* sysdeps/s390/bits/link.h: New file.
* sysdeps/s390/s390-32/dl-trampoline.S: New file.
* sysdeps/s390/s390-64/dl-trampoline.S: New file.
* sysdeps/s390/s390-32/dl-machine.h: Move PLT trampolines to
dl-trampoline.S. Use RESOLVE_MAP instead of RESOLVE to protect
relocation code.
(elf_machine_runtime_setup): Test for dl_profile non-null.
(elf_machine_rela): Remove code using RESOLVE.
(ARCH_LA_PLTENTER, ARCH_LA_PLTEXIT): New.
* sysdeps/s390/s390-64/dl-machine.h: Likewise.
* sysdeps/generic/ldsodefs.h (La_s390_32_regs, La_s390_32_retval,
La_s390_64_regs, La_s390_64_retval): New.
* elf/tst-auditmod1.c: Add s390 entries.
2005-01-28 Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * sysdeps/s390/bits/link.h: New file.
+ * sysdeps/s390/s390-32/dl-trampoline.S: New file.
+ * sysdeps/s390/s390-64/dl-trampoline.S: New file.
+ * sysdeps/s390/s390-32/dl-machine.h: Move PLT trampolines to
+ dl-trampoline.S. Use RESOLVE_MAP instead of RESOLVE to protect
+ relocation code.
+ (elf_machine_runtime_setup): Test for dl_profile non-null.
+ (elf_machine_rela): Remove code using RESOLVE.
+ (ARCH_LA_PLTENTER, ARCH_LA_PLTEXIT): New.
+ * sysdeps/s390/s390-64/dl-machine.h: Likewise.
+ * sysdeps/generic/ldsodefs.h (La_s390_32_regs, La_s390_32_retval,
+ La_s390_64_regs, La_s390_64_retval): New.
+ * elf/tst-auditmod1.c: Add s390 entries.
+
* sysdeps/s390/bits/string.h (strlen, strncpy, strcat, strncat,
strncat, memchr, strcmp): Add missing memory clobber.
# define La_regs La_alpha_regs
# define La_retval La_alpha_retval
# define int_retval lrv_r0
+#elif defined __s390__ && __WORDSIZE == 32
+# define pltenter la_s390_32_gnu_pltenter
+# define pltexit la_s390_32_gnu_pltexit
+# define La_regs La_s390_32_regs
+# define La_retval La_s390_32_retval
+# define int_retval lrv_r2
+#elif defined __s390__ && __WORDSIZE == 64
+# define pltenter la_s390_64_gnu_pltenter
+# define pltexit la_s390_64_gnu_pltexit
+# define La_regs La_s390_64_regs
+# define La_retval La_s390_64_retval
+# define int_retval lrv_r2
#else
# error "architecture specific code needed"
#endif
struct La_m68k_retval;
struct La_alpha_regs;
struct La_alpha_retval;
+struct La_s390_32_regs;
+struct La_s390_32_retval;
+struct La_s390_64_regs;
+struct La_s390_64_retval;
struct audit_ifaces
{
uintptr_t *, struct La_alpha_regs *,
unsigned int *, const char *name,
long int *framesizep);
+ Elf32_Addr (*s390_32_gnu_pltenter) (Elf32_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *, struct La_s390_32_regs *,
+ unsigned int *, const char *name,
+ long int *framesizep);
+ Elf64_Addr (*s390_64_gnu_pltenter) (Elf64_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *, struct La_s390_64_regs *,
+ unsigned int *, const char *name,
+ long int *framesizep);
};
union
{
uintptr_t *,
const struct La_alpha_regs *,
struct La_alpha_retval *, const char *);
+ unsigned int (*s390_32_gnu_pltexit) (Elf32_Sym *, unsigned int,
+ uintptr_t *, uintptr_t *,
+ const struct La_s390_32_regs *,
+ struct La_s390_32_retval *,
+ const char *);
+ unsigned int (*s390_64_gnu_pltexit) (Elf64_Sym *, unsigned int,
+ uintptr_t *, uintptr_t *,
+ const struct La_s390_64_regs *,
+ struct La_s390_64_retval *,
+ const char *);
};
unsigned int (*objclose) (uintptr_t *);
/* Machine-dependent ELF dynamic relocation inline functions. S390 Version.
- Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
Contributed by Carl Pederson & Martin Schwidefsky.
