+++ /dev/null
-/* Machine-dependent ELF dynamic relocation inline functions. SH-3 version.
- Copyright (C) 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
- 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. */
-
-#ifndef dl_machine_h
-#define dl_machine_h
-
-/* Only dummy. This doesn't work. */
-
-#define ELF_MACHINE_NAME "SH"
-
-#include <sys/param.h>
-
-#include <assert.h>
-
-/* Return nonzero iff E_MACHINE is compatible with the running host. */
-static inline int __attribute__ ((unused))
-elf_machine_matches_host (Elf32_Half e_machine)
-{
- switch (e_machine)
- {
- case EM_SH:
- return 1;
- default:
- return 0;
- }
-}
-
-
-/* Return the link-time address of _DYNAMIC. Conveniently, this is the
- first element of the GOT. This must be inlined in a function which
- uses global data. */
-static inline Elf32_Addr __attribute__ ((unused))
-elf_machine_dynamic (void)
-{
- register Elf32_Addr *got;
- asm ("mov r12,%0" :"=r" (got));
- return *got;
-}
-
-
-/* Return the run-time load address of the shared object. */
-static inline Elf32_Addr __attribute__ ((unused))
-elf_machine_load_address (void)
-{
- Elf32_Addr addr;
- asm ("mov.l .L1,r0
- mov.l .L3,r2
- add r12,r2
- mov.l @(r0,r12),r0
- bra .L2
- sub r0,r2
- .align 2
- .L1: .long _dl_start@GOT
- .L3: .long _dl_start@GOTOFF
- .L2: mov r2,%0"
- : "=r" (addr) : : "r0", "r1", "r2");
- return addr;
-}
-
-
-/* Set up the loaded object described by L so its unrelocated PLT
- entries will jump to the on-demand fixup code in dl-runtime.c. */
-
-static inline int __attribute__ ((unused))
-elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
-{
- Elf32_Addr *got;
- extern void _dl_runtime_resolve (Elf32_Word);
- extern void _dl_runtime_profile (Elf32_Word);
-
- if (l->l_info[DT_JMPREL] && lazy)
- {
- /* The GOT entries for functions in the PLT have not yet been filled
- in. Their initial contents will arrange when called to load an
- offset into the .rela.plt section and _GLOBAL_OFFSET_TABLE_[1],
- and then jump to _GLOBAL_OFFSET_TABLE[2]. */
- got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
- got[1] = (Elf32_Addr) l; /* Identify this shared object. */
-
- /* The got[2] entry contains the address of a function which gets
- called to get the address of a so far unresolved function and
- jump to it. The profiling extension of the dynamic linker allows
- to intercept the calls to collect information. In this case we
- don't store the address in the GOT so that all future calls also
- end in this function. */
- if (profile)
- {
- got[2] = (Elf32_Addr) &_dl_runtime_profile;
- /* Say that we really want profiling and the timers are started. */
- _dl_profile_map = l;
- }
- else
- /* This function will get called to fix up the GOT entry indicated by
- the offset on the stack, and then jump to the resolved address. */
- got[2] = (Elf32_Addr) &_dl_runtime_resolve;
- }
- return lazy;
-}
-
-/* This code is used in dl-runtime.c to call the `fixup' function
- and then redirect to the address it returns. */
-
-#define ELF_MACHINE_RUNTIME_FIXUP_ARGS int plt_type
-
-#ifdef SHARED
-#define FUN_ADDR "\
- mov.l 1f,r2
- mova 1f,r0
- bra 2f
- add r0,r2 ! Get GOT address in r2
-0: .align 2
-1: .long _GLOBAL_OFFSET_TABLE_
-2: mov.l 3f,r0
- add r2,r0"
-#define GOTJMP(x) #x "@GOTOFF"
-#else
-#define FUN_ADDR "\
- mov.l 3f,r0"
-#define GOTJMP(x) #x
-#endif
-
-#if defined (KERNEL_MATH_EMULATION)
-#define FGR_SAVE "\
- sts.l fpscr, @-r15
- mov #8,r3
- swap.w r3, r3
- lds r3, fpscr
- fmov.s fr11, @-r15
- fmov.s fr10, @-r15
- fmov.s fr9, @-r15
- fmov.s fr8, @-r15
- fmov.s fr7, @-r15
- fmov.s fr6, @-r15
- fmov.s fr5, @-r15
- fmov.s fr4, @-r15"
-#define FGR_LOAD "\
- fmov.s @r15+, fr4
- fmov.s @r15+, fr5
- fmov.s @r15+, fr6
- fmov.s @r15+, fr7
- fmov.s @r15+, fr8
- fmov.s @r15+, fr9
- fmov.s @r15+, fr10
- fmov.s @r15+, fr11
- lds.l @r15+, fpscr"
-#else
-#define FGR_SAVE ""
-#define FGR_LOAD ""
-#endif
-
-#ifndef PROF
-# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
- .text
- .globl _dl_runtime_resolve
- .type _dl_runtime_resolve, @function
- .align 5
-_dl_runtime_resolve:
- mov.l r3,@-r15
- mov.l r4,@-r15
- mov.l r5,@-r15
- mov.l r6,@-r15
- mov.l r7,@-r15
- mov.l r12,@-r15
- movt r3 ! Save T flag.
