diff options
Diffstat (limited to 'sysdeps/s390/s390-64/dl-trampoline.h')
| -rw-r--r-- | sysdeps/s390/s390-64/dl-trampoline.h | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/sysdeps/s390/s390-64/dl-trampoline.h b/sysdeps/s390/s390-64/dl-trampoline.h deleted file mode 100644 index e1f95e2ecd..0000000000 --- a/sysdeps/s390/s390-64/dl-trampoline.h +++ /dev/null @@ -1,225 +0,0 @@ -/* PLT trampolines. s390x version. - Copyright (C) 2016-2017 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, see - <http://www.gnu.org/licenses/>. */ - -/* 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 - * v24, v26, v28, v30, v25, v27, v29, v31 : vector parameter registers - * 48(r15), 56(r15) : PLT arguments PLT1, PLT2 - * 160(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) - * f0 - f7 : call clobbered - * f8 - f15 : call saved - * v0 - v7 : bytes 0-7 overlap with f0-f7: call clobbered - bytes 8-15: call clobbered - * v8 - v15 : bytes 0-7 overlap with f8-f15: call saved - bytes 8-15: call clobbered - * v16 - v31 : call clobbered - */ - - .globl _dl_runtime_resolve - .type _dl_runtime_resolve, @function - cfi_startproc - .align 16 -_dl_runtime_resolve: - stmg %r2,%r5,64(%r15) # save call-clobbered argument registers - cfi_offset (r2, -96) - cfi_offset (r3, -88) - cfi_offset (r4, -80) - cfi_offset (r5, -72) - std %f0,104(%r15) - cfi_offset (f0, -56) - std %f2,112(%r15) - cfi_offset (f2, -48) - std %f4,120(%r15) - cfi_offset (f4, -40) - std %f6,128(%r15) - cfi_offset (f6, -32) - stg %r14,96(15) - cfi_offset (r14, -64) - lmg %r2,%r3,48(%r15) # load args for fixup saved by PLT - lgr %r0,%r15 -#ifdef RESTORE_VRS - aghi %r15,-288 # create stack frame - cfi_adjust_cfa_offset (288) - .machine push - .machine "z13" - vstm %v24,%v31,160(%r15)# store call-clobbered vector argument registers - cfi_offset (v24, -288) - cfi_offset (v25, -272) - cfi_offset (v26, -256) - cfi_offset (v27, -240) - cfi_offset (v28, -224) - cfi_offset (v29, -208) - cfi_offset (v30, -192) - cfi_offset (v31, -176) - .machine pop -#else - aghi %r15,-160 # create stack frame - cfi_adjust_cfa_offset (160) -#endif - stg %r0,0(%r15) # write backchain - brasl %r14,_dl_fixup # call _dl_fixup - lgr %r1,%r2 # function addr returned in r2 -#ifdef RESTORE_VRS - .machine push - .machine "z13" - vlm %v24,%v31,160(%r15)# restore vector registers - .machine pop - aghi %r15,288 # remove stack frame - cfi_adjust_cfa_offset (-288) -#else - aghi %r15,160 # remove stack frame - cfi_adjust_cfa_offset (-160) -#endif - lg %r14,96(%r15) # restore registers - ld %f0,104(%r15) - ld %f2,112(%r15) - ld %f4,120(%r15) - ld %f6,128(%r15) - lmg %r2,%r5,64(%r15) - br %r1 - cfi_endproc - .size _dl_runtime_resolve, .-_dl_runtime_resolve - - -#ifndef PROF - .globl _dl_runtime_profile - .type _dl_runtime_profile, @function - cfi_startproc - .align 16 -_dl_runtime_profile: - stg %r12,24(%r15) # r12 is used as backup of r15 - cfi_offset (r12, -136) - stg %r14,32(%r15) - cfi_offset (r14, -128) - lgr %r12,%r15 # backup stack pointer - cfi_def_cfa_register (12) - aghi %r15,-360 # create stack frame: - # 160 + sizeof(La_s390_64_regs) - stg %r12,0(%r15) # save backchain - - stmg %r2,%r6,160(%r15) # save call-clobbered arg regs - cfi_offset (r2, -360) # + r6 needed as arg for - cfi_offset (r3, -352) # _dl_profile_fixup - cfi_offset (r4, -344) - cfi_offset (r5, -336) - cfi_offset (r6, -328) - std %f0,200(%r15) - cfi_offset (f0, -320) - std %f2,208(%r15) - cfi_offset (f2, -312) - std %f4,216(%r15) - cfi_offset (f4, -304) - std %f6,224(%r15) - cfi_offset (f6, -296) -#ifdef RESTORE_VRS - .machine push - .machine "z13" - vstm %v24,%v31,232(%r15) # store call-clobbered vector arguments - cfi_offset (v24, -288) - cfi_offset (v25, -272) - cfi_offset (v26, -256) - cfi_offset (v27, -240) - cfi_offset (v28, -224) - cfi_offset (v29, -208) - cfi_offset (v30, -192) - cfi_offset (v31, -176) - .machine pop -#endif - lmg %r2,%r3,48(%r12) # load arguments saved by PLT - lgr %r4,%r14 # return address as third parameter - la %r5,160(%r15) # pointer to struct La_s390_64_regs - la %r6,40(%r12) # long int * framesize - brasl %r14,_dl_profile_fixup # call resolver - lgr %r1,%r2 # function addr returned in r2 - ld %f0,200(%r15) # restore call-clobbered arg fprs - ld %f2,208(%r15) - ld %f4,216(%r15) - ld %f6,224(%r15) -#ifdef RESTORE_VRS - .machine push - .machine "z13" - vlm %v24,%v31,232(%r15) # restore call-clobbered arg vrs - .machine pop -#endif - lg %r0,40(%r12) # load framesize - ltgr %r0,%r0 - jnm 1f - - lmg %r2,%r6,160(%r15) # framesize < 0 means no pltexit call - # so we can do a tail call without - # copying the arg overflow area - lgr %r15,%r12 # remove stack frame - cfi_def_cfa_register (15) - lg %r14,32(%r15) # restore registers - lg %r12,24(%r15) - br %r1 # tail-call to resolved function - - cfi_def_cfa_register (12) -1: la %r4,160(%r15) # pointer to struct La_s390_64_regs - stg %r4,64(%r12) - 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) # save backchain - 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) # depending on framesize - la %r3,8(%r3) - brctg %r0,3b -4: lmg %r2,%r6,0(%r4) # restore call-clobbered arg gprs - basr %r14,%r1 # call resolved function - stg %r2,72(%r12) # store return values r2, f0 - std %f0,80(%r12) # to struct La_s390_64_retval -#ifdef RESTORE_VRS - .machine push - .machine "z13" - vst %v24,88(%r12) # store return value v24 - .machine pop -#endif - lmg %r2,%r4,48(%r12) # r2, r3: load arguments saved by PLT - # r4: pointer to struct La_s390_64_regs - la %r5,72(%r12) # pointer to struct La_s390_64_retval - brasl %r14,_dl_call_pltexit - - lgr %r15,%r12 # remove stack frame - cfi_def_cfa_register (15) - lg %r14,32(%r15) # restore registers - lg %r12,24(%r15) - lg %r2,72(%r15) # restore return values - ld %f0,80(%r15) -#ifdef RESTORE_VRS - .machine push - .machine "z13" - vl %v24,88(%r15) # restore return value v24 - .machine pop -#endif - br %r14 # Jump back to caller - - cfi_endproc - .size _dl_runtime_profile, .-_dl_runtime_profile -#endif |