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authorUlrich Drepper <drepper@redhat.com>2000-10-15 06:50:42 +0000
committerUlrich Drepper <drepper@redhat.com>2000-10-15 06:50:42 +0000
commitb15cb495054a40644197395fb6a94daa4b0e81cb (patch)
tree085712cd0a7f5e68dc291c49c6adfb9c3675dcee /sysdeps/hppa/dl-machine.h
parent42be70d43174c6a6e80fbd25276d4eb04c6e5adf (diff)
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Update.
2000-10-14 Ulrich Drepper <drepper@redhat.com> * math/libm-test.inc (frexp_test): Add L suffix also to parameters. (hypot_test): Likewise. * sysdeps/generic/printf_fphex.c: Compute width of decimal point string correctly. Handle padding correctly. * sysdeps/ia64/fpu/printf_fphex.c: Use sizeof in _itowa parameters correctly. * sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise. * sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * FAQ.in: Add --start-group and --end-group. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * malloc/memusage.c: Conditionalize stack usage calculation on stack direction. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * config.h.in: Add ASM_LINE_SEP. * configure.in: Add test for comment and line separators. * include/libc-symbols.h: Define and use ASM_LINE_SEP, and add tabs to placate some hppa assemblers. * sysdeps/hppa/sysdep.h: Likewise. * sysdeps/gnu/siglist.c: Insert \n and \t into inline asm. * sysdeps/unix/sysv/linux/errlist.c: Likewise. 2000-10-12 David Huggins-Daines <dhd@linuxcare.com> * sysdeps/unix/sysv/linux/Makefile: Include <bits/initspin> in $(sysdep_headers). * sysdeps/unix/sysv/linux/bits/initspin.h: Dummy version for non-threaded platforms. 2000-10-12 David Huggins-Daines <dhd@linuxcare.com> * configure.in: Add definitions for hppa. * elf/elf.h: Add PLABEL32 relocation for hppa ELF32, comments for IPLT and EPLT relocations. * shlib-versions: Version symbol definitions for hppa-linux. * sysdeps/unix/sysv/linux/configure.in: Define $arch_minimum_kernel for hppa. 2000-10-12 David Huggins-Daines <dhd@linuxcare.com> * sysdeps/hppa/Makefile: New file. * sysdeps/hppa/Versions: New file. * sysdeps/hppa/setjmp.S: New file. * sysdeps/hppa/__longjmp.S: New file. * sysdeps/hppa/bits/setjmp.h: New file. * sysdeps/hppa/frame.h: New file. * sysdeps/hppa/add_n.s: Don't use %r19 (linkage table pointer). * sysdeps/hppa/sub_n.s: Likewise. * sysdeps/hppa/lshift.s: Likewise. * sysdeps/hppa/rshift.s: Likewise. * sysdeps/hppa/udiv_qrnnd.s: Likewise. * sysdeps/hppa/hppa1.1/addmul_1.s: Likewise. * sysdeps/hppa/hppa1.1/submul_1.s: Likewise. * sysdeps/hppa/hppa1.1/mul_1.s: Likewise. * sysdeps/hppa/hppa1.1/udiv_qrnnd.s: Likewise. * sysdeps/hppa/dl-machine.h: New file. * sysdeps/hppa/dl-fptr.c: New file (note that this is almost identical to the IA-64 one). * sysdeps/hppa/dl-lookupcfg.h: Likewise. * sysdeps/hppa/dl-symaddr.c: Likewise. * sysdeps/hppa/elf/initfini.c: New file. * sysdeps/hppa/elf/start.S: New file. * sysdeps/hppa/fpu/bits/fenv.h: New file. * sysdeps/hppa/fpu/fclrexcpt.c: New file. * sysdeps/hppa/fpu/fedisblxcpt.c: