diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/dl-trampoline.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/dl-trampoline.S | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/dl-trampoline.S b/sysdeps/powerpc/powerpc64/dl-trampoline.S new file mode 100644 index 0000000000..71d16f2dba --- /dev/null +++ b/sysdeps/powerpc/powerpc64/dl-trampoline.S @@ -0,0 +1,118 @@ +/* PLT trampolines. PPC64 version. + Copyright (C) 2005 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> + + .section ".text" + +EALIGN(_dl_runtime_resolve, 4, 0) +/* We need to save the registers used to pass parameters, ie. r3 thru + r10; the registers are saved in a stack frame. */ + stdu 1,-128(1) + std 3,48(1) + mr 3,11 + std 4,56(1) + sldi 4,0,1 + std 5,64(1) + add 4,4,0 + std 6,72(1) + sldi 4,4,3 + std 7,80(1) + mflr 0 + std 8,88(1) +/* Store the LR in the LR Save area of the previous frame. */ + std 0,128+16(1) + mfcr 0 + std 9,96(1) + std 10,104(1) +/* I'm almost certain we don't have to save cr... be safe. */ + std 0,8(1) + bl JUMPTARGET(_dl_fixup) +/* Put the registers back. */ + ld 0,128+16(1) + ld 10,104(1) + ld 9,96(1) + ld 8,88(1) + ld 7,80(1) + mtlr 0 + ld 0,8(1) + ld 6,72(1) + ld 5,64(1) + ld 4,56(1) + mtcrf 0xFF,0 +/* Load the target address, toc and static chain reg from the function + descriptor returned by fixup. */ + ld 0,0(3) + ld 2,8(3) + mtctr 0 + ld 11,16(3) + ld 3,48(1) +/* Unwind the stack frame, and jump. */ + addi 1,1,128 + bctr +END(_dl_runtime_resolve) + + + +EALIGN(_dl_profile_resolve, 4, 0) +/* We need to save the registers used to pass parameters, ie. r3 thru + r10; the registers are saved in a stack frame. */ + stdu 1,-128(1) + std 3,48(1) + mr 3,11 + std 4,56(1) + sldi 4,0,1 + std 5,64(1) + add 4,4,0 + std 6,72(1) + sldi 4,4,3 + std 7,80(1) + mflr 0 + std 8,88(1) +/* Store the LR in the LR Save area of the previous frame. */ + std 0,128+16(1) + mfcr 0 + std 9,96(1) + std 10,104(1) +/* I'm almost certain we don't have to save cr... be safe. */ + std 0,8(1) + bl JUMPTARGET(_dl_profile_fixup) +/* Put the registers back. */ + ld 0,128+16(1) + ld 10,104(1) + ld 9,96(1) + ld 8,88(1) + ld 7,80(1) + mtlr 0 + ld 0,8(1) + ld 6,72(1) + ld 5,64(1) + ld 4,56(1) + mtcrf 0xFF,0 +/* Load the target address, toc and static chain reg from the function + descriptor returned by fixup. */ + ld 0,0(3) + ld 2,8(3) + mtctr 0 + ld 11,16(3) + ld 3,48(1) +/* Unwind the stack frame, and jump. */ + addi 1,1,128 + bctr +END(_dl_profile_resolve) |