- mov.l r3,@-r15
- " FGR_SAVE "
- sts.l pr,@-r15
- mov r0,r4 ! PLT type
- mov r2,r5 ! link map address
- " FUN_ADDR "
- jsr @r0 ! Call resolver.
- mov r1,r6 ! reloc offset
- lds.l @r15+,pr ! Get register content back.
- " FGR_LOAD "
- mov.l @r15+,r3
- shal r3 ! Lode T flag.
- mov.l @r15+,r12
- mov.l @r15+,r7
- mov.l @r15+,r6
- mov.l @r15+,r5
- mov.l @r15+,r4
- jmp @r0 ! Jump to function address.
- mov.l @r15+,r3
- .align 2
-3:
- .long " GOTJMP (fixup) "
- .size _dl_runtime_resolve, .-_dl_runtime_resolve
-
- .globl _dl_runtime_profile
- .type _dl_runtime_profile, @function
- .align 5
-_dl_runtime_profile:
- mov.l r3,@-r15
- mov.l r4,@-r15
- mov.l r5,@-r15
- mov.l r6,@-r15
- mov.l r7,@-r15
- mov.l r12,@-r15
- movt r3 ! Save T flag.
- mov.l r3,@-r15
- " FGR_SAVE "
- sts.l pr,@-r15
- mov r0,r4 ! PLT type
- mov r2,r5 ! link map address
- sts pr,r7 ! return address
- " FUN_ADDR "
- jsr @r0 ! Call resolver.
- mov r1,r6 ! reloc offset
- lds.l @r15+,pr ! Get register content back.
- " FGR_LOAD "
- mov.l @r15+,r3
- shal r3 ! Lode T flag.
- mov.l @r15+,r12
- mov.l @r15+,r7
- mov.l @r15+,r6
- mov.l @r15+,r5
- mov.l @r15+,r4
- jmp @r0 ! Jump to function address.
- mov.l @r15+,r3
- .align 2
-3:
- .long " GOTJMP (profile_fixup) "
- .size _dl_runtime_profile, .-_dl_runtime_profile
- .previous
-");
-#else
-# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
- .text
- .globl _dl_runtime_resolve
- .globl _dl_runtime_profile
- .type _dl_runtime_resolve, @function
- .type _dl_runtime_profile, @function
- .align 5
-_dl_runtime_resolve:
-_dl_runtime_profile:
- mov.l r3,@-r15
- mov.l r4,@-r15
- mov.l r5,@-r15
- mov.l r6,@-r15
- mov.l r7,@-r15
- mov.l r12,@-r15
- movt r3 ! Save T flag.
- mov.l r3,@-r15
- " FGR_SAVE "
- sts.l pr,@-r15
- mov r0,r4 ! PLT type
- mov r2,r5 ! link map address
- sts pr,r7 ! return address
- " FUN_ADDR "
- jsr @r0 ! Call resolver.
- mov r1,r6 ! reloc offset
- lds.l @r15+,pr ! Get register content back.
- " FGR_LOAD "
- mov.l @r15+,r3
- shal r3 ! Lode T flag.
- mov.l @r15+,r12
- mov.l @r15+,r7
- mov.l @r15+,r6
- mov.l @r15+,r5
- mov.l @r15+,r4
- jmp @r0 ! Jump to function address.
