 9,40(1)
+ mtlr 0
+ lwz 8,36(1)
+ lwz 0,8(1)
+ lwz 7,32(1)
+ lwz 6,28(1)
+ mtcrf 0xFF,0
+ lwz 5,24(1)
+ lwz 4,20(1)
+ lwz 3,16(1)
+ lwz 0,12(1)
+ # ...unwind the stack frame, and jump to the PLT entry we updated.
+ addi 1,1,48
+ bctr
+0:
+ .size _dl_prof_resolve,0b-_dl_prof_resolve
# Undo '.section text'.
.previous
");
@@ -409,8 +456,14 @@ elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
Elf32_Word num_plt_entries = (map->l_info[DT_PLTRELSZ]->d_un.d_val
/ sizeof (Elf32_Rela));
Elf32_Word rel_offset_words = PLT_DATA_START_WORDS (num_plt_entries);
- extern void _dl_runtime_resolve (void);
Elf32_Word size_modified;
+ extern void _dl_runtime_resolve (void);
+ extern void _dl_prof_resolve (void);
+ Elf32_Word dlrr;
+
+ dlrr = (Elf32_Word)(char *)(profile
+ ? _dl_prof_resolve
+ : _dl_runtime_resolve);
if (lazy)
for (i = 0; i < num_plt_entries; i++)
@@ -433,8 +486,7 @@ elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
/* Multiply index of entry by 3 (in r11). */
plt[0] = OPCODE_SLWI (12, 11, 1);
plt[1] = OPCODE_ADD (11, 12, 11);
- if ((Elf32_Word) (char *) _dl_runtime_resolve <= 0x01fffffc ||
- (Elf32_Word) (char *) _dl_runtime_resolve >= 0xfe000000)
+ if (dlrr <= 0x01fffffc || dlrr >= 0xfe000000)
{
/* Load address of link map in r12. */
plt[2] = OPCODE_LI (12, (Elf32_Word) (char *) map);
@@ -442,15 +494,13 @@ elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
+ 0x8000) >> 16));
/* Call _dl_runtime_resolve. */
- plt[4] = OPCODE_BA ((Elf32_Word) (char *) _dl_runtime_resolve);
+ plt[4] = OPCODE_BA (dlrr);
}
else
{
/* Get address of _dl_runtime_resolve in CTR. */
- plt[2] = OPCODE_LI (12, (Elf32_Word) (char *) _dl_runtime_resolve);
- plt[3] = OPCODE_ADDIS (12, 12, ((((Elf32_Word) (char *)
- _dl_runtime_resolve)
- + 0x8000) >> 16));
+ plt[2] = OPCODE_LI (12, dlrr);
+ plt[3] = OPCODE_ADDIS (12, 12, (dlrr + 0x8000) >> 16);
plt[4] = OPCODE_MTCTR (12);
/* Load address of link map in r12. */
@@ -501,7 +551,6 @@ elf_machine_runtime_setup (struct link_map *map, int lazy, int profile)
static inline void
elf_machine_lazy_rel (struct link_map *map, const Elf32_Rela *reloc)
{
- assert (ELF32_R_TYPE (reloc->r_info) == R_PPC_JMP_SLOT);
/* elf_machine_runtime_setup handles this. */
}
@@ -513,7 +562,7 @@ elf_machine_lazy_rel (struct link_map *map, const Elf32_Rela *reloc)
LOADADDR is the load address of the object; INFO is an array indexed
by DT_* of the .dynamic section info. */
-static inline void
+static void
elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
const Elf32_Sym *sym, const struct r_found_version *version,
Elf32_Addr *const reloc_addr)
@@ -709,4 +758,4 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
#define ELF_MACHINE_NO_REL 1
-#endif
+#endif /* RESOLVE */
diff --git a/sysdeps/powerpc/machine-gmon.h b/sysdeps/powerpc/machine-gmon.h
index ba53807308..b890dd5c53 100644
--- a/sysdeps/powerpc/machine-gmon.h
+++ b/sysdeps/powerpc/machine-gmon.h
@@ -1,7 +1,6 @@
/* PowerPC-specific implementation of profiling support.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
diff --git a/sysdeps/powerpc/stpcpy.S b/sysdeps/powerpc/stpcpy.S
new file mode 100644
index 0000000000..58ad5b12b6
--- /dev/null
+++ b/sysdeps/powerpc/stpcpy.S
@@ -0,0 +1,100 @@
+/* Optimized stpcpy implementation for PowerPC.