This file is part of the GNU C Library.
#ifndef dl_machine_h
#define dl_machine_h
-
#define ELF_MACHINE_NAME "s390"
#include <sys/param.h>
{
got[2] = (Elf32_Addr) &_dl_runtime_profile;
- if (_dl_name_match_p (GLRO(dl_profile), l))
+ if (GLRO(dl_profile) != NULL
+ && _dl_name_match_p (GLRO(dl_profile), l))
/* This is the object we are looking for. Say that we really
want profiling and the timers are started. */
GL(dl_profile_map) = l;
return lazy;
}
-/* This code is used in dl-runtime.c to call the `fixup' function
- and then redirect to the address it returns. */
-
-/* s390:
- Arguments are in register.
- r2 - r7 holds the original parameters for the function call, fixup
- and trampoline code use r0-r5 and r14-15. For the correct function
- call r2-r5 and r14-15 must be restored.
- Arguments from the PLT are stored at 24(r15) and 28(r15)
- and must be moved to r2 and r3 for the fixup call (see elf32-s390.c
- in the binutils for the PLT code).
- Fixup function address in r2.
-*/
-#ifndef PROF
-#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
- asm ( "\
- .text\n\
- .globl _dl_runtime_resolve\n\
- .type _dl_runtime_resolve, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_resolve:\n\
- # save registers\n\
- stm 2,5,32(15)\n\
- st 14,48(15)\n\
- lr 0,15\n\
- ahi 15,-96\n\
- " CFI_ADJUST_CFA_OFFSET(96)"\n\
- st 0,0(15)\n\
- # load args saved by PLT\n\
- lm 2,3,120(15)\n\
- basr 1,0\n\
-0: ahi 1,1f-0b\n\
- l 14,0(1)\n\
- bas 14,0(14,1) # call fixup\n\
- lr 1,2 # function addr returned in r2\n\
- # restore registers\n\
- ahi 15,96\n\
- " CFI_ADJUST_CFA_OFFSET(-96)" \n\
- l 14,48(15)\n\
- lm 2,5,32(15)\n\
- br 1\n\
-1: .long fixup-1b\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
-\n\
- .globl _dl_runtime_profile\n\
- .type _dl_runtime_profile, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_profile:\n\
- # save registers\n\
- stm 2,5,32(15)\n\
- st 14,48(15)\n\
- lr 0,15\n\
- ahi 15,-96\n\
- " CFI_ADJUST_CFA_OFFSET(96)"\n\
- st 0,0(15)\n\
- # load args saved by PLT\n\
- lm 2,3,120(15)\n\
- # load return address as third parameter\n\
- lr 4,14\n\
- basr 1,0\n\
-0: ahi 1,1f-0b\n\
- l 14,0(1)\n\
- bas 14,0(14,1) # call fixup\n\
- lr 1,2 # function addr returned in r2\n\
- # restore registers\n\
- ahi 15,96\n\
- " CFI_ADJUST_CFA_OFFSET(-96)" \n\
- l 14,48(15)\n\
- lm 2,5,32(15)\n\
- br 1\n\
-1: .long profile_fixup-1b\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_profile, .-_dl_runtime_profile\n\
-");
-#else
-#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
- asm ( "\
- .text\n\
- .globl _dl_runtime_resolve\n\
- .globl _dl_runtime_profile\n\
- .type _dl_runtime_resolve, @function\n\
- .type _dl_runtime_profile, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_resolve:\n\
-_dl_runtime_profile:\n\
- # save registers\n\
- stm 2,5,32(15)\n\
- st 14,48(15)\n\
- lr 0,15\n\
- ahi 15,-96\n\
- " CFI_ADJUST_CFA_OFFSET(96)"\n\
- st 0,0(15)\n\
- # load args saved by PLT\n\
- lm 2,3,120(15)\n\
- # load return address as third parameter\n\
- lr 4,14\n\
- basr 1,0\n\
-0: ahi 1,1f-0b\n\
- l 14,0(1)\n\
- bas 14,0(14,1) # call fixup\n\
- lr 1,2 # function addr returned in r2\n\
- # restore registers\n\
- ahi 15,96\n\
- " CFI_ADJUST_CFA_OFFSET(-96)" \n\
- l 14,48(15)\n\
- lm 2,5,32(15)\n\
- br 1\n\
-1: .long fixup-1b\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
- .size _dl_runtime_profile, .-_dl_runtime_profile\n\
-");
-#endif
-
/* Mask identifying addresses reserved for the user program,
where the dynamic linker should not map anything. */
#define ELF_MACHINE_USER_ADDRESS_MASK 0xf8000000UL
return value;
}
+/* Names of the architecture-specific auditing callback functions. */
+#define ARCH_LA_PLTENTER s390_32_gnu_pltenter
+#define ARCH_LA_PLTEXIT s390_32_gnu_pltexit