New file. * sysdeps/hppa/fpu/feenablxcpt.c: New file. * sysdeps/hppa/fpu/fegetenv.c: New file. * sysdeps/hppa/fpu/fegetexcept.c: New file. * sysdeps/hppa/fpu/fegetround.c: New file. * sysdeps/hppa/fpu/feholdexcpt.c: New file. * sysdeps/hppa/fpu/fesetenv.c: New file. * sysdeps/hppa/fpu/fesetround.c: New file. * sysdeps/hppa/fpu/feupdateenv.c: New file. * sysdeps/hppa/fpu/fegetexcptflg.c: New file. * sysdeps/hppa/fpu/fraiseexcpt.c: New file. * sysdeps/hppa/fpu/fsetexcptflg.c: New file. * sysdeps/hppa/fpu/ftestexcept.c: New file. * sysdeps/unix/sysv/linux/hppa/Makefile: New file. * sysdeps/unix/sysv/linux/hppa/Versions: New file. * sysdeps/unix/sysv/linux/hppa/syscalls.list: New file. * sysdeps/unix/sysv/linux/hppa/sysdep.c: New file. * sysdeps/unix/sysv/linux/hppa/sysdep.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/fcntl.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/ioctls.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/mman.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/sigaction.h: New file. * sysdeps/unix/sysv/linux/hppa/bits/signum.h: New file. * sysdeps/unix/sysv/linux/hppa/brk.c: New file. * sysdeps/unix/sysv/linux/hppa/clone.S: New file. * sysdeps/unix/sysv/linux/hppa/socket.S: New file. * sysdeps/unix/sysv/linux/hppa/syscall.S: New file. * sysdeps/unix/sysv/linux/hppa/setrlimit.c: New file. * sysdeps/unix/sysv/linux/hppa/getrlimit.c: New file. * sysdeps/unix/sysv/linux/hppa/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/hppa/kernel_sigaction.h: New file. * sysdeps/unix/sysv/linux/hppa/kernel_stat.h: New file. * sysdeps/unix/sysv/linux/hppa/mmap.c: New file. * sysdeps/unix/sysv/linux/hppa/profil-counter.h: New file. * sysdeps/unix/sysv/linux/hppa/procfs.h: New file. * sysdeps/unix/sysv/linux/hppa/ucontext.h: New file. * sysdeps/unix/sysv/linux/hppa/umount.c: New file. 2000-10-12 Alan Modra <alan@linuxcare.com.au> * sysdeps/hppa/hppa1.1/Implies: New file. * sysdeps/hppa/memusage.h: New file.
Diffstat (limited to 'sysdeps/hppa/dl-machine.h')
-rw-r--r--sysdeps/hppa/dl-machine.h605
1 files changed, 605 insertions, 0 deletions
diff --git a/sysdeps/hppa/dl-machine.h b/sysdeps/hppa/dl-machine.h
new file mode 100644
index 0000000000..e6782b3481
--- /dev/null
+++ b/sysdeps/hppa/dl-machine.h
@@ -0,0 +1,605 @@
+/* Machine-dependent ELF dynamic relocation inline functions. PA-RISC version.
+ Copyright (C) 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
+ Contributed by David Huggins-Daines <dhd@debian.org>
+ 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 1
+
+#define ELF_MACHINE_NAME "hppa"
+
+#include <sys/param.h>
+#include <string.h>
+#include <link.h>
+#include <assert.h>
+
+/* These must match the definition of the stub in bfd/elf32-hppa.c. */
+#define SIZEOF_PLT_STUB (4*4)
+#define GOT_FROM_PLT_STUB (4*4)
+
+/* A PLABEL is a function descriptor. Properly they consist of just
+ FUNC and GP. But we want to traverse a binary tree too. See
+ dl-fptr.c for the code (it may be made common between HPPA and
+ IA-64 in the future).
