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Diffstat (limited to 'sysdeps/hppa/dl-trampoline.S')
| -rw-r--r-- | sysdeps/hppa/dl-trampoline.S | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/sysdeps/hppa/dl-trampoline.S b/sysdeps/hppa/dl-trampoline.S deleted file mode 100644 index 856339bffe..0000000000 --- a/sysdeps/hppa/dl-trampoline.S +++ /dev/null @@ -1,287 +0,0 @@ -/* PLT trampolines. hppa version. - Copyright (C) 2005-2017 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/>. */ - -#include <sysdep.h> - -/* This code gets called via the .plt stub, and is used in - dl-runtime.c to call the `_dl_fixup' function and then redirect - to the address it returns. `_dl_fixup' takes two arguments, however - `_dl_profile_fixup' takes a number of parameters for use with - library auditing (LA). - - WARNING: This template is also used by gcc's __cffc, and expects - that the "bl" for _dl_runtime_resolve exist at a particular offset. - Do not change this template without changing gcc, while the prefix - "bl" should fix everything so gcc finds the right spot, it will - slow down __cffc when it attempts to call fixup to resolve function - descriptor references. Please refer to gcc/gcc/config/pa/fptr.c - - Enter with r19 = reloc offset, r20 = got-8, r21 = fixup ltp. */ - - /* RELOCATION MARKER: bl to provide gcc's __cffc with fixup loc. */ - .text - /* THIS CODE DOES NOT EXECUTE */ - bl _dl_fixup, %r2 - .text - .global _dl_runtime_resolve - .type _dl_runtime_resolve,@function - cfi_startproc - .align 4 -_dl_runtime_resolve: - .PROC - .CALLINFO FRAME=128,CALLS,SAVE_RP,ENTRY_GR=3 - .ENTRY - /* SAVE_RP says we do */ - stw %rp, -20(%sp) - - /* Save static link register */ - stw %r29,-16(%sp) - /* Save argument registers */ - stw %r26,-36(%sp) - stw %r25,-40(%sp) - stw %r24,-44(%sp) - stw %r23,-48(%sp) - - /* Build a call frame, and save structure pointer. */ - copy %sp, %r1 /* Copy previous sp */ - /* Save function result address (on entry) */ - stwm %r28,128(%sp) - /* Fillin some frame info to follow ABI */ - stw %r1,-4(%sp) /* Previous sp */ - stw %r21,-32(%sp) /* PIC register value */ - - /* Save input floating point registers. This must be done - in the new frame since the previous frame doesn't have - enough space */ - ldo -56(%sp),%r1 - fstd,ma %fr4,-8(%r1) - fstd,ma %fr5,-8(%r1) - fstd,ma %fr6,-8(%r1) - fstd,ma %fr7,-8(%r1) - - /* Set up args to fixup func, needs only two arguments */ - ldw 8+4(%r20),%r26 /* (1) got[1] == struct link_map */ - copy %r19,%r25 /* (2) reloc offset */ - - /* Call the real address resolver. */ - bl _dl_fixup,%rp - copy %r21,%r19 /* set fixup func ltp */ - - /* Load up the returned func descriptor */ - copy %r28, %r22 - copy %r29, %r19 - - /* Reload arguments fp args */ - ldo -56(%sp),%r1 - fldd,ma -8(%r1),%fr4 - fldd,ma -8(%r1),%fr5 - fldd,ma -8(%r1),%fr6 - fldd,ma -8(%r1),%fr7 - - /* Adjust sp, and restore function result address*/ - ldwm -128(%sp),%r28 - - /* Reload static link register */ - ldw -16(%sp),%r29 - /* Reload general args */ - ldw -36(%sp),%r26 - ldw -40(%sp),%r25 - ldw -44(%sp),%r24 - ldw -48(%sp),%r23 - - /* Jump to new function, but return to previous function */ - bv %r0(%r22) - ldw -20(%sp),%rp - .EXIT - .PROCEND - cfi_endproc - .size _dl_runtime_resolve, . - _dl_runtime_resolve - - .text - .global _dl_runtime_profile - .type _dl_runtime_profile,@function - cfi_startproc - .align 4 -_dl_runtime_profile: - .PROC - .CALLINFO FRAME=192,CALLS,SAVE_RP,ENTRY_GR=3 - .ENTRY - - /* SAVE_RP says we do */ - stw %rp, -20(%sp) - /* Save static link register */ - stw %r29,-16(%sp) - - /* Build a call frame, and save structure pointer. */ - copy %sp, %r1 /* Copy previous sp */ - /* Save function result address (on entry) */ - stwm %r28,192(%sp) - /* Fillin