- mov.l @r15+,r3
- .align 2
-3:
- .long " GOTJMP (fixup) "
- .size _dl_runtime_resolve, .-_dl_runtime_resolve
- .size _dl_runtime_profile, .-_dl_runtime_profile
- .previous
-");
-#endif
-
-/* Mask identifying addresses reserved for the user program,
- where the dynamic linker should not map anything. */
-#define ELF_MACHINE_USER_ADDRESS_MASK 0x80000000UL
-
-/* 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. */
-
-#define RTLD_START asm ("\
-.text\n\
-.globl _start\n\
-.globl _dl_start_user\n\
-_start:\n\
- mov r15,r4\n\
- mov.l .L_dl_start,r1\n\
- mova .L_dl_start,r0\n\
- add r1,r0\n\
- jsr @r0\n\
- nop\n\
-_dl_start_user:\n\
- ! Save the user entry point address in r8.\n\
- mov r0,r8\n\
- ! Point r12 at the GOT.\n\
- mov.l 1f,r12\n\
- mova 1f,r0\n\
- bra 2f\n\
- add r0,r12\n\
- .align 2\n\
-1: .long _GLOBAL_OFFSET_TABLE_\n\
-2: ! Store the highest stack address\n\
- mov.l .L_stack_end,r0\n\
- mov.l @(r0,r12),r0\n\
- mov.l r15,@r0\n\
- ! See if we were run as a command with the executable file\n\
- ! name as an extra leading argument.\n\
- mov.l .L_dl_skip_args,r0\n\
- mov.l @(r0,r12),r0\n\
- mov.l @r0,r0\n\
- ! Get the original argument count.\n\
- mov.l @r15,r5\n\
- ! Subtract _dl_skip_args from it.\n\
- sub r0,r5\n\
- ! Adjust the stack pointer to skip _dl_skip_args words.\n\
- shll2 r0\n\
- add r0,r15\n\
- ! Store back the modified argument count.\n\
- mov.l r5,@r15\n\
- ! Compute argv address and envp.\n\
- mov r15,r6\n\
- add #4,r6\n\
- mov r5,r7\n\
- shll2 r7\n\
- add r15,r7\n\
- mov.l .L_dl_loaded,r0\n\
- mov.l @(r0,r12),r0\n\
- mov.l @r0,r4\n\
- ! Call _dl_init.\n\
- mov.l .L_dl_init,r1\n\
- mova .L_dl_init,r0\n\
- add r1,r0\n\
- jsr @r0\n\
- nop\n\
-1: ! Clear the startup flag.\n\
- mov.l .L_dl_starting_up,r0\n\
- mov.l @(r0,r12),r0\n\
- mov #0,r2\n\
- mov.l r2,@r0\n\
- ! Pass our finalizer function to the user in r4, as per ELF ABI.\n\
- mov.l .L_dl_fini,r0\n\
- mov.l @(r0,r12),r4\n\
- ! Jump to the user's entry point.\n\
- jmp @r8\n\
- nop\n\
- .align 2\n\
-.L_dl_start:\n\
- .long _dl_start@PLT\n\
-.L_stack_end:\n\
- .long __libc_stack_end@GOT\n\
-.L_dl_skip_args:\n\
- .long _dl_skip_args@GOT\n\
-.L_dl_init:\n\
- .long _dl_init@PLT\n\
-.L_dl_loaded:\n\
- .long _dl_loaded@GOT\n\
-.L_dl_starting_up:\n\
- .long _dl_starting_up@GOT\n\
-.L_dl_fini:\n\
- .long _dl_fini@GOT\n\
-.previous\n\
-");
-
-/* Nonzero iff TYPE should not be allowed to resolve to one of
- the main executable's symbols, as for a COPY reloc. */
-#define elf_machine_lookup_noexec_p(type) ((type) == R_SH_COPY)
-
-/* Nonzero iff TYPE describes relocation of a PLT entry, so
- PLT entries should not be allowed to define the value. */
-#define elf_machine_lookup_noplt_p(type) ((type) == R_SH_JMP_SLOT)
-
-/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
-#define ELF_MACHINE_JMP_SLOT R_SH_JMP_SLOT
-
-/* We define an initialization functions. This is called very early in
- _dl_sysdep_start. */
-#define DL_PLATFORM_INIT dl_platform_init ()
-
-extern const char *_dl_platform;
-
-static inline void __attribute__ ((unused))
-dl_platform_init (void)
-{
- if (_dl_platform != NULL && *_dl_platform == '\0')
- /* Avoid an empty string which would disturb us. */
- _dl_platform = NULL;
-}
-
-static inline Elf32_Addr
-elf_machine_fixup_plt (struct link_map *map, lookup_t t,
- const Elf32_Rela *reloc,
- Elf32_Addr *reloc_addr, Elf32_Addr value)
-{
- return *reloc_addr = value;
-}
-
-/* Return the final value of a plt relocation. */
-static inline Elf32_Addr
-elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
- Elf32_Addr value)
-{
- return value + reloc->r_addend;
-}
-
-#endif /* !dl_machine_h */
-
-#ifdef RESOLVE
-
-/* SH never uses Elf32_Rel relocations. */
-#define ELF_MACHINE_NO_REL 1
-
-extern char **_dl_argv;
-
-/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
- MAP is the object containing the reloc. */
-
-static inline 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)
-{
- if (ELF32_R_TYPE (reloc->r_info) == R_SH_RELATIVE)
- {
-#ifndef RTLD_BOOTSTRAP
- if (map != &_dl_rtld_map) /* Already done in rtld itself. */
-#endif
- *reloc_addr = map->l_addr + reloc->r_addend;
- }
- else if (ELF32_R_TYPE (reloc->r_info) != R_SH_NONE)
- {
- const Elf32_Sym *const refsym = sym;
- Elf32_Addr value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info));