+
#endif /* !dl_machine_h */
-#ifdef RESOLVE
+#ifdef RESOLVE_MAP
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
-static inline void
+auto inline void
+__attribute__ ((always_inline))
elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
const Elf32_Sym *sym, const struct r_found_version *version,
void *const reloc_addr_arg)
#ifndef RESOLVE_CONFLICT_FIND_MAP
const Elf32_Sym *const refsym = sym;
#endif
-#if defined USE_TLS && !defined RTLD_BOOTSTRAP
struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
Elf32_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
-#else
- Elf32_Addr value = RESOLVE (&sym, version, r_type);
-
-# ifndef RTLD_BOOTSTRAP
- if (sym)
-# endif
- value += sym->st_value;
-#endif /* use TLS and !RTLD_BOOTSTRAP */
switch (r_type)
{
}
}
-static inline void
+auto inline void
+__attribute__ ((always_inline))
elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc,
void *const reloc_addr_arg)
{
*reloc_addr = l_addr + reloc->r_addend;
}
-static inline void
+auto inline void
+__attribute__ ((always_inline))
elf_machine_lazy_rel (struct link_map *map,
Elf32_Addr l_addr, const Elf32_Rela *reloc)
{
_dl_reloc_bad_type (map, r_type, 1);
}
-#endif /* RESOLVE */
+#endif /* RESOLVE_MAP */
--- /dev/null
+/* PLT trampolines. s390 version.
+ Copyright (C) 2005 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* This code is used in dl-runtime.c to call the `fixup' function
+ and then redirect to the address it returns. */
+
+/* The PLT stubs will call _dl_runtime_resolve/_dl_runtime_profile
+ * with the following linkage:
+ * r2 - r6 : parameter registers
+ * f0, f2 : floating point parameter registers
+ * 24(r15), 28(r15) : PLT arguments PLT1, PLT2
+ * 96(r15) : additional stack parameters
+ * The normal clobber rules for function calls apply:
+ * r0 - r5 : call clobbered
+ * r6 - r13 : call saved
+ * r14 : return address (call clobbered)
+ * r15 : stack pointer (call saved)
+ * f4, f6 : call saved
+ * f0 - f3, f5, f7 - f15 : call clobbered
+ */
+
+#include <sysdep.h>
+
+ .text
+ .globl _dl_runtime_resolve
+ .type _dl_runtime_resolve, @function
+ cfi_startproc
+ .align 16
+_dl_runtime_resolve:
+ stm %r2,%r5,32(%r15) # save registers
+ st %r14,8(%r15)
+ lr %r0,%r15 # create stack frame
+ ahi %r15,-96
+ cfi_adjust_cfa_offset (96)
+ st 0,0(%r15)
+ lm %r2,%r3,120(%r15) # load args saved by PLT
+ basr %r1,0
+0: l %r14,1f-0b(%r1)
+ bas %r14,0(%r14,%r1) # call resolver
+ lr %r1,%r2 # function addr returned in r2
+ ahi %r15,96 # remove stack frame
+ cfi_adjust_cfa_offset (-96)
+ l %r14,8(15) # restore registers
+ lm %r2,%r5,32(%r15)
+ br %r1
+1: .long _dl_fixup - 0b
+ cfi_endproc
+ .size _dl_runtime_resolve, .-_dl_runtime_resolve
+
+
+ .globl _dl_runtime_profile
+ .type _dl_runtime_profile, @function
+ cfi_startproc
+ .align 16
+_dl_runtime_profile:
+ stm %r2,%r6,32(%r15) # save registers
+ std %f0,56(%r15)
+ std %f2,64(%r15)
+ st %r6,8(%r15)
+ st %r12,12(%r15)
+ st %r14,16(%r15)
+ lr %r12,%r15 # create stack frame
+ cfi_def_cfa_register (12)
+ ahi %r15,-96
+ st %r12,0(%r15)
+ lm %r2,%r3,24(%r12) # load arguments saved by PLT
+ lr %r4,%r14 # return address as third parameter
+ basr %r1,0
+0: l %r14,6f-0b(%r1)
+ la %r5,32(%r12) # pointer to struct La_s390_32_regs
+ la %r6,20(%r12) # long int * framesize
+ bas %r14,0(%r14,%r1) # call resolver
+ lr %r1,%r2 # function addr returned in r2
+ icm %r0,15,20(%r12) # load & test framesize
+ jnm 2f
+ lm %r2,%r6,32(%r12)
+ ld %f0,56(%r12)
+ ld %f2,64(%r12)
+ basr %r14,%r1 # call resolved function
+1: lr %r15,%r12 # remove stack frame
+ cfi_def_cfa_register (15)
+ l %r14,16(%r15) # restore registers
+ l %r12,12(%r15)
+ l %r6,8(%r15)
+ br %r14
+ cfi_def_cfa_register (12)
+2: jz 4f # framesize == 0 ?
