diff options
Diffstat (limited to 'sysdeps/s390/s390-32/dl-trampoline.h')
| -rw-r--r-- | sysdeps/s390/s390-32/dl-trampoline.h | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/sysdeps/s390/s390-32/dl-trampoline.h b/sysdeps/s390/s390-32/dl-trampoline.h deleted file mode 100644 index 19776eec8a..0000000000 --- a/sysdeps/s390/s390-32/dl-trampoline.h +++ /dev/null @@ -1,231 +0,0 @@ -/* PLT trampolines. s390 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/>. */ - -/* This code is used in dl-runtime.c to call the `fixup' function - and then redirect to the address it returns. */ - -/* The PLT stubs will call _dl_runtime_resolve/_dl_runtime_profile - * with the following linkage: - * r2 - r6 : parameter registers - * f0, f2 : floating point parameter registers - * v24, v26, v28, v30, v25, v27, v29, v31 : vector 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) - * f4, f6 : call saved - * f0 - f3, f5, f7 - f15 : call clobbered - * v0 - v3, v5, v7 - v15 : bytes 0-7 overlap with fprs: call clobbered - bytes 8-15: call clobbered - * v4, v6 : bytes 0-7 overlap with f4, f6: 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: - stm %r2,%r5,32(%r15) # save registers - cfi_offset (r2, -64) - cfi_offset (r3, -60) - cfi_offset (r4, -56) - cfi_offset (r5, -52) - std %f0,56(%r15) - cfi_offset (f0, -40) - std %f2,64(%r15) - cfi_offset (f2, -32) - st %r14,8(%r15) - cfi_offset (r14, -88) - lr %r0,%r15 - lm %r2,%r3,24(%r15) # load args saved by PLT -#ifdef RESTORE_VRS - ahi %r15,-224 # create stack frame - cfi_adjust_cfa_offset (224) - .machine push - .machine "z13" - .machinemode "zarch_nohighgprs" - vstm %v24,%v31,96(%r15) # store call-clobbered vr arguments - cfi_offset (v24, -224) - cfi_offset (v25, -208) - cfi_offset (v26, -192) - cfi_offset (v27, -176) - cfi_offset (v28, -160) - cfi_offset (v29, -144) - cfi_offset (v30, -128) - cfi_offset (v31, -112) - .machine pop -#else - ahi %r15,-96 # create stack frame - cfi_adjust_cfa_offset (96) -#endif - st %r0,0(%r15) # write backchain - basr %r1,0 -0: l %r14,1f-0b(%r1) - bas %r14,0(%r14,%r1) # call _dl_fixup - lr %r1,%r2 # function addr returned in r2 -#ifdef RESTORE_VRS - .machine push - .machine "z13" - .machinemode "zarch_nohighgprs" - vlm %v24,%v31,96(%r15) # restore vector registers - .machine pop - ahi %r15,224 # remove stack frame - cfi_adjust_cfa_offset (-224) -#else - ahi %r15,96 # remove stack frame - cfi_adjust_cfa_offset (-96) -#endif - l %r14,8(15) # restore registers - ld %f0,56(%r15) - ld %f2,64(%r15) - lm %r2,%r5,32(%r15) - br %r1 -1: .long _dl_fixup - 0b - 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: - st %r12,12(%r15) # r12 is used as backup of r15 - cfi_offset (r12, -84) - st %r14,16(%r15) - cfi_offset (r14, -80) - lr %r12,%r15 # backup stack pointer - cfi_def_cfa_register (12) - ahi %r15,-264 # create stack frame: - # 96 + sizeof(La_s390_32_regs) - st %r12,0(%r15) # save backchain - - stm %r2,%r6,96(%r15) # save registers - cfi_offset (r2, -264) # + r6 needed as arg for - cfi_offset (r3, -260) # _dl_profile_fixup - cfi_offset (r4, -256) - cfi_offset (r5, -252) - cfi_offset (r6, -248) - std %f0,120(%r15) - cfi_offset (f0, -240) - std %f2,128(%r15) - cfi_offset (f2, -232) -#ifdef RESTORE_VRS - .machine push - .machine "z13" - .machinemode "zarch_nohighgprs" - vstm %v24,%v31,136(%r15) # store call-clobbered vr arguments - cfi_offset (v24, -224) - cfi_offset (v25, -208) - cfi_offset (v26, -192) - cfi_offset (v27, -176) - cfi_offset (v28, -160) - cfi_offset (v29, -144) - cfi_offset (v30, -128) - cfi_offset (v31, -112) - .machine pop -#endif - - lm %r2,%r3,24(%r12) # load arguments saved by PLT - lr %r4,%r14 # return address as third parameter - basr %r1,0 -0: l %r14,6f-0b(%r1) - la %r5,96(%r15) # pointer to struct La_s390_32_regs - la %r6,20(%r12) # long int * framesize - bas %r14,0(%r14,%r1) # call resolver - lr %r1,%r2 # function addr returned in r2 - ld %f0,120(%r15) # restore call-clobbered arg fprs - ld %f2,128(%r15) -#ifdef RESTORE_VRS - .machine push - .machine "z13" - .machinemode "zarch_nohighgprs" - vlm %v24,%v31,136(%r15) # restore call-clobbered arg vrs - .machine pop -#endif - icm %r0,15,20(%r12) # load & test framesize - jnm 2f - - lm %r2,%r6,96(%r15) # framesize < 0 means no pltexit call - # so we can do a tail call without - # copying the arg overflow area - lr %r15,%r12 # remove stack frame - cfi_def_cfa_register (15) - l %r14,16(%r15) # restore registers - l %r12,12(%r15) - br %r1 # tail-call to the resolved function - - cfi_def_cfa_register (12) -2: la %r4,96(%r15) # pointer to struct La_s390_32_regs - st %r4,32(%r12) - jz 4f # framesize == 0 ? - ahi %r0,7 # align framesize to 8 - lhi %r2,-8 - nr %r0,%r2 - slr %r15,%r0 # make room for framesize bytes - st %r12,0(%r15) # save backchain - la %r2,96(%r15) - la %r3,96(%r12) - srl %r0,3 -3: mvc 0(8,%r2),0(%r3) # copy additional parameters - la %r2,8(%r2) - la %r3,8(%r3) - brct %r0,3b -4: lm %r2,%r6,0(%r4) # load register parameters - basr %r14,%r1 # call resolved function - stm %r2,%r3,40(%r12) # store return values r2, r3, f0 - std %f0,48(%r12) # to struct La_s390_32_retval -#ifdef RESTORE_VRS - .machine push - .machine "z13" - vst %v24,56(%r12) # store return value v24 - .machine pop -#endif - lm %r2,%r4,24(%r12) # r2, r3: load arguments saved by PLT - # r4: pointer to struct La_s390_32_regs - basr %r1,0 -5: l %r14,7f-5b(%r1) - la %r5,40(%r12) # pointer to struct La_s390_32_retval - bas %r14,0(%r14,%r1) # call _dl_call_pltexit - - lr %r15,%r12 # remove stack frame - cfi_def_cfa_register (15) - l %r14,16(%r15) # restore registers - l %r12,12(%r15) - lm %r2,%r3,40(%r15) # restore return values - ld %f0,48(%r15) -#ifdef RESTORE_VRS - .machine push - .machine "z13" - vl %v24,56(%r15) # restore return value v24 - .machine pop -#endif - br %r14 - -6: .long _dl_profile_fixup - 0b -7: .long _dl_call_pltexit - 5b - cfi_endproc - .size _dl_runtime_profile, .-_dl_runtime_profile -#endif |