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- /*
- * Stolen from glibc-2.2.2 by David Schleef <ds@schleef.org>
- */
- .text
- .align 4
- .globl _dl_linux_resolver
- .globl _dl_linux_resolve
- .type _dl_linux_resolve,@function
- _dl_linux_resolve:
- // We need to save the registers used to pass parameters, and register 0,
- // which is used by _mcount; the registers are saved in a stack frame.
- stwu 1,-64(1)
- stw 0,12(1)
- stw 3,16(1)
- stw 4,20(1)
- // The code that calls this has put parameters for 'fixup' in r12 and r11.
- mr 3,12
- stw 5,24(1)
- mr 4,11
- stw 6,28(1)
- mflr 0
- // We also need to save some of the condition register fields.
- stw 7,32(1)
- stw 0,48(1)
- stw 8,36(1)
- mfcr 0
- stw 9,40(1)
- stw 10,44(1)
- stw 0,8(1)
- bl _dl_linux_resolver@local
- // 'fixup' returns the address we want to branch to.
- mtctr 3
- // Put the registers back...
- lwz 0,48(1)
- lwz 10,44(1)
- lwz 9,40(1)
- mtlr 0
- lwz 8,36(1)
- lwz 0,8(1)
- lwz 7,32(1)
- lwz 6,28(1)
- mtcrf 0xFF,0
- lwz 5,24(1)
- lwz 4,20(1)
- lwz 3,16(1)
- lwz 0,12(1)
- // ...unwind the stack frame, and jump to the PLT entry we updated.
- addi 1,1,64
- bctr
- .LFE2:
- .size _dl_linux_resolve,.LFE2-_dl_linux_resolve
- #if 0
- pusha /* preserve all regs */
- lea 0x20(%esp),%eax /* eax = tpnt and reloc_entry params */
- pushl 4(%eax) /* push copy of reloc_entry param */
- pushl (%eax) /* push copy of tpnt param */
-
- #ifdef __PIC__
- call .L24
- .L24:
- popl %ebx
- addl $_GLOBAL_OFFSET_TABLE_+[.-.L24],%ebx
- movl _dl_linux_resolver@GOT(%ebx),%ebx /* eax = resolved func */
- call *%ebx
- #else
- call _dl_linux_resolver
- #endif
- movl %eax,0x28(%esp) /* store func addr over original
- * tpnt param */
- addl $0x8,%esp /* remove copy parameters */
- popa /* restore regs */
- ret $4 /* jump to func removing original
- * reloc_entry param from stack */
- #endif
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