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Add stubs for TLS.

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Arbitraly choose the 2nd variant until I figure out which one I should use.
This commit is contained in:
Olivier Houchard 2004-09-23 23:04:52 +00:00
parent eed605e0fe
commit 9ac88d19dc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=135680
4 changed files with 32 additions and 16 deletions
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13
libexec/rtld-elf/arm/reloc.c
View File

@ -90,13 +90,11 @@ _rtld_relocate_nonplt_self(Elf_Dyn *dynp, Elf_Addr relocbase)
}
rellim = (const Elf_Rel *)((caddr_t)rel + relsz);
size = (rellim - 1)->r_offset - rel->r_offset;
mprotect((void*)relocbase, size, PROT_READ|PROT_WRITE|PROT_EXEC);
for (; rel < rellim; rel++) {
where = (Elf_Addr *)(relocbase + rel->r_offset);
*where += (Elf_Addr)relocbase;
}
mprotect((void*)relocbase, size, PROT_READ|PROT_EXEC);
}
/*
* It is possible for the compiler to emit relocations for unaligned data.
@ -339,3 +337,14 @@ reloc_jmpslot(Elf_Addr *where, Elf_Addr target, const Obj_Entry *defobj,
return target;
}
void
allocate_initial_tls(Obj_Entry *objs)
{
}
void *
__tls_get_addr(tls_index* ti)
{
return (NULL);
}

23
libexec/rtld-elf/arm/rtld_machdep.h
View File

@ -37,14 +37,8 @@
struct Struct_Obj_Entry;
/* Return the address of the .dynamic section in the dynamic linker. */
#if 0
#define rtld_dynamic(obj) \
((const Elf_Dyn *)((obj)->relocbase + (Elf_Addr)&_DYNAMIC))
#endif
#if 0
#define rtld_dynamic(obj) (&_DYNAMIC)
#endif
#define rtld_dynamic(obj) (const Elf_Dyn *)((obj)->relocbase)
Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
const struct Struct_Obj_Entry *defobj,
const struct Struct_Obj_Entry *obj,
@ -55,10 +49,25 @@ Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
#define call_initfini_pointer(obj, target) \
(((InitFunc)(target))())
typedef struct {
unsigned long ti_module;
unsigned long ti_offset;
} tls_index;
#define round(size, align) \
(((size) + (align) - 1) & ~((align) - 1))
#define calculate_first_tls_offset(size, align) \
round(size, align)
#define calculate_tls_offset(prev_offset, prev_size, size, align) \
round(prev_offset + prev_size, align)
#define calculate_tls_end(off, size) ((off) + (size))
/*
* Lazy binding entry point, called via PLT.
*/
void _rtld_bind_start(void);
extern void *__tls_get_addr(tls_index *ti);
#endif

9
libexec/rtld-elf/arm/rtld_start.S
View File

@ -60,17 +60,14 @@ __FBSDID("$FreeBSD$");
bl _rtld_relocate_nonplt_self
mov r1, sp
add r2, sp, #4
mov r0, r6 /* sp */
mov r0, r6 /* sp */
bl _rtld /* call the shared loader */
mov r3, r0 /* save entry point */
ldr r1, [sp, #0] /* r2 = cleanup */
ldr r0, [sp, #4] /* r1 = obj_main */
ldr r2, [sp, #0] /* r2 = cleanup */
ldr r1, [sp, #4] /* r1 = obj_main */
add sp, sp, #8 /* restore stack */
#if 0
mov r0, r4 /* restore ps_strings */
#endif
mov r2, #0
mov pc, r3 /* jump to the entry point */
.L2:
.word _GLOBAL_OFFSET_TABLE_ - (.L1+8)

3
libexec/rtld-elf/rtld.c
View File

@ -2607,7 +2607,8 @@ free_tls(void *tls, size_t tcbsize, size_t tcbalign)
#endif
#if defined(__i386__) || defined(__amd64__) || defined(__sparc64__)
#if defined(__i386__) || defined(__amd64__) || defined(__sparc64__) || \
defined(__arm__)
/*
* Allocate Static TLS using the Variant II method.