AuroraMiddleware/glibc
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2001-03-21  Alan Modra  <alan@one.net.au>

	* sysdeps/hppa/dl-machine.h (RTLD_START): Set up dp with DT_PLTGOT
	value from application so that constructors in non-PIC libs work.

2000-12-13  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/hppa/dl-machine.h (RTLD_START): _dl_init now returns a
	function pointer, hence load the jump address and gp from the
	function pointer before jumping.
This commit is contained in:
Ulrich Drepper 2001-04-24 19:40:16 +00:00
parent 2ee403d414
commit 1921e93466
2 changed files with 36 additions and 5 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
2001-03-21 Alan Modra <alan@one.net.au>
* sysdeps/hppa/dl-machine.h (RTLD_START): Set up dp with DT_PLTGOT
value from application so that constructors in non-PIC libs work.
2000-12-13 Jes Sorensen <jes@linuxcare.com>
* sysdeps/hppa/dl-machine.h (RTLD_START): _dl_init now returns a
function pointer, hence load the jump address and gp from the
function pointer before jumping.
2001-04-24 Andreas Jaeger <aj@suse.de>
* sysdeps/generic/send.c (__send): Return ssize_t.

30
sysdeps/hppa/dl-machine.h
View File

@ -248,7 +248,17 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
The C function `_dl_start' is the real entry point;
its return value is the user program's entry point. */
#define RTLD_START asm ("\
#define RTLD_START \
/* Set up dp for any non-PIC lib constructors that may be called. */ \
static struct link_map * set_dp (struct link_map *map) \
{ \
register Elf32_Addr dp asm ("%r27"); \
dp = D_PTR (map, l_info[DT_PLTGOT]); \
asm volatile ("" : : "r" (dp)); \
return map; \
} \
\
asm ("\
.text
.globl _start
.type _start,@function
@ -324,7 +334,6 @@ _start:
bl _dl_start,%rp
ldo -4(%r24),%r26
/* FALLTHRU */
.globl _dl_start_user
.type _dl_start_user,@function
_dl_start_user:
@ -352,10 +361,14 @@ _dl_start_user:
stw %r24,-44(%sp)
.Lnofix:
/* Call _dl_init(_dl_loaded, argc, argv, envp). */
addil LT'_dl_loaded,%r19
ldw RT'_dl_loaded(%r1),%r26
bl set_dp, %r2
ldw 0(%r26),%r26
/* Call _dl_init(_dl_loaded, argc, argv, envp). */
copy %r28,%r26
/* envp = argv + argc + 1 */
sh2add %r25,%r24,%r23
bl _dl_init,%r2
@ -373,11 +386,18 @@ __dl_fini_plabel:
.word 0xdeadbeef
.previous
/* %r3 contains a function pointer, we need to mask out the lower
* bits and load the gp and jump address. */
depi 0,31,2,%r3
ldw 0(%r3),%r2
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 */");
ldw 4(%r3),%r19 /* load the object's gp */
bv %r0(%r2)
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