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Relocations cleanup

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-04-12 16:53:58 +02:00
parent 4e13e84e56
commit 28af3d867c
3 changed files with 51 additions and 37 deletions
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45
grub-core/kern/arm/dl.c
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@ -23,17 +23,11 @@
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/i18n.h>
#include <grub/arm/reloc.h>
#ifdef GRUB_UTIL
# include <grub/util/misc.h>
#else
# if !defined(__thumb2__)
# error "Relocations not implemented for A32 ("ARM") instruction set yet!"
# endif
grub_err_t reloc_jump24 (grub_uint32_t *addr, Elf32_Addr sym_addr);
grub_err_t reloc_thm_call (grub_uint16_t *addr, Elf32_Addr sym_addr);
grub_err_t reloc_thm_jump19 (grub_uint16_t *addr, Elf32_Addr sym_addr);
#ifdef DL_DEBUG
static const char *symstrtab;
@ -104,7 +98,7 @@ reloc_abs32 (Elf_Word *target, Elf_Addr sym_addr)
* B.W, BL and BLX
*/
grub_err_t
reloc_thm_call (grub_uint16_t *target, Elf32_Addr sym_addr)
grub_arm_reloc_thm_call (grub_uint16_t *target, Elf32_Addr sym_addr)
{
grub_int32_t offset, offset_low, offset_high;
grub_uint32_t sign, j1, j2, is_blx;
@ -122,14 +116,8 @@ reloc_thm_call (grub_uint16_t *target, Elf32_Addr sym_addr)
/* If BLX, target symbol must be ARM (target address LSB == 0) */
if (is_blx && (sym_addr & 1))
{
#ifndef GRUB_UTIL
return grub_error
(GRUB_ERR_BUG, N_("Relocation targeting wrong execution state"));
#else
grub_util_error ("Relocation targeting wrong execution state");
#endif
}
return grub_error (GRUB_ERR_BUG,
N_("Relocation targeting wrong execution state"));
offset_low = -16777216;
offset_high = is_blx ? 16777212 : 16777214;
@ -159,18 +147,12 @@ reloc_thm_call (grub_uint16_t *target, Elf32_Addr sym_addr)
#endif
if ((offset < offset_low) || (offset > offset_high))
{
#ifdef GRUB_UTIL
grub_util_error ("Relocation out of range");
#else
return grub_error
(GRUB_ERR_OUT_OF_RANGE, N_("THM_CALL Relocation out of range."));
#endif
}
return grub_error (GRUB_ERR_OUT_OF_RANGE,
N_("THM_CALL Relocation out of range."));
#ifdef GRUB_UTIL
grub_util_info (" relative destination = 0x%08x",
(unsigned int)target + offset);
grub_util_info (" relative destination = 0x%08lx",
(unsigned long)target + offset);
#endif
/* Reassemble instruction word */
@ -200,7 +182,7 @@ reloc_thm_call (grub_uint16_t *target, Elf32_Addr sym_addr)
* Relocate conditional Thumb (T32) B<c>.W
*/
grub_err_t
reloc_thm_jump19 (grub_uint16_t *addr, Elf32_Addr sym_addr)
grub_arm_reloc_thm_jump19 (grub_uint16_t *addr, Elf32_Addr sym_addr)
{
grub_int32_t offset;
grub_uint32_t insword, insmask;
@ -260,7 +242,7 @@ reloc_thm_jump19 (grub_uint16_t *addr, Elf32_Addr sym_addr)
* Relocate ARM (A32) B
*/
grub_err_t
reloc_jump24 (grub_uint32_t *addr, Elf32_Addr sym_addr)
grub_arm_reloc_jump24 (grub_uint32_t *addr, Elf32_Addr sym_addr)
{
grub_uint32_t insword;
grub_int32_t offset;
@ -358,9 +340,10 @@ do_relocations (Elf_Shdr * relhdr, Elf_Ehdr * e, grub_dl_t mod)
return retval;
}
break;
case R_ARM_CALL:
case R_ARM_JUMP24:
{
retval = reloc_jump24 (target, sym_addr);
retval = grub_arm_reloc_jump24 (target, sym_addr);
if (retval != GRUB_ERR_NONE)
return retval;
}
@ -369,7 +352,7 @@ do_relocations (Elf_Shdr * relhdr, Elf_Ehdr * e, grub_dl_t mod)
case R_ARM_THM_JUMP24:
{
/* Thumb instructions can be 16-bit aligned */
retval = reloc_thm_call ((grub_uint16_t *) target, sym_addr);
retval = grub_arm_reloc_thm_call ((grub_uint16_t *) target, sym_addr);
if (retval != GRUB_ERR_NONE)
return retval;
}
@ -377,7 +360,7 @@ do_relocations (Elf_Shdr * relhdr, Elf_Ehdr * e, grub_dl_t mod)
case R_ARM_THM_JUMP19:
{
/* Thumb instructions can be 16-bit aligned */
retval = reloc_thm_jump19 ((grub_uint16_t *) target, sym_addr);
retval = grub_arm_reloc_thm_jump19 ((grub_uint16_t *) target, sym_addr);
if (retval != GRUB_ERR_NONE)
return retval;
}