diff options
Diffstat (limited to 'sysdeps/alpha/dl-trampoline.S')
| -rw-r--r-- | sysdeps/alpha/dl-trampoline.S | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/sysdeps/alpha/dl-trampoline.S b/sysdeps/alpha/dl-trampoline.S new file mode 100644 index 0000000000..42350836ef --- /dev/null +++ b/sysdeps/alpha/dl-trampoline.S @@ -0,0 +1,361 @@ +/* PLT trampolines. Alpha 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> + + .set noat + + .globl _dl_runtime_resolve + .ent _dl_runtime_resolve + +#undef FRAMESIZE +#define FRAMESIZE 44*8 + +_dl_runtime_resolve: + lda $30, -FRAMESIZE($30) + .frame $30, FRAMESIZE, $26 + /* Preserve all registers that C normally doesn't. */ + stq $26, 0*8($30) + stq $0, 1*8($30) + stq $1, 2*8($30) + stq $2, 3*8($30) + stq $3, 4*8($30) + stq $4, 5*8($30) + stq $5, 6*8($30) + stq $6, 7*8($30) + stq $7, 8*8($30) + stq $8, 9*8($30) + stq $16, 10*8($30) + stq $17, 11*8($30) + stq $18, 12*8($30) + stq $19, 13*8($30) + stq $20, 14*8($30) + stq $21, 15*8($30) + stq $22, 16*8($30) + stq $23, 17*8($30) + stq $24, 18*8($30) + stq $25, 19*8($30) + stq $29, 20*8($30) + stt $f0, 21*8($30) + stt $f1, 22*8($30) + stt $f10, 23*8($30) + stt $f11, 24*8($30) + stt $f12, 25*8($30) + stt $f13, 26*8($30) + stt $f14, 27*8($30) + stt $f15, 28*8($30) + stt $f16, 29*8($30) + stt $f17, 30*8($30) + stt $f18, 31*8($30) + stt $f19, 32*8($30) + stt $f20, 33*8($30) + stt $f21, 34*8($30) + stt $f22, 35*8($30) + stt $f23, 36*8($30) + stt $f24, 37*8($30) + stt $f25, 38*8($30) + stt $f26, 39*8($30) + stt $f27, 40*8($30) + stt $f28, 41*8($30) + stt $f29, 42*8($30) + stt $f30, 43*8($30) + .mask 0x27ff01ff, -FRAMESIZE + .fmask 0xfffffc03, -FRAMESIZE+21*8 + /* Set up our GP. */ + br $29, .+4 + ldgp $29, 0($29) + .prologue 0 + /* Set up the arguments for _dl_fixup: + $16 = link_map out of plt0 + $17 = offset of reloc entry = ($28 - $27 - 20) /12 * 24 + $18 = return address + */ + subq $28, $27, $17 + ldq $16, 8($27) + subq $17, 20, $17 + mov $26, $18 + addq $17, $17, $17 + bsr $26, _dl_fixup !samegp + + /* Move the destination address into position. */ + mov $0, $27 + /* Restore program registers. */ + ldq $26, 0*8($30) + ldq $0, 1*8($30) + ldq $1, 2*8($30) + ldq $2, 3*8($30) + ldq $3, 4*8($30) + ldq $4, 5*8($30) + ldq $5, 6*8($30) + ldq $6, 7*8($30) + ldq $7, 8*8($30) + ldq $8, 9*8($30) + ldq $16, 10*8($30) + ldq $17, 11*8($30) + ldq $18, 12*8($30) + ldq $19, 13*8($30) + ldq $20, 14*8($30) + ldq $21, 15*8($30) + ldq $22, 16*8($30) + ldq $23, 17*8($30) + ldq $24, 18*8($30) + ldq $25, 19*8($30) + ldq $29, 20*8($30) + ldt $f0, 21*8($30) + ldt $f1, 22*8($30) + ldt $f10, 23*8($30) + ldt $f11, 24*8($30) + ldt $f12, 25*8($30) + ldt $f13, 26*8($30) + ldt $f14, 27*8($30) + ldt $f15, 28*8($30) + ldt $f16, 29*8($30) + ldt $f17, 30*8($30) + ldt $f18, 31*8($30) + ldt $f19, 32*8($30) + ldt $f20, 33*8($30) + ldt $f21, 34*8($30) + ldt $f22, 35*8($30) + ldt $f23, 36*8($30) + ldt $f24, 37*8($30) + ldt $f25, 38*8($30) + ldt $f26, 39*8($30) + ldt $f27, 40*8($30) + ldt $f28, 41*8($30) + ldt $f29, 42*8($30) + ldt $f30, 43*8($30) + /* Flush the Icache after having modified the .plt code. */ + imb + /* Clean up and turn control to the destination */ + lda $30, FRAMESIZE($30) + jmp $31, ($27) + + .end _dl_runtime_resolve + + .globl _dl_runtime_profile + .usepv _dl_runtime_profile, no + .type _dl_runtime_profile, @function + + /* We save the registers in a different order than desired by + .mask/.fmask, so we have to use explicit cfi directives. */ + cfi_startproc + +.macro savei regno, offset + stq $\regno, \offset($30) + cfi_rel_offset(\regno, \offset) +.endm + +.macro savef regno, offset + stt $f\regno, \offset($30) + cfi_rel_offset(\regno+32, \offset) +.endm + +#undef FRAMESIZE +#define FRAMESIZE 50*8 + +_dl_runtime_profile: + lda $30, -FRAMESIZE($30) + cfi_adjust_cfa_offset (FRAMESIZE) + + /* Preserve all argument registers. This also constructs the + La_alpha_regs structure. */ + savei 26, 0*8 + savei 16, 2*8 + savei 17, 3*8 + savei 18, 4*8 + savei 19, 5*8 + savei 20, 6*8 + savei 21, 7*8 + lda $16, FRAMESIZE($30) + savef 16, 8*8 + savef 17, 9*8 + savef 18, 10*8 + savef 19, 11*8 + savef 20, 12*8 + savef 21, 13*8 + stq $16, 1*8($30) + + /* Preserve all registers that C normally doesn't. */ + savei 0, 14*8 + savei 1, 15*8 + savei 2, 16*8 + savei 3, 17*8 + savei 4, 18*8 + savei 5, 19*8 + savei 6, 20*8 + savei 7, 21*8 + savei 8, 22*8 + savei 22, 23*8 + savei 23, 24*8 + savei 24, 25*8 + savei 25, 26*8 + savei 29, 27*8 + savef 0, 28*8 + savef 1, 29*8 + savef 10, 30*8 + savef 11, 31*8 + savef 12, 32*8 + savef 13, 33*8 + savef 14, 34*8 + savef 15, 35*8 + savef 22, 36*8 + savef 23, 37*8 + savef 24, 38*8 + savef 25, 39*8 + savef 26, 40*8 + savef 27, 41*8 + savef 28, 42*8 + savef 29, 43*8 + savef 30, 44*8 + + /* Set up our GP. */ + br $29, .+4 + ldgp $29, 0($29) + + /* Set up the arguments for _dl_profile_fixup: + $16 = link_map out of plt0 + $17 = offset of reloc entry = ($28 - $27 - 20) /12 * 24 + $18 = return address + $19 = La_alpha_regs address + $20 = framesize address + */ + subq $28, $27, $17 + ldq $16, 8($27) + subq $17, 20, $17 + mov $26, $18 + addq $17, $17, $17 + lda $19, 0($30) + lda $20, 45*8($30) + stq $16, 48*8($30) + stq $17, 49*8($30) + + bsr $26, _dl_profile_fixup !samegp + + /* Discover if we're wrapping this call. */ + ldq $18, 45*8($30) + bge $18, 1f + + /* Move the destination address into position. */ + mov $0, $27 + /* Restore program registers. */ + ldq $26, 0*8($30) + ldq $16, 2*8($30) + ldq $17, 3*8($30) + ldq $18, 4*8($30) + ldq $19, 5*8($30) + ldq $20, 6*8($30) + ldq $21, 7*8($30) + ldt $f16, 8*8($30) + ldt $f17, 9*8($30) + ldt $f18, 10*8($30) + ldt $f19, 11*8($30) + ldt $f20, 12*8($30) + ldt $f21, 13*8($30) + ldq $0, 14*8($30) + ldq $1, 15*8($30) + ldq $2, 16*8($30) + ldq $3, 17*8($30) + ldq $4, 18*8($30) + ldq $5, 19*8($30) + ldq $6, 20*8($30) + ldq $7, 21*8($30) + ldq $8, 22*8($30) + ldq $22, 23*8($30) + ldq $23, 24*8($30) + ldq $24, 25*8($30) + ldq $25, 26*8($30) + ldq $29, 27*8($30) + ldt $f0, 28*8($30) + ldt $f1, 29*8($30) + ldt $f10, 30*8($30) + ldt $f11, 31*8($30) + ldt $f12, 32*8($30) + ldt $f13, 33*8($30) + ldt $f14, 34*8($30) + ldt $f15, 35*8($30) + ldt $f22, 36*8($30) + ldt $f23, 37*8($30) + ldt $f24, 38*8($30) + ldt $f25, 39*8($30) + ldt $f26, 40*8($30) + ldt $f27, 41*8($30) + ldt $f28, 42*8($30) + ldt $f29, 43*8($30) + ldt $f30, 44*8($30) + + /* Clean up and turn control to the destination. */ + lda $30, FRAMESIZE($30) + jmp $31, ($27) + +1: + /* Create a frame pointer and allocate a new argument frame. */ + savei 15, 45*8 + mov $30, $15 + cfi_def_cfa_register (15) + addq $18, 15, $18 + bic $18, 15, $18 + subq $30, $18, $30 + + /* Save the call destination around memcpy. */ + stq $0, 46*8($30) + + /* Copy the stack arguments into place. */ + lda $16, 0($30) + lda $17, FRAMESIZE($15) + jsr $26, memcpy + ldgp $29, 0($26) + + /* Reload the argument registers. */ + ldq $27, 46*8($30) + ldq $16, 2*8($15) + ldq $17, 3*8($15) + ldq $18, 4*8($15) + ldq $19, 5*8($15) + ldq $20, 6*8($15) + ldq $21, 7*8($15) + ldt $f16, 8*8($15) + ldt $f17, 9*8($15) + ldt $f18, 10*8($15) + ldt $f19, 11*8($15) + ldt $f20, 12*8($15) + ldt $f21, 13*8($15) + + jsr $26, ($27), 0 + ldgp $29, 0($26) + + /* Set up for call to _dl_call_pltexit. */ + ldq $16, 48($15) + ldq $17, 49($15) + stq $0, 46*8($15) + lda $18, 0($15) + stq $1, 47*8($15) + lda $19, 46*8($15) + stt $f0, 48*8($15) + stt $f1, 49*8($15) + bsr $26, _dl_call_pltexit !samegp + + mov $15, $30 + cfi_def_cfa_register (30) + ldq $26, 0($30) + ldq $15, 45*8($30) + lda $30, FRAMESIZE($30) + ret + + cfi_endproc + .size _dl_runtime_profile, .-_dl_runtime_profile |