+
+ We call these 'fptr' to make it easier to steal code from IA-64. */
+
+/* ld.so currently has 12 PLABEL32 relocs. We'll keep this constant
+ large for now in case we require more, as the rest of these will be
+ used by the dynamic program itself (libc.so has quite a few
+ PLABEL32 relocs in it). */
+#define HPPA_BOOT_FPTR_SIZE 256
+
+struct hppa_fptr
+{
+ Elf32_Addr func;
+ Elf32_Addr gp;
+ struct hppa_fptr *next;
+};
+
+extern struct hppa_fptr __boot_ldso_fptr[];
+extern struct hppa_fptr *__fptr_root;
+extern int __fptr_count;
+
+extern Elf32_Addr __hppa_make_fptr (const struct link_map *, Elf32_Addr,
+ struct hppa_fptr **, struct hppa_fptr *);
+
+/* Return nonzero iff E_MACHINE is compatible with the running host. */
+static inline int
+elf_machine_matches_host (Elf32_Half e_machine)
+{
+ return e_machine == EM_PARISC;
+}
+
+
+/* Return the link-time address of _DYNAMIC. */
+static inline Elf32_Addr
+elf_machine_dynamic (void)
+{
+ Elf32_Addr dynamic;
+
+#if 0
+ /* Use this method if GOT address not yet set up. */
+ asm ("\
+ b,l 1f,%0
+ depi 0,31,2,%0
+1: addil L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 8),%0
+ ldw R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 12)(%%r1),%0"
+ : "=r" (dynamic) : : "r1");
+#else
+ /* This works because we already have our GOT address available. */
+ dynamic = (Elf32_Addr) &_DYNAMIC;
+#endif
+
+ return dynamic;
+}
+
+/* Return the run-time load address of the shared object. */
+static inline Elf32_Addr
+elf_machine_load_address (void)
+{
+ Elf32_Addr dynamic, dynamic_linkaddress;
+
+ asm ("\
+ b,l 1f,%0
+ depi 0,31,2,%0
+1: addil L'_DYNAMIC - ($PIC_pcrel$0 - 8),%0
+ ldo R'_DYNAMIC - ($PIC_pcrel$0 - 12)(%%r1),%1
+ addil L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 16),%0
+ ldw R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 20)(%%r1),%0"
+ : "=r" (dynamic_linkaddress), "=r" (dynamic) : : "r1");
+
+ return dynamic - dynamic_linkaddress;
+}
+
+/* Fixup a PLT entry to bounce directly to the function at VALUE. */
+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)
+{
+ /* l is the link_map for the caller, t is the link_map for the object
+ * being called */
+ reloc_addr[1] = D_PTR (t, l_info[DT_PLTGOT]);
+ reloc_addr[0] = value;
+ /* Return the PLT slot rather than the function value so that the
+ trampoline can load the new LTP. */
+ return (Elf32_Addr) reloc_addr;
+}
+
+/* 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)
+{
+ /* We are rela only */
+ return value + reloc->r_addend;
+}
+
+/* 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
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+ extern void _dl_runtime_resolve (void);
+ extern void _dl_runtime_profile (void);
+ Elf32_Addr jmprel = D_PTR(l, l_info[DT_JMPREL]);
+
+ if (lazy && jmprel)
+ {
+ Elf32_Addr *got = NULL;
+ Elf32_Addr l_addr;
+ Elf32_Addr end_jmprel;
+ Elf32_Addr iplt;
+
+ /* Relocate all the PLT slots. */
+ l_addr = l->l_addr;
+ end_jmprel = jmprel + l->l_info[DT_PLTRELSZ]->d_un.d_val;
+ for (iplt = jmprel; iplt < end_jmprel; iplt += sizeof (Elf32_Rela))
+ {
+ const Elf32_Rela *reloc;
+ Elf32_Word r_type;
+ Elf32_Word r_sym;
+ struct hppa_fptr *fptr;
+
