svn commit: trunk/uClibc/ldso: include ldso
bernds at uclibc.org
bernds at uclibc.org
Mon Dec 3 23:10:17 UTC 2007
Author: bernds
Date: 2007-12-03 15:10:14 -0800 (Mon, 03 Dec 2007)
New Revision: 20616
Log:
Blackfin FD-PIC patches 5/6.
A couple more target macros for ld.so to deal with FD-PIC support. We need
special code to compute the initial got and dpnt, and we need to pass extra
arguments to _dl_get_ready_to_run.
Modified:
trunk/uClibc/ldso/include/dl-defs.h
trunk/uClibc/ldso/include/ldso.h
trunk/uClibc/ldso/ldso/dl-startup.c
trunk/uClibc/ldso/ldso/ldso.c
Changeset:
Modified: trunk/uClibc/ldso/include/dl-defs.h
===================================================================
--- trunk/uClibc/ldso/include/dl-defs.h 2007-12-03 23:01:56 UTC (rev 20615)
+++ trunk/uClibc/ldso/include/dl-defs.h 2007-12-03 23:10:14 UTC (rev 20616)
@@ -95,6 +95,20 @@
((LOADADDR) + (ADDR))
#endif
+/* Initialize the location of the dynamic addr. This is only called
+ * from DL_START, so additional arguments passed to it may be referenced. */
+#ifndef DL_BOOT_COMPUTE_DYN
+#define DL_BOOT_COMPUTE_DYN(DPNT, GOT, LOAD_ADDR) \
+ ((DPNT) = ((ElfW(Dyn) *) DL_RELOC_ADDR(load_addr, got)))
+#endif
+
+/* Initialize the location of the global offset table. This is only called
+ * from DL_START, so additional arguments passed to it may be referenced. */
+#ifndef DL_BOOT_COMPUTE_GOT
+#define DL_BOOT_COMPUTE_GOT(GOT) \
+ ((GOT) = elf_machine_dynamic())
+#endif
+
/* Initialize a LOADADDR representing the loader itself. It's only
* called from DL_BOOT, so additional arguments passed to it may be
* referenced.
Modified: trunk/uClibc/ldso/include/ldso.h
===================================================================
--- trunk/uClibc/ldso/include/ldso.h 2007-12-03 23:01:56 UTC (rev 20615)
+++ trunk/uClibc/ldso/include/ldso.h 2007-12-03 23:10:14 UTC (rev 20616)
@@ -106,7 +106,15 @@
extern char *_dl_strdup(const char *string);
extern void _dl_dprintf(int, const char *, ...);
+#ifndef DL_GET_READY_TO_RUN_EXTRA_PARMS
+# define DL_GET_READY_TO_RUN_EXTRA_PARMS
+#endif
+#ifndef DL_GET_READY_TO_RUN_EXTRA_ARGS
+# define DL_GET_READY_TO_RUN_EXTRA_ARGS
+#endif
+
extern void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
- ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp, char **argv);
+ ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp, char **argv
+ DL_GET_READY_TO_RUN_EXTRA_PARMS);
#endif /* _LDSO_H_ */
Modified: trunk/uClibc/ldso/ldso/dl-startup.c
===================================================================
--- trunk/uClibc/ldso/ldso/dl-startup.c 2007-12-03 23:01:56 UTC (rev 20615)
+++ trunk/uClibc/ldso/ldso/dl-startup.c 2007-12-03 23:10:14 UTC (rev 20616)
@@ -192,8 +192,11 @@
* we can take advantage of the magic offset register, if we
* happen to know what that is for this architecture. If not,
* we can always read stuff out of the ELF file to find it... */
- got = elf_machine_dynamic();
- dpnt = (ElfW(Dyn) *) DL_RELOC_ADDR(load_addr, got);
+ DL_BOOT_COMPUTE_GOT(got);
+
+ /* Now, finally, fix up the location of the dynamic stuff */
+ DL_BOOT_COMPUTE_DYN (dpnt, got, load_addr);
+
SEND_EARLY_STDERR_DEBUG("First Dynamic section entry=");
SEND_ADDRESS_STDERR_DEBUG(dpnt, 1);
_dl_memset(tpnt, 0, sizeof(struct elf_resolve));
@@ -304,7 +307,8 @@
__rtld_stack_end = (void *)(argv - 1);
- _dl_get_ready_to_run(tpnt, load_addr, auxvt, envp, argv);
+ _dl_get_ready_to_run(tpnt, load_addr, auxvt, envp, argv
+ DL_GET_READY_TO_RUN_EXTRA_ARGS);
/* Transfer control to the application. */
Modified: trunk/uClibc/ldso/ldso/ldso.c
===================================================================
--- trunk/uClibc/ldso/ldso/ldso.c 2007-12-03 23:01:56 UTC (rev 20615)
+++ trunk/uClibc/ldso/ldso/ldso.c 2007-12-03 23:10:14 UTC (rev 20616)
@@ -131,8 +131,9 @@
}
void _dl_get_ready_to_run(struct elf_resolve *tpnt, DL_LOADADDR_TYPE load_addr,
- ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp,
- char **argv)
+ ElfW(auxv_t) auxvt[AT_EGID + 1], char **envp,
+ char **argv
+ DL_GET_READY_TO_RUN_EXTRA_PARMS)
{
ElfW(Phdr) *ppnt;
ElfW(Dyn) *dpnt;
@@ -313,7 +314,7 @@
/* OK, we have what we need - slip this one into the list. */
app_tpnt = _dl_add_elf_hash_table(_dl_progname, app_tpnt->loadaddr,
app_tpnt->dynamic_info,
- DL_RELOC_ADDR(app_tpnt->loadaddr, ppnt->p_vaddr),
+ (unsigned long) DL_RELOC_ADDR(app_tpnt->loadaddr, ppnt->p_vaddr),
ppnt->p_filesz);
_dl_loaded_modules->libtype = elf_executable;
_dl_loaded_modules->ppnt = (ElfW(Phdr) *) auxvt[AT_PHDR].a_un.a_val;
@@ -345,7 +346,7 @@
if (ptmp != _dl_ldsopath)
*ptmp = '\0';
- _dl_debug_early("Lib Loader: (%x) %s\n", DL_LOADADDR_BASE(tpnt->loadaddr), tpnt->libname);
+ _dl_debug_early("Lib Loader: (%x) %s\n", (unsigned) DL_LOADADDR_BASE(tpnt->loadaddr), tpnt->libname);
}
}
app_tpnt->relro_addr = relro_addr;
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