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/*
* Linux dynamic resolving code for MIPS. Fixes up the GOT entry as
* indicated in register t8 and jumps to the resolved address. Shamelessly
* ripped from 'sysdeps/mips/dl-machine.h' in glibc-2.2.5.
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License. See the file "COPYING.LIB" in the main directory of this
* archive for more details.
*
* Copyright (C) 1996-2001 Kazumoto Kojima <kkojima@info.kanagawa-u.ac.jp>
* Copyright (C) 2002 Steven J. Hill <sjhill@realitydiluted.com>
*
*/
#include <sgidefs.h>
.text
.align 2
.globl _dl_runtime_resolve
.type _dl_runtime_resolve,@function
.ent _dl_runtime_resolve
_dl_runtime_resolve:
#if _MIPS_SIM == _MIPS_SIM_ABI32
.frame $29, 40, $31
.set noreorder
/* Save GP. */
move $3, $28
/* Save arguments and sp value on stack. */
subu $29, 40
/* Modify t9 ($25) so as to point .cpload instruction. */
addiu $25, 12
/* Compute GP. */
.set noreorder
.cpload $25
.set reorder
/* Save slot call pc. */
move $2, $31
.cprestore 32
/* Store function arguments from registers to stack */
sw $15, 36($29)
sw $4, 16($29)
sw $5, 20($29)
sw $6, 24($29)
sw $7, 28($29)
/* Setup functions args and call __dl_runtime_resolve */
move $4, $24
move $5, $3
jal __dl_runtime_resolve
/* Restore function arguments from stack to registers */
lw $31, 36($29)
lw $4, 16($29)
lw $5, 20($29)
lw $6, 24($29)
lw $7, 28($29)
/* Do a tail call to the original function */
addiu $29, 40
#else /* N32 || N64 */
.set noreorder
/* Save GP. */
move $3, $28
/* Save arguments and sp value on stack. */
dsubu $29, 80
/* Compute GP. */
.set noreorder
.cpsetup $25, 0, _dl_runtime_resolve
.set reorder
/* Store function arguments from registers to stack */
sd $15, 72($29)
sd $4, 8($29)
sd $5, 16($29)
sd $6, 24($29)
sd $7, 32($29)
sd $8, 40($29)
sd $9, 48($29)
sd $10, 56($29)
sd $11, 64($29)
/* Setup functions args and call __dl_runtime_resolve */
move $4, $24
move $5, $3
jal __dl_runtime_resolve
/* Restore function arguments from stack to registers */
ld $31, 72($29)
ld $4, 8($29)
ld $5, 16($29)
ld $6, 24($29)
ld $7, 32($29)
ld $8, 40($29)
ld $9, 48($29)
ld $10, 56($29)
ld $11, 64($29)
/* Do a tail call to the original function */
.cpreturn
daddu $29, 80
#endif /* N32 || N64 */
move $25, $2
jr $25
.end _dl_runtime_resolve
.previous
/* Assembler veneer called from the PLT header code when using the
non-PIC ABI.
Code in each PLT entry puts the caller's return address into t7 ($15),
the PLT entry index into t8 ($24), the address of _dl_runtime_pltresolve
into t9 ($25) and the address of .got.plt into gp ($28). __dl_runtime_pltresolve
needs a0 ($4) to hold the link map and a1 ($5) to hold the index into
.rel.plt (== PLT entry index * 4). */
.text
.align 2
.globl _dl_runtime_pltresolve
.type _dl_runtime_pltresolve,@function
.ent _dl_runtime_pltresolve
_dl_runtime_pltresolve:
.frame $29, 40, $31
.set noreorder
# Save arguments and sp value in stack.
subu $29, 40
lw $10, 4($28)
# Modify t9 ($25) so as to point .cpload instruction.
addiu $25, 12
# Compute GP.
.cpload $25
.set reorder
/* Store function arguments from registers to stack */
sw $15, 36($29)
sw $4, 16($29)
sw $5, 20($29)
sw $6, 24($29)
sw $7, 28($29)
/* Setup functions args and call __dl_runtime_pltresolve. */
move $4, $10
sll $5, $24, 3
jal __dl_runtime_pltresolve
/* Restore function arguments from stack to registers */
lw $31, 36($29)
lw $4, 16($29)
lw $5, 20($29)
lw $6, 24($29)
lw $7, 28($29)
/* Do a tail call to the original function */
addiu $29, 40
move $25, $2
jr $25
.end _dl_runtime_pltresolve
.previous
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