+ reloc = (const Elf32_Rela *) iplt;
+ r_type = ELF32_R_TYPE (reloc->r_info);
+ r_sym = ELF32_R_SYM (reloc->r_info);
+
+ if (__builtin_expect (r_type == R_PARISC_IPLT, 1))
+ {
+ fptr = (struct hppa_fptr *) (reloc->r_offset + l_addr);
+ if (r_sym != 0)
+ {
+ /* Relocate the pointer to the stub. */
+ fptr->func += l_addr;
+ /* Instead of the LTP value, we put the reloc offset
+ here. The trampoline code will load the proper
+ LTP and pass the reloc offset to the fixup
+ function. */
+ fptr->gp = iplt - jmprel;
+ if (!got)
+ {
+ static union {
+ unsigned char c[8];
+ Elf32_Addr i[2];
+ } sig = {{0x00,0xc0,0xff,0xee, 0xde,0xad,0xbe,0xef}};
+
+ /* Find our .got section. It's right after the
+ stub. */
+ got = (Elf32_Addr *) (fptr->func + GOT_FROM_PLT_STUB);
+
+ /* Sanity check to see if the address we are
+ going to check below is within a reasonable
+ approximation of the bounds of the PLT (or,
+ at least, is at an address that won't fault
+ on read). Then check for the magic signature
+ above. */
+ if (fptr->func < (Elf32_Addr) fptr + sizeof(*fptr))
+ return 0;
+ if (fptr->func >
+ ((Elf32_Addr) fptr
+ + SIZEOF_PLT_STUB
+ + ((l->l_info[DT_PLTRELSZ]->d_un.d_val / sizeof (Elf32_Rela))
+ * 8)))
+ return 0;
+ if (got[-2] != sig.i[0] || got[-1] != sig.i[1])
+ return 0; /* No lazy linking for you! */
+ }
+ }
+ else
+ {
+ /* Relocate this *ABS* entry. */
+ fptr->func = reloc->r_addend + l_addr;
+ fptr->gp = D_PTR (l, l_info[DT_PLTGOT]);
+ }
+ }
+ else if (__builtin_expect (r_type != R_PARISC_NONE, 0))
+ _dl_reloc_bad_type (l, r_type, 1);
+ }
+
+ if (got)
+ {
+ register Elf32_Addr ltp __asm__ ("%r19");
+ /* Identify this shared object. */
+ got[1] = (Elf32_Addr) l;
+
+ /* This function will be called to perform the relocation. */
+ if (__builtin_expect (!profile, 1))
+ got[-2] =
+ (Elf32_Addr) ((struct hppa_fptr *)
+ ((unsigned long) &_dl_runtime_resolve & ~3))->func;
+ else
+ {
+ if (_dl_name_match_p (_dl_profile, l))
+ {
+ /* This is the object we are looking for. Say that
+ we really want profiling and the timers are
+ started. */
+ _dl_profile_map = l;
+ }
+ got[-2] =
+ (Elf32_Addr) ((struct hppa_fptr *)
+ ((unsigned long) &_dl_runtime_profile & ~3))->func;
+ }
+ got[-1] = ltp;
+ }
+ }
+ return lazy;
+}
+
+/* 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
+ .globl _start
+ .type _start,@function
+_start:
+ /* The kernel does not give us an initial stack frame. */
+ ldo 64(%sp),%sp
+ /* Save the relevant arguments (yes, those are the correct
+ registers, the kernel is weird) in their stack slots. */
+ stw %r25,-40(%sp) /* argc */
+ stw %r24,-44(%sp) /* argv */
+
+ /* We need the LTP, and we need it now. */
+ /* $PIC_pcrel$0 points 8 bytes past the current instruction,
+ just like a branch reloc. This sequence gets us the runtime
+ address of _DYNAMIC. */
+ bl 0f,%r19
+ depi 0,31,2,%r19 /* clear priviledge bits */
+0: addil L'_DYNAMIC - ($PIC_pcrel$0 - 8),%r19
+ ldo R'_DYNAMIC - ($PIC_pcrel$0 - 12)(%r1),%r26
+
+ /* Also get the link time address from the first entry of the GOT. */
+ addil L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 16),%r19
+ ldw R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 20)(%r1),%r20
+