+ ahi %r0,7 # align framesize to 8
+ lhi %r2,-8
+ nr %r0,%r2
+ slr %r15,%r0 # make room for framesize bytes
+ st %r12,0(%r15)
+ la %r2,96(%r15)
+ la %r3,96(%r12)
+ srl %r0,3
+3: mvc 0(8,%r2),0(%r3) # copy additional parameters
+ la %r2,8(%r2)
+ la %r3,8(%r3)
+ brct %r0,3b
+4: lm %r2,%r6,32(%r12) # load register parameters
+ ld %f0,56(%r12)
+ ld %f2,64(%r12)
+ basr %r14,%r1 # call resolved function
+ stm %r2,%r3,72(%r12)
+ std %f0,80(%r12)
+ lm %r2,%r3,24(%r12) # load arguments saved by PLT
+ basr %r1,0
+5: l %r14,7f-5b(%r1)
+ la %r4,32(%r12) # pointer to struct La_s390_32_regs
+ la %r5,72(%r12) # pointer to struct La_s390_32_retval
+ basr %r14,%r1 # call _dl_call_pltexit
+ j 1b
+6: .long _dl_profile_fixup - 0b
+7: .long _dl_call_pltexit - 5b
+ cfi_endproc
+ .size _dl_runtime_profile, .-_dl_runtime_profile
+
/* Machine-dependent ELF dynamic relocation inline functions.
64 bit S/390 Version.
- Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
{
got[2] = (Elf64_Addr) &_dl_runtime_profile;
- if (_dl_name_match_p (GLRO(dl_profile), l))
+ if (GLRO(dl_profile) != NULL
+ && _dl_name_match_p (GLRO(dl_profile), l))
/* This is the object we are looking for. Say that we really
want profiling and the timers are started. */
GL(dl_profile_map) = l;
return lazy;
}
-/* This code is used in dl-runtime.c to call the `fixup' function
- and then redirect to the address it returns. */
-
-/* s390:
- Arguments are in register.
- r2 - r7 holds the original parameters for the function call, fixup
- and trampoline code use r0-r5 and r14-15. For the correct function
- call r2-r5 and r14-15 must be restored.
- Arguments from the PLT are stored at 48(r15) and 56(r15)
- and must be moved to r2 and r3 for the fixup call (see elf32-s390.c
- in the binutils for the PLT code).
- Fixup function address in r2.