+ Copyright (C) 1997 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
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+
+/* See strlen.s for comments on how the end-of-string testing works. */
+
+EALIGN(__stpcpy,4,0)
+/* char * [r3] stpcpy (char *dest [r3], const char *src [r4]) */
+
+/* General register assignments:
+ r0: temporary
+ r3: pointer to previous word in dest
+ r4: pointer to previous word in src
+ r6: current word from src
+ r7: 0xfefefeff
+ r8: 0x7f7f7f7f
+ r9: ~(word in src | 0x7f7f7f7f)
+ r10: alternate word from src. */
+
+ or %r0,%r4,%r3
+ clrlwi. %r0,%r0,30
+ addi %r3,%r3,-4
+ bne L(unaligned)
+
+ lis %r7,0xfeff
+ lis %r8,0x7f7f
+ lwz %r6,0(%r4)
+ addi %r7,%r7,-0x101
+ addi %r8,%r8,0x7f7f
+ b 2f
+
+0: lwzu %r10,4(%r4)
+ stwu %r6,4(%r3)
+ add %r0,%r7,%r10
+ nor %r9,%r8,%r10
+ and. %r0,%r0,%r9
+ bne- 1f
+ lwzu %r6,4(%r4)
+ stwu %r10,4(%r3)
+2: add %r0,%r7,%r6
+ nor %r9,%r8,%r6
+ and. %r0,%r0,%r9
+ beq+ 0b
+
+ mr %r10,%r6
+/* We've hit the end of the string. Do the rest byte-by-byte. */
+1: rlwinm. %r0,%r10,8,24,31
+ stbu %r0,4(%r3)
+ beqlr-
+ rlwinm. %r0,%r10,16,24,31
+ stbu %r0,1(%r3)
+ beqlr-
+ rlwinm. %r0,%r10,24,24,31
+ stbu %r0,1(%r3)
+ beqlr-
+ stbu %r10,1(%r3)
+ blr
+
+/* Oh well. In this case, we just do a byte-by-byte copy. */
+ .align 4
+ nop
+L(unaligned):
+ lbz %r6,0(%r4)
+ addi %r3,%r3,3
+ cmpwi %r6,0
+ beq- 2f
+
+0: lbzu %r10,1(%r4)
+ stbu %r6,1(%r3)
+ cmpwi %r10,0
+ beq- 1f
+ 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)
+ blr
+1: stbu %r10,1(%r3)
+ blr
+END(__stpcpy)
+
+weak_alias (__stpcpy, stpcpy)
diff --git a/sysdeps/powerpc/strcat.c b/sysdeps/powerpc/strcat.c
new file mode 100644
index 0000000000..9d9ab6549a
--- /dev/null
+++ b/sysdeps/powerpc/strcat.c
@@ -0,0 +1,30 @@
+/* strcat version that uses fast strcpy/strlen.
+ Copyright (C) 1997 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
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <string.h>
+
+#undef strcat
+
+/* Append SRC on the end of DEST. */
+char *
+strcat (char *dest, const char *src)
+{
+ strcpy (dest + strlen (dest), src);
+ return dest;
+}
diff --git a/sysdeps/powerpc/strcpy.S b/sysdeps/powerpc/strcpy.S
new file mode 100644
index 0000000000..3c0cce7844
--- /dev/null
+++ b/sysdeps/powerpc/strcpy.S
@@ -0,0 +1,100 @@
+/* Optimized strcpy implementation for PowerPC.
+ Copyright (C) 1997 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
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+
+/* See strlen.s for comments on how the end-of-string testing works. */
+
+EALIGN(strcpy,4,0)
+/* char * [r3] strcpy (char *dest [r3], const char *src [r4]) */
+
+/* General register assignments:
+ r0: temporary
+ r3: saved `dest'
+ r4: pointer to previous word in src
+ r5: pointer to previous word in dest
+ r6: current word from src
+ r7: 0xfefefeff
+ r8: 0x7f7f7f7f
+ r9: ~(word in src | 0x7f7f7f7f)
+ r10: alternate word from src. */
+
+ or %r0,%r4,%r3
+ clrlwi. %r0,%r0,30
+ addi %r5,%r3,-4
+ bne L(unaligned)
+
+ lis %r7,0xfeff
+ lis %r8,0x7f7f
+ lwz %r6,0(%r4)
+ addi %r7,%r7,-0x101
+ addi %r8,%r8,0x7f7f
+ b 2f
+
+0: lwzu %r10,4(%r4)
+ stwu %r6,4(%r5)
+ add %r0,%r7,%r10
+ nor %r9,%r8,%r10
+ and. %r0,%r0,%r9
+ bne- 1f
+ lwzu %r6,4(%r4)
+ stwu %r10,4(%r5)
+2: add %r0,%r7,%r6
+ nor %r9,%r8,%r6
+ and. %r0,%r0,%r9
+ beq+ 0b
+
+ mr %r10,%r6
+/* We've hit the end of the string. Do the rest byte-by-byte. */
+1: rlwinm. %r0,%r10,8,24,31
+ stb %r0,4(%r5)
+ beqlr-
+ rlwinm. %r0,%r10,16,24,31
+ stb %r0,5(%r5)
+ beqlr-
+ rlwinm. %r0,%r10,24,24,31
+ stb %r0,6(%r5)
+ beqlr-
+ stb %r10,7(%r5)
+ blr
+
+/* Oh well. In this case, we just do a byte-by-byte copy. */
+ .align 4
+ nop
+L(unaligned):
+ lbz %r6,0(%r4)
+ addi %r5,%r3,-1
+ cmpwi %r6,0
+ beq- 2f
+
+0: lbzu %r10,1(%r4)
+ stbu %r6,1(%r5)
+ cmpwi %r10,0
+ beq- 1f
+ 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)
+ blr
+1: stb %r10,1(%r5)
+ blr
+
+END(strcpy)
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-09 13:40:59 +0000