+ sub %r26,%r20,%r20 /* Calculate load offset */
+
+ /* Rummage through the dynamic entries, looking for DT_PLTGOT. */
+ ldw,ma 8(%r26),%r19
+1: cmpib,=,n 3,%r19,2f /* tag == DT_PLTGOT? */
+ cmpib,<>,n 0,%r19,1b
+ ldw,ma 8(%r26),%r19
+
+ /* Uh oh! We didn't find one. Abort. */
+ iitlbp %r0,(%r0)
+
+2: ldw -4(%r26),%r19 /* Found it, load value. */
+ add %r19,%r20,%r19 /* And add the load offset. */
+
+ /* Our initial stack layout is rather different from everyone
+ else's due to the unique PA-RISC ABI. As far as I know it
+ looks like this:
+
+ ----------------------------------- (this frame created above)
+ | 32 bytes of magic |
+ |---------------------------------|
+ | 32 bytes argument/sp save area |
+ |---------------------------------| ((current->mm->env_end) + 63 & ~63)
+ | N bytes of slack |
+ |---------------------------------|
+ | envvar and arg strings |
+ |---------------------------------|
+ | ELF auxiliary info |
+ | (up to 28 words) |
+ |---------------------------------|
+ | Environment variable pointers |
+ | upwards to NULL |
+ |---------------------------------|
+ | Argument pointers |
+ | upwards to NULL |
+ |---------------------------------|
+ | argc (1 word) |
+ -----------------------------------
+
+ So, obviously, we can't just pass %sp to _dl_start. That's
+ okay, argv-4 will do just fine.
+
+ The pleasant part of this is that if we need to skip
+ arguments we can just decrement argc and move argv, because
+ the stack pointer is utterly unrelated to the location of
+ the environment and argument vectors. */
+
+ /* This is always within range so we'll be okay. */
+ bl _dl_start,%rp
+ ldo -4(%r24),%r26
+
+ /* FALLTHRU */
+ .globl _dl_start_user
+ .type _dl_start_user,@function
+_dl_start_user:
+ /* Save the entry point in %r3. */
+ copy %ret0,%r3
+
+ /* Remember the lowest stack address. */
+ addil LT'__libc_stack_end,%r19
+ ldw RT'__libc_stack_end(%r1),%r20
+ stw %sp,0(%r20)
+
+ /* See if we were called as a command with the executable file
+ name as an extra leading argument. */
+ addil LT'_dl_skip_args,%r19
+ ldw RT'_dl_skip_args(%r1),%r20
+ ldw 0(%r20),%r20
+
+ ldw -40(%sp),%r25 /* argc */
+ comib,= 0,%r20,.Lnofix /* FIXME: will be mispredicted */
+ ldw -44(%sp),%r24 /* argv (delay slot) */
+
+ sub %r25,%r20,%r25
+ stw %r25,-40(%sp)
+ sh2add %r20,%r24,%r24
+ stw %r24,-44(%sp)
+
+.Lnofix:
+ /* Call _dl_init(_dl_loaded, argc, argv, envp). */
+ addil LT'_dl_loaded,%r19
+ ldw RT'_dl_loaded(%r1),%r26
+ ldw 0(%r26),%r26
+ /* envp = argv + argc + 1 */
+ sh2add %r25,%r24,%r23
+ bl _dl_init,%r2
+ ldo 4(%r23),%r23 /* delay slot */
+
+ /* Reload argc, argv to the registers start.S expects them in (feh) */
+ ldw -40(%sp),%r25
+ ldw -44(%sp),%r24
+
+ /* _dl_fini does have a PLT slot now. I don't know how to get
+ to it though, so this hack will remain. */
+ .section .data
+__dl_fini_plabel:
+ .word _dl_fini
+ .word 0xdeadbeef
+ .previous
+
+ addil LT'__dl_fini_plabel,%r19
+ ldw RT'__dl_fini_plabel(%r1),%r23
+ stw %r19,4(%r23)
+ bv %r0(%r3)
+ depi 2,31,2,%r23 /* delay slot */");
+
+/* This code gets called via the .plt stub, and is used in
+ dl-runtime.c to call the `fixup' function and then redirect to the
+ address it returns.