-*/
-#ifndef PROF
-#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
- asm ( "\
- .text\n\
- .globl _dl_runtime_resolve\n\
- .type _dl_runtime_resolve, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_resolve:\n\
- # save registers\n\
- stmg 2,5,64(15)\n\
- stg 14,96(15)\n\
- lgr 0,15\n\
- aghi 15,-160\n\
- " CFI_ADJUST_CFA_OFFSET(160)"\n\
- stg 0,0(15)\n\
- # load args saved by PLT\n\
- lmg 2,3,208(15)\n\
- brasl 14,fixup # call fixup\n\
- lgr 1,2 # function addr returned in r2\n\
- # restore registers\n\
- aghi 15,160\n\
- " CFI_ADJUST_CFA_OFFSET(-160)" \n\
- lg 14,96(15)\n\
- lmg 2,5,64(15)\n\
- br 1\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
-\n\
- .globl _dl_runtime_profile\n\
- .type _dl_runtime_profile, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_profile:\n\
- # save registers\n\
- stmg 2,5,64(15)\n\
- stg 14,96(15)\n\
- lgr 0,15\n\
- aghi 15,-160\n\
- " CFI_ADJUST_CFA_OFFSET(160)"\n\
- stg 0,0(15)\n\
- # load args saved by PLT\n\
- lmg 2,3,208(15)\n\
- # load return address as third parameter\n\
- lgr 4,14\n\
- brasl 14,profile_fixup # call fixup\n\
- lgr 1,2 # function addr returned in r2\n\
- # restore registers\n\
- aghi 15,160\n\
- " CFI_ADJUST_CFA_OFFSET(-160)" \n\
- lg 14,96(15)\n\
- lmg 2,5,64(15)\n\
- br 1\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_profile, .-_dl_runtime_profile\n\
-");
-#else
-#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
- asm ( "\
- .text\n\
- .globl _dl_runtime_resolve\n\
- .globl _dl_runtime_profile\n\
- .type _dl_runtime_resolve, @function\n\
- .type _dl_runtime_profile, @function\n\
- .align 16\n\
- " CFI_STARTPROC "\n\
-_dl_runtime_resolve:\n\
-_dl_runtime_profile:\n\
- # save registers\n\
- stmg 2,5,64(15)\n\
- stg 14,96(15)\n\
- lgr 0,15\n\
- aghi 15,-160\n\
- " CFI_ADJUST_CFA_OFFSET(160)"\n\
- stg 0,0(15)\n\
- # load args saved by PLT\n\
- lmg 2,3,208(15)\n\
- # load return address as third parameter\n\
- lgr 4,14\n\
- brasl 14,profile_fixup # call fixup\n\
- lgr 1,2 # function addr returned in r2\n\
- # restore registers\n\
- aghi 15,160\n\
- " CFI_ADJUST_CFA_OFFSET(-160)" \n\
- lg 14,96(15)\n\
- lmg 2,5,64(15)\n\
- br 1\n\
- " CFI_ENDPROC "\n\
- .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
- .size _dl_runtime_profile, .-_dl_runtime_profile\n\
-");
-#endif
-
/* Initial entry point code for the dynamic linker.
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
return value;
}
+/* Names of the architecture-specific auditing callback functions. */
+#define ARCH_LA_PLTENTER s390_64_gnu_pltenter
+#define ARCH_LA_PLTEXIT s390_64_gnu_pltexit
+
#endif /* !dl_machine_h */
-#ifdef RESOLVE
+#ifdef RESOLVE_MAP
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
MAP is the object containing the reloc. */
-static inline void
+auto inline void
+__attribute__ ((always_inline))
elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
const Elf64_Sym *sym, const struct r_found_version *version,
void *const reloc_addr_arg)
#ifndef RESOLVE_CONFLICT_FIND_MAP
const Elf64_Sym *const refsym = sym;
#endif
-#if defined USE_TLS && !defined RTLD_BOOTSTRAP
struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
Elf64_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
-#else
- Elf64_Addr value = RESOLVE (&sym, version, r_type);
-
-# ifndef RTLD_BOOTSTRAP
- if (sym)
-# endif
- value += sym->st_value;
-#endif /* use TLS and !RTLD_BOOTSTRAP */
switch (r_type)
{
}
}
-static inline void
+auto inline void
+__attribute__ ((always_inline))
elf_machine_rela_relative (Elf64_Addr l_addr, const Elf64_Rela *reloc,
void *const reloc_addr_arg)
{
*reloc_addr = l_addr + reloc->r_addend;
}
-static inline void
+auto inline void
+__attribute__ ((always_inline))
elf_machine_lazy_rel (struct link_map *map,
Elf64_Addr l_addr, const Elf64_Rela *reloc)
{
_dl_reloc_bad_type (map, r_type, 1);
}
-#endif /* RESOLVE */
+#endif /* RESOLVE_MAP */
--- /dev/null
+/* PLT trampolines. s390 version.
