* sysdeps/sh/Dist: Removed. There is no ieee754.h file.
* sysdeps/sh/sh3/dl-machine.h: Moved to...
* sysdeps/sh/dl-machine.h: ...here. New file.
* sysdeps/sh/sh4/dl-machine.h: Simply define KERNEL_MATH_EMULATION
and include generic SH version.
* sysdeps/sh/sh3/bits/endian.h: Move to...
* sysdeps/sh/bits/endian.h: ...here. New file.
* sysdeps/sh/sh4/bits/endian.h: Removed.
* sysdeps/sh/sh3/bits/huge_val.h: Move to...
* sysdeps/sh/bits/huge_val.h: ...here. New file.
* sysdeps/sh/sh4/bits/huge_val.h: Removed.
GAS which warns about changing section attributes.
Proposed by Nick Clifton <nickc@redhat.com>.
* sysdeps/sh/elf/initfini.c: New file.
* sysdeps/sh/elf/start.S: New file.
* sysdeps/sh/sys/ucontext.h: New file.
2000-06-12 Ulrich Drepper <drepper@redhat.com>
+ * sysdeps/sh/Dist: Removed. There is no ieee754.h file.
+ * sysdeps/sh/sh3/dl-machine.h: Moved to...
+ * sysdeps/sh/dl-machine.h: ...here. New file.
+ * sysdeps/sh/sh4/dl-machine.h: Simply define KERNEL_MATH_EMULATION
+ and include generic SH version.
+ * sysdeps/sh/sh3/bits/endian.h: Move to...
+ * sysdeps/sh/bits/endian.h: ...here. New file.
+ * sysdeps/sh/sh4/bits/endian.h: Removed.
+ * sysdeps/sh/sh3/bits/huge_val.h: Move to...
+ * sysdeps/sh/bits/huge_val.h: ...here. New file.
+ * sysdeps/sh/sh4/bits/huge_val.h: Removed.
+
* include/libc-symbols.h (link_warning): Work around a change in
- GAS which wrns about changing section attributes.
- Proposed by Nich Clifton <nickc@redhat.com>.
+ GAS which warns about changing section attributes.
+ Proposed by Nick Clifton <nickc@redhat.com>.
2000-06-12 H.J. Lu <hjl@gnu.org>
* sysdeps/sh/Dist: New file.
* sysdeps/sh/Implies: New file.
+ * sysdeps/sh/elf/initfini.c: New file.
* sysdeps/sh/gmp-mparam.h: New file.
* sysdeps/sh/init-first.c: New file.
* sysdeps/sh/machine-gmon.h: New file.
* sysdeps/sh/sh3/bsd-_setjmp.S: New file.
* sysdeps/sh/sh3/bsd-setjmp.S: New file.
* sysdeps/sh/sh3/dl-machine.h: New file.
- * sysdeps/sh/sh3/elf/initfini.c: New file.
- * sysdeps/sh/sh3/elf/start.S: New file.
* sysdeps/sh/sh3/setjmp.S: New file.
- * sysdeps/sh/sh3/sys/ucontext.h: New file.
* sysdeps/sh/sh4/__longjmp.S: New file.
* sysdeps/sh/sh4/bits/endian.h: New file.
* sysdeps/sh/sh4/bits/huge_val.h: New file.
* sysdeps/sh/sh4/bsd-_setjmp.S: New file.
* sysdeps/sh/sh4/bsd-setjmp.S: New file.
* sysdeps/sh/sh4/dl-machine.h: New file.
- * sysdeps/sh/sh4/elf/initfini.c: New file.
- * sysdeps/sh/sh4/elf/start.S: New file.
* sysdeps/sh/sh4/fpu/bits/fenv.h: New file.
* sysdeps/sh/sh4/fpu/bits/huge_val.h: New file.
* sysdeps/sh/sh4/fpu/bits/mathdef.h: New file.
* sysdeps/sh/sh4/fpu/ftestexcept.c: New file.
* sysdeps/sh/sh4/fpu/libm-test-ulps: New file.
* sysdeps/sh/sh4/setjmp.S: New file.
- * sysdeps/sh/sh4/sys/ucontext.h: New file.
+ * sysdeps/sh/elf/start.S: New file.
+ * sysdeps/sh/sys/ucontext.h: New file.
* sysdeps/sh/strlen.S: New file.
* sysdeps/sh/sysdep.h: New file.
* sysdeps/unix/sh/sysdep.S: New file.
--- /dev/null
+/* Machine-dependent ELF dynamic relocation inline functions. SH 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 */
-/* Machine-dependent ELF dynamic relocation inline functions. SH-4 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
-
-#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"
-
-#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 */
+#define KERNEL_MATH_EMULATION
+#include <sysdeps/sh/dl-machine.h>
projects / platform / upstream / linaro-glibc.git / commitdiff