+ Enter with r19 = reloc offset, r20 = got-8, r21 = fixup ltp. */
+#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \
+ extern void tramp_name (void); \
+ asm ( "\
+ /* Trampoline for " #tramp_name " */
+ .globl " #tramp_name "
+ .type " #tramp_name ",@function
+" #tramp_name ":
+ /* Save return pointer */
+ stw %r2,-20(%sp)
+ /* Save argument registers in the call stack frame. */
+ stw %r26,-36(%sp)
+ stw %r25,-40(%sp)
+ stw %r24,-44(%sp)
+ stw %r23,-48(%sp)
+ /* Build a call frame. */
+ stwm %sp,64(%sp)
+
+ /* Set up args to fixup func. */
+ ldw 8+4(%r20),%r26 /* got[1] == struct link_map * */
+ copy %r19,%r25 /* reloc offset */
+
+ /* Call the real address resolver. */
+ bl " #fixup_name ",%r2
+ copy %r21,%r19 /* delay slot, set fixup func ltp */
+
+ ldwm -64(%sp),%sp
+ /* Arguments. */
+ ldw -36(%sp),%r26
+ ldw -40(%sp),%r25
+ ldw -44(%sp),%r24
+ ldw -48(%sp),%r23
+ /* Return pointer. */
+ ldw -20(%sp),%r2
+ /* Call the real function. */
+ ldw 0(%r28),%r22
+ bv %r0(%r22)
+ ldw 4(%r28),%r19
+");
+
+#ifndef PROF
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+ TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
+ TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup);
+#else
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+ TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \
+ strong_alias (_dl_runtime_resolve, _dl_runtime_profile);
+#endif
+
+
+/* Nonzero iff TYPE describes a relocation that should
+ skip the executable when looking up the symbol value. */
+#define elf_machine_lookup_noexec_p(type) ((type) == R_PARISC_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_PARISC_IPLT \
+ || (type) == R_PARISC_EPLT)
+
+/* Used by ld.so for ... something ... */
+#define ELF_MACHINE_JMP_SLOT R_PARISC_IPLT
+
+/* We only use RELA. */
+#define ELF_MACHINE_NO_REL 1
+
+#endif /* !dl_machine_h */
+
+/* These are only actually used where RESOLVE_MAP is defined, anyway. */
+#ifdef RESOLVE_MAP
+
+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)
+{
+ const Elf32_Sym *const refsym = sym;
+ unsigned long const r_type = ELF32_R_TYPE (reloc->r_info);
+ struct link_map *sym_map;
+ Elf32_Addr value;
+
+#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);
+#endif
+
+ /* RESOLVE_MAP will return a null value for undefined syms, and
+ non-null for all other syms. In particular, relocs with no
+ symbol (symbol index of zero), also called *ABS* relocs, will be
+ resolved to MAP. (The first entry in a symbol table is all
+ zeros, and an all zero Elf32_Sym has a binding of STB_LOCAL.)