+ Copyright (C) 2005 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* The PLT stubs will call _dl_runtime_resolve/_dl_runtime_profile
+ * with the following linkage:
+ * r2 - r6 : parameter registers
+ * f0, f2, f4, f6 : floating point parameter registers
+ * 24(r15), 28(r15) : PLT arguments PLT1, PLT2
+ * 96(r15) : additional stack parameters
+ * The normal clobber rules for function calls apply:
+ * r0 - r5 : call clobbered
+ * r6 - r13 : call saved
+ * r14 : return address (call clobbered)
+ * r15 : stack pointer (call saved)
+ * f1, f3, f5, f7 : call saved
+ * f0 - f3, f5, f7 - f15 : call clobbered
+ */
+
+#include <sysdep.h>
+
+ .text
+ .globl _dl_runtime_resolve
+ .type _dl_runtime_resolve, @function
+ cfi_startproc
+ .align 16
+_dl_runtime_resolve:
+ stmg 2,5,64(15) # save registers
+ stg 14,96(15)
+ lgr 0,15 # create stack frame
+ aghi 15,-160
+ cfi_adjust_cfa_offset (160)
+ stg 0,0(15)
+ lmg 2,3,208(15) # load args saved by PLT
+ brasl 14,_dl_fixup # call fixup
+ lgr 1,2 # function addr returned in r2
+ aghi 15,160 # remove stack frame
+ cfi_adjust_cfa_offset (-160)
+ lg 14,96(15) # restore registers
+ lmg 2,5,64(15)
+ br 1
+ cfi_endproc
+ .size _dl_runtime_resolve, .-_dl_runtime_resolve
+
+
+ .globl _dl_runtime_profile
+ .type _dl_runtime_profile, @function
+ cfi_startproc
+ .align 16
+_dl_runtime_profile:
+ stmg %r2,%r6,64(%r15) # save registers
+ std %f0,104(%r15)
+ std %f2,112(%r15)
+ std %f4,120(%r15)
+ std %f6,128(%r15)
+ stg %r6,16(%r15)
+ stg %r12,24(%r15)
+ stg %r14,32(%r15)
+ lgr %r12,%r15 # create stack frame
+ cfi_def_cfa_register (12)
+ aghi %r15,-160
+ stg %r12,0(%r15)
+ lmg %r2,%r3,48(%r12) # load arguments saved by PLT
+ lgr %r4,%r14 # return address as third parameter
+ la %r5,64(%r12) # pointer to struct La_s390_32_regs
+ la %r6,40(%r12) # long int * framesize
+ brasl %r14,_dl_profile_fixup # call resolver
+ lgr %r1,%r2 # function addr returned in r2
+ lg %r0,40(%r12) # load framesize
+ ltgr %r0,%r0
+ jnm 1f
+ lmg %r2,%r6,64(%r12)
+ ld %f0,104(%r12)
+ ld %f2,112(%r12)
+ ld %f4,120(%r12)
+ ld %f6,128(%r12)
+ basr %r14,%r1 # call resolved function
+0: lr %r15,%r12 # remove stack frame
+ cfi_def_cfa_register (15)
+ lg %r14,32(%r15) # restore registers
+ lg %r12,24(%r15)
+ lg %r6,16(%r15)
+ br %r14
+ cfi_def_cfa_register (12)
+1: jz 4f # framesize == 0 ?
+ aghi %r0,7 # align framesize to 8
+ nill %r0,0xfff8
+ slgr %r15,%r0 # make room for framesize bytes
+ stg %r12,0(%r15)
+ la %r2,160(%r15)
+ la %r3,160(%r12)
+ srlg %r0,%r0,3
+3: mvc 0(8,%r2),0(%r3) # copy additional parameters
+ la %r2,8(%r2)
+ la %r3,8(%r3)
+ brctg %r0,3b
+4: lmg %r2,%r6,64(%r12) # load register parameters
+ ld %f0,104(%r12)
+ ld %f2,112(%r12)
+ ld %f4,120(%r12)
+ ld %f6,128(%r12)
+ basr %r14,%r1 # call resolved function
+ stg %r2,136(%r12)
+ std %f0,144(%r12)
+ lmg %r2,%r3,48(%r12) # load arguments saved by PLT
+ la %r4,32(%r12) # pointer to struct La_s390_32_regs
+ la %r5,72(%r12) # pointer to struct La_s390_32_retval
+ brasl %r14,_dl_call_pltexit
+ j 0b
+ cfi_endproc
+ .size _dl_runtime_profile, .-_dl_runtime_profile
projects / external / glibc.git / commitdiff