/* * 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 * Copyright (C) 2002 Steven J. Hill * */ #include .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