some frame info to follow ABI */ - stw %r1,-4(%sp) /* Previous sp */ - stw %r21,-32(%sp) /* PIC register value */ - - /* Create La_hppa_retval */ - /* -140, lrv_r28 - -136, lrv_r29 - -132, 4 byte pad - -128, lr_fr4 (8 bytes) */ - - /* Create save space for _dl_profile_fixup arguments - -120, Saved reloc offset - -116, Saved struct link_map - -112, *framesizep */ - - /* Create La_hppa_regs */ - /* 32-bit registers */ - stw %r26,-108(%sp) - stw %r25,-104(%sp) - stw %r24,-100(%sp) - stw %r23,-96(%sp) - /* -92, 4 byte pad */ - /* 64-bit floating point registers */ - ldo -88(%sp),%r1 - fstd,ma %fr4,8(%r1) - fstd,ma %fr5,8(%r1) - fstd,ma %fr6,8(%r1) - fstd,ma %fr7,8(%r1) - /* 32-bit stack pointer and return register */ - stw %sp,-56(%sp) - stw %r2,-52(%sp) - - - /* Set up args to fixup func, needs five arguments */ - ldw 8+4(%r20),%r26 /* (1) got[1] == struct link_map */ - stw %r26,-116(%sp) /* Save struct link_map */ - copy %r19,%r25 /* (2) reloc offset */ - stw %r25,-120(%sp) /* Save reloc offset */ - copy %rp,%r24 /* (3) profile_fixup needs rp */ - ldo -56(%sp),%r23 /* (4) La_hppa_regs */ - ldo -112(%sp), %r1 - stw %r1, -52(%sp) /* (5) long int *framesizep */ - - /* Call the real address resolver. */ - bl _dl_profile_fixup,%rp - copy %r21,%r19 /* set fixup func ltp */ - - /* Load up the returned function descriptor */ - copy %r28, %r22 - copy %r29, %r19 - - /* Restore gr/fr/sp/rp */ - ldw -108(%sp),%r26 - ldw -104(%sp),%r25 - ldw -100(%sp),%r24 - ldw -96(%sp),%r23 - /* -92, 4 byte pad, skip */ - ldo -88(%sp),%r1 - fldd,ma 8(%r1),%fr4 - fldd,ma 8(%r1),%fr5 - fldd,ma 8(%r1),%fr6 - fldd,ma 8(%r1),%fr7 - ldw -52(%sp),%rp - - /* Reload static link register -(192+16) without adjusting stack */ - ldw -208(%sp),%r29 - - /* *framesizep is >= 0 if we have to run pltexit */ - ldw -112(%sp),%r28 - cmpb,>>=,N %r0,%r28,L(cpe) - - /* Adjust sp, and restore function result address*/ - ldwm -192(%sp),%r28 - /* Jump to new function, but return to previous function */ - bv %r0(%r22) - ldw -20(%sp),%rp - /* NO RETURN */ - -L(nf): - /* Call the returned function descriptor */ - bv %r0(%r22) - nop - b,n L(cont) - -L(cpe): - /* We are going to call the resolved function, but we have a - stack frame in the middle. We use the value of framesize to - guess how much extra frame we need, and how much frame to - copy forward. */ - - /* Round to nearest multiple of 64 */ - addi 63, %r28, %r28 - depi 0, 27, 6, %r28 - - /* Calcualte start of stack copy */ - ldo -192(%sp),%r2 - - /* Increate the stack by *framesizep */ - copy %sp, %r1 - add %sp, %r28, %sp - /* Save stack pointer */ - stw %r1, -4(%sp) - - /* Single byte copy of prevous stack onto newly allocated stack */ -1: ldb %r28(%r2), %r1 - add %r28, %sp, %r26 - stb %r1, 0(%r26) - addi,< -1,%r28,%r28 - b,n 1b - - /* Retore r28 and r27 and r2 already points at -192(%sp) */ - ldw 0(%r2),%r28 - ldw 84(%r2),%r26 - - /* Calculate address of L(cont) */ - b,l L(nf),%r2 - depwi 0,31,2,%r2 -L(cont): - /* Undo fake stack */ - ldw -4(%sp),%r1 - copy %r1, %sp - - /* Arguments to _dl_call_pltexit */ - ldw -116(%sp), %r26 /* (1) got[1] == struct link_map */ - ldw -120(%sp), %r25 /* (2) reloc offsets */ - ldo -56(%sp), %r24 /* (3) *La_hppa_regs */ - ldo -124(%sp), %r23 /* (4) *La_hppa_retval */ - - /* Fill *La_hppa_retval */ - stw %r28,-140(%sp) - stw %r29,-136(%sp) - ldo -128(%sp), %r1 - fstd %fr4,0(%r1) - - /* Call _dl_call_pltexit */ - bl _dl_call_pltexit,%rp - nop - - /* Restore *La_hppa_retval */ - ldw -140(%sp), %r28 - ldw -136(%sp), %r29 - ldo -128(%sp), %r1 - fldd 0(%r1), %fr4 - - /* Unwind the stack */ - ldo 192(%sp),%sp - /* Retore callers rp */ - ldw -20(%sp),%rp - /* Return */ - bv,n 0(%r2) - .EXIT - .PROCEND - cfi_endproc - .size _dl_runtime_profile, . - _dl_runtime_profile |