diff options
Diffstat (limited to 'sysdeps/s390/s390-64/dl-trampoline.S')
| -rw-r--r-- | sysdeps/s390/s390-64/dl-trampoline.S | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/sysdeps/s390/s390-64/dl-trampoline.S b/sysdeps/s390/s390-64/dl-trampoline.S deleted file mode 100644 index 215d869803..0000000000 --- a/sysdeps/s390/s390-64/dl-trampoline.S +++ /dev/null @@ -1,126 +0,0 @@ -/* PLT trampolines. s390 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. */ - -/* The PLT stubs will call _dl_runtime_resolve/_dl_runtime_profile - * with the following linkage: - * r2 - r6 : parameter registers - * f0, f2, f4, f6 : floating point parameter registers - * 24(r15), 28(r15) : PLT arguments PLT1, PLT2 - * 96(r15) : additional stack parameters - * The normal clobber rules for function calls apply: - * r0 - r5 : call clobbered - * r6 - r13 : call saved - * r14 : return address (call clobbered) - * r15 : stack pointer (call saved) - * f1, f3, f5, f7 : call saved - * f0 - f3, f5, f7 - f15 : call clobbered - */ - -#include <sysdep.h> - - .text - .globl _dl_runtime_resolve - .type _dl_runtime_resolve, @function - cfi_startproc - .align 16 -_dl_runtime_resolve: - stmg 2,5,64(15) # save registers - stg 14,96(15) - lgr 0,15 # create stack frame - aghi 15,-160 - cfi_adjust_cfa_offset (160) - stg 0,0(15) - lmg 2,3,208(15) # load args saved by PLT - brasl 14,_dl_fixup # call fixup - lgr 1,2 # function addr returned in r2 - aghi 15,160 # remove stack frame - cfi_adjust_cfa_offset (-160) - lg 14,96(15) # restore registers - lmg 2,5,64(15) - br 1 - cfi_endproc - .size _dl_runtime_resolve, .-_dl_runtime_resolve - - - .globl _dl_runtime_profile - .type _dl_runtime_profile, @function - cfi_startproc - .align 16 -_dl_runtime_profile: - stmg %r2,%r6,64(%r15) # save registers - std %f0,104(%r15) - std %f2,112(%r15) - std %f4,120(%r15) - std %f6,128(%r15) - stg %r6,16(%r15) - stg %r12,24(%r15) - stg %r14,32(%r15) - lgr %r12,%r15 # create stack frame - cfi_def_cfa_register (12) - aghi %r15,-160 - stg %r12,0(%r15) - lmg %r2,%r3,48(%r12) # load arguments saved by PLT - lgr %r4,%r14 # return address as third parameter - la %r5,64(%r12) # pointer to struct La_s390_32_regs - la %r6,40(%r12) # long int * framesize - brasl %r14,_dl_profile_fixup # call resolver - lgr %r1,%r2 # function addr returned in r2 - lg %r0,40(%r12) # load framesize - ltgr %r0,%r0 - jnm 1f - lmg %r2,%r6,64(%r12) - ld %f0,104(%r12) - ld %f2,112(%r12) - ld %f4,120(%r12) - ld %f6,128(%r12) - basr %r14,%r1 # call resolved function -0: lr %r15,%r12 # remove stack frame - cfi_def_cfa_register (15) - lg %r14,32(%r15) # restore registers - lg %r12,24(%r15) - lg %r6,16(%r15) - br %r14 - cfi_def_cfa_register (12) -1: jz 4f # framesize == 0 ? - aghi %r0,7 # align framesize to 8 - nill %r0,0xfff8 - slgr %r15,%r0 # make room for framesize bytes - stg %r12,0(%r15) - la %r2,160(%r15) - la %r3,160(%r12) - srlg %r0,%r0,3 -3: mvc 0(8,%r2),0(%r3) # copy additional parameters - la %r2,8(%r2) - la %r3,8(%r3) - brctg %r0,3b -4: lmg %r2,%r6,64(%r12) # load register parameters - ld %f0,104(%r12) - ld %f2,112(%r12) - ld %f4,120(%r12) - ld %f6,128(%r12) - basr %r14,%r1 # call resolved function - stg %r2,136(%r12) - std %f0,144(%r12) - lmg %r2,%r3,48(%r12) # load arguments saved by PLT - la %r4,32(%r12) # pointer to struct La_s390_32_regs - la %r5,72(%r12) # pointer to struct La_s390_32_retval - brasl %r14,_dl_call_pltexit - j 0b - cfi_endproc - .size _dl_runtime_profile, .-_dl_runtime_profile |