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|
/* 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
|