+ See RESOLVE_MAP definition in elf/dl-reloc.c */
+#ifdef RTLD_BOOTSTRAP
+ /* RESOLVE_MAP in rtld.c doesn't have the local sym test. */
+ sym_map = (ELF32_ST_BIND (sym->st_info) != STB_LOCAL
+ ? RESOLVE_MAP (&sym, version, r_type) : map);
+#else
+ sym_map = RESOLVE_MAP (&sym, version, r_type);
+#endif
+ if (sym_map)
+ {
+ value = sym ? sym_map->l_addr + sym->st_value : 0;
+ value += reloc->r_addend;
+ }
+ else
+ value = 0;
+
+ switch (r_type)
+ {
+ case R_PARISC_DIR32:
+#ifndef RTLD_BOOTSTRAP
+ /* All hell breaks loose if we try to relocate these twice,
+ because any initialized variables in ld.so that refer to
+ other ones will have their values reset. In particular,
+ __fptr_next will be reset, sometimes causing endless loops in
+ __hppa_make_fptr(). So don't do that. */
+ if (map == &_dl_rtld_map)
+ return;
+#endif
+ /* Otherwise, nothing more to do here. */
+ break;
+
+ case R_PARISC_PLABEL32:
+ /* Easy rule: If there is a symbol and it is global, then we
+ need to make a dynamic function descriptor. Otherwise we
+ have the address of a PLT slot for a local symbol which we
+ know to be unique. */
+ if (sym == NULL
+ || sym_map == NULL
+ || ELF32_ST_BIND (sym->st_info) == STB_LOCAL)
+ break;
+
+ /* Okay, we need to make ourselves a PLABEL then. See the IA64
+ code for an explanation of how this works. */
+#ifndef RTLD_BOOTSTRAP
+ value = __hppa_make_fptr (sym_map, value, &__fptr_root, NULL);
+#else
+ {
+ struct hppa_fptr *p_boot_ldso_fptr;
+ struct hppa_fptr **p_fptr_root;
+ int *p_fptr_count;
+ unsigned long dot;
+
+ /* Go from the top of __boot_ldso_fptr. As on IA64, we
+ probably haven't relocated the necessary values by this
+ point so we have to find them ourselves. */
+
+ asm ("bl 0f,%0
+ depi 0,31,2,%0
+0: addil L'__boot_ldso_fptr - ($PIC_pcrel$0 - 8),%0
+ ldo R'__boot_ldso_fptr - ($PIC_pcrel$0 - 12)(%%r1),%1
+ addil L'__fptr_root - ($PIC_pcrel$0 - 16),%0
+ ldo R'__fptr_root - ($PIC_pcrel$0 - 20)(%%r1),%2
+ addil L'__fptr_count - ($PIC_pcrel$0 - 24),%0
+ ldo R'__fptr_count - ($PIC_pcrel$0 - 28)(%%r1),%3"
+ :
+ "=r" (dot),
+ "=r" (p_boot_ldso_fptr),
+ "=r" (p_fptr_root),
+ "=r" (p_fptr_count));
+
+ value = __hppa_make_fptr (sym_map, value, p_fptr_root,
+ &p_boot_ldso_fptr[--*p_fptr_count]);
+ }
+#endif
+ break;
+
+ case R_PARISC_IPLT:
+ if (__builtin_expect (sym_map != NULL, 1))
+ elf_machine_fixup_plt (NULL, sym_map, reloc, reloc_addr, value);
+ else
+ {
+ /* If we get here, it's a (weak) undefined sym. */
+ elf_machine_fixup_plt (NULL, map, reloc, reloc_addr, value);
+ }
+ return;
+
+ case R_PARISC_COPY:
+ if (__builtin_expect (sym == NULL, 0))
+ /* This can happen in trace mode if an object could not be
+ found. */
+ break;
+ if (__builtin_expect (sym->st_size > refsym->st_size, 0)
+ || (__builtin_expect (sym->st_size < refsym->st_size, 0)
+ && __builtin_expect (_dl_verbose, 0)))
+ {
+ 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));
+ return;
+
+ case R_PARISC_NONE: /* Alright, Wilbur. */
+ return;
+
+ default:
+ _dl_reloc_bad_type (map, r_type, 0);
+ }
+
+ *reloc_addr = value;
+}
+
+static inline void
+elf_machine_lazy_rel (struct link_map *map,
+ Elf32_Addr l_addr, const Elf32_Rela *reloc)
+{
+ /* We don't have anything to do here. elf_machine_runtime_setup has
+ done all the relocs already. */
+}
+
+#endif /* RESOLVE_MAP */