- if (sym)
- value += sym->st_value;
- value += reloc->r_addend;
-
- switch (ELF32_R_TYPE (reloc->r_info))
- {
- case R_SH_COPY:
- if (sym == NULL)
- /* This can happen in trace mode if an object could not be
- found. */
- break;
- if (sym->st_size > refsym->st_size
- || (sym->st_size < refsym->st_size && _dl_verbose))
- {
- const char *strtab;
-
- strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
- _dl_sysdep_error (_dl_argv[0] ?: "<program name unknown>",
- ": Symbol `", strtab + refsym->st_name,
- "' has different size in shared object, "
- "consider re-linking\n", NULL);
- }
- memcpy (reloc_addr, (void *) value, MIN (sym->st_size,
- refsym->st_size));
- break;
- case R_SH_GLOB_DAT:
- case R_SH_JMP_SLOT:
- *reloc_addr = value;
- break;
- case R_SH_DIR32:
- {
-#ifndef RTLD_BOOTSTRAP
- /* This is defined in rtld.c, but nowhere in the static
- libc.a; make the reference weak so static programs can
- still link. This declaration cannot be done when
- compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP) because
- rtld.c contains the common defn for _dl_rtld_map, which
- is incompatible with a weak decl in the same file. */
- weak_extern (_dl_rtld_map);
- if (map == &_dl_rtld_map)
- /* Undo the relocation done here during bootstrapping.
- Now we will relocate it anew, possibly using a
- binding found in the user program or a loaded library
- rather than the dynamic linker's built-in definitions
- used while loading those libraries. */
- value -= map->l_addr + refsym->st_value + reloc->r_addend;
-#endif
- *reloc_addr = value;
- break;
- }
- case R_SH_REL32:
- *reloc_addr = (value - (Elf32_Addr) reloc_addr);
- break;
- default:
- _dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 0);
- break;
- }
- }
-}
-
-static inline void
-elf_machine_lazy_rel (struct link_map *map,
- Elf32_Addr l_addr, const Elf32_Rela *reloc)
-{
- Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
- /* Check for unexpected PLT reloc type. */
- if (ELF32_R_TYPE (reloc->r_info) == R_SH_JMP_SLOT)
- *reloc_addr += l_addr;
- else
- _dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
-}
-
-#endif /* RESOLVE */
+++ /dev/null
-/* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity).
- Used by <stdlib.h> and <math.h> functions for overflow.
- SH version.
- Copyright (C) 1992, 95, 96, 97, 98, 99, 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
- 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. */
-
-#ifndef _MATH_H
-# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
-#endif
-
-#include <features.h>
-
-/* IEEE positive infinity (-HUGE_VAL is negative infinity). */
-
-#ifdef __GNUC__
-
-# if __GNUC_PREREQ(2,96)
-
-# define HUGE_VAL (__extension__ 0x1.0p2047)
-
-# else
-
-# define HUGE_VAL \
- (__extension__ \
- ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \
- { __l: 0x000000007ff00000ULL }).__d)
-
-# endif
-
-#else /* not GCC */
-
-# include <endian.h>
-
-typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
-
-# if __BYTE_ORDER == __BIG_ENDIAN
-# define __HUGE_VAL_bytes { 0, 0, 0, 0, 0x7f, 0xf0, 0, 0 }
-# endif
-# if __BYTE_ORDER == __LITTLE_ENDIAN
-# define __HUGE_VAL_bytes { 0, 0, 0xf0, 0x7f, 0, 0, 0, 0 }
-# endif
-
-static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
-# define HUGE_VAL (__huge_val.__d)
-
-#endif /* GCC. */
-
-
-/* ISO C99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */
-
-#ifdef __USE_ISOC99
-
-# ifdef __GNUC__
-
-# if __GNUC_PREREQ(2,96)
-
-# define HUGE_VALF (__extension__ 0x1.0p255f)
-
-# else
-
-# define HUGE_VALF \
- (__extension__ \
- ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; }) \
- { __l: 0x7f800000UL }).__d)
-
-# endif
-
-# else /* not GCC */
-
-typedef union { unsigned char __c[4]; float __f; } __huge_valf_t;
-
-# if __BYTE_ORDER == __BIG_ENDIAN
-# define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 }
-# endif
-# if __BYTE_ORDER == __LITTLE_ENDIAN
-# define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f }
-# endif
-
-static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
-# define HUGE_VALF (__huge_valf.__f)
-
-# endif /* GCC. */
-
-
-/* Generally there is no separate `long double' format and it is the
- same as `double'. */
-# define HUGE_VALL HUGE_VAL
-
-#endif /* __USE_ISOC99. */
projects / external / glibc.git / commitdiff