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fix dynamic linker entry point for microblaze

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the ABI allows the callee to clobber stack slots that correspond to
arguments passed in registers, so the caller must adjust the stack
pointer to reserve space appropriately. prior to this fix, the argv
array was possibly clobbered by dynamic linker code before passing
control to the main program.
This commit is contained in:
Rich Felker 2013-12-14 19:51:48 -05:00
parent 2b7cf6dbb9
commit 0311d1dd17
1 changed files with 4 additions and 3 deletions
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7
src/ldso/microblaze/start.s
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@ -9,11 +9,12 @@ _start:
addi r7, r7, _GLOBAL_OFFSET_TABLE_+8
addi r7, r7, _DYNAMIC@GOTOFF
brlid r15, __reloc_self@PLT
nop
addik r1, r1, -16
lwi r5, r1, 0
lwi r5, r1, 16
brlid r15, __dynlink@PLT
addi r6, r1, 4
addi r6, r1, 20
addik r1, r1, 16
lwi r4, r1, 0
1: lwi r5, r1, 4