mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 13:30:06 +00:00
541 lines
11 KiB
ArmAsm
541 lines
11 KiB
ArmAsm
/* PLT trampolines. Alpha 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>
|
|
|
|
.set noat
|
|
|
|
.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
|
|
|
|
.align 4
|
|
.globl _dl_runtime_resolve_new
|
|
.ent _dl_runtime_resolve_new
|
|
|
|
#undef FRAMESIZE
|
|
#define FRAMESIZE 14*8
|
|
|
|
_dl_runtime_resolve_new:
|
|
.frame $30, FRAMESIZE, $26, 0
|
|
.mask 0x4000000, 0
|
|
|
|
ldah $29, 0($27) !gpdisp!1
|
|
lda $30, -FRAMESIZE($30)
|
|
stq $26, 0*8($30)
|
|
stq $16, 2*8($30)
|
|
|
|
stq $17, 3*8($30)
|
|
lda $29, 0($29) !gpdisp!1
|
|
stq $18, 4*8($30)
|
|
mov $28, $16 /* link_map from .got.plt */
|
|
|
|
stq $19, 5*8($30)
|
|
mov $25, $17 /* offset of reloc entry */
|
|
stq $20, 6*8($30)
|
|
mov $26, $18 /* return address */
|
|
|
|
stq $21, 7*8($30)
|
|
stt $f16, 8*8($30)
|
|
stt $f17, 9*8($30)
|
|
stt $f18, 10*8($30)
|
|
|
|
stt $f19, 11*8($30)
|
|
stt $f20, 12*8($30)
|
|
stt $f21, 13*8($30)
|
|
.prologue 2
|
|
|
|
bsr $26, _dl_fixup !samegp
|
|
mov $0, $27
|
|
|
|
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)
|
|
lda $30, FRAMESIZE($30)
|
|
jmp $31, ($27), 0
|
|
.end _dl_runtime_resolve_new
|
|
|
|
.globl _dl_runtime_profile_new
|
|
.type _dl_runtime_profile_new, @function
|
|
|
|
#undef FRAMESIZE
|
|
#define FRAMESIZE 20*8
|
|
|
|
/* We save the registers in a different order than desired by
|
|
.mask/.fmask, so we have to use explicit cfi directives. */
|
|
cfi_startproc
|
|
|
|
_dl_runtime_profile_new:
|
|
ldah $29, 0($27) !gpdisp!2
|
|
lda $30, -FRAMESIZE($30)
|
|
savei 26, 0*8
|
|
stq $16, 2*8($30)
|
|
|
|
stq $17, 3*8($30)
|
|
lda $29, 0($29) !gpdisp!2
|
|
stq $18, 4*8($30)
|
|
lda $1, FRAMESIZE($30) /* incoming sp value */
|
|
|
|
stq $1, 1*8($30)
|
|
stq $19, 5*8($30)
|
|
stq $20, 6*8($30)
|
|
mov $28, $16 /* link_map from .got.plt */
|
|
|
|
stq $21, 7*8($30)
|
|
mov $25, $17 /* offset of reloc entry */
|
|
stt $f16, 8*8($30)
|
|
mov $26, $18 /* return address */
|
|
|
|
stt $f17, 9*8($30)
|
|
mov $30, $19 /* La_alpha_regs address */
|
|
stt $f18, 10*8($30)
|
|
lda $20, 14*8($30) /* framesize address */
|
|
|
|
stt $f19, 11*8($30)
|
|
stt $f20, 12*8($30)
|
|
stt $f21, 13*8($30)
|
|
stq $28, 16*8($30)
|
|
stq $25, 17*8($30)
|
|
|
|
bsr $26, _dl_profile_fixup !samegp
|
|
mov $0, $27
|
|
|
|
/* Discover if we're wrapping this call. */
|
|
ldq $18, 14*8($30)
|
|
bge $18, 1f
|
|
|
|
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)
|
|
lda $30, FRAMESIZE($30)
|
|
jmp $31, ($27), 0
|
|
|
|
1:
|
|
/* Create a frame pointer and allocate a new argument frame. */
|
|
savei 15, 15*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, 14*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, 14*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, 16*8($15)
|
|
ldq $17, 17*8($15)
|
|
stq $0, 16*8($15)
|
|
lda $18, 0($15)
|
|
stq $1, 17*8($15)
|
|
lda $19, 16*8($15)
|
|
stt $f0, 18*8($15)
|
|
stt $f1, 19*8($15)
|
|
bsr $26, _dl_call_pltexit !samegp
|
|
|
|
mov $15, $30
|
|
cfi_def_cfa_register (30)
|
|
ldq $26, 0($30)
|
|
ldq $15, 15*8($30)
|
|
lda $30, FRAMESIZE($30)
|
|
ret
|
|
|
|
cfi_endproc
|
|
.size _dl_runtime_profile_new, .-_dl_runtime_profile_new
|
|
|
|
.align 4
|
|
.globl _dl_runtime_resolve_old
|
|
.ent _dl_runtime_resolve_old
|
|
|
|
#undef FRAMESIZE
|
|
#define FRAMESIZE 44*8
|
|
|
|
_dl_runtime_resolve_old:
|
|
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_old
|
|
|
|
.globl _dl_runtime_profile_old
|
|
.usepv _dl_runtime_profile_old, no
|
|
.type _dl_runtime_profile_old, @function
|
|
|
|
/* We save the registers in a different order than desired by
|
|
.mask/.fmask, so we have to use explicit cfi directives. */
|
|
cfi_startproc
|
|
|
|
#undef FRAMESIZE
|
|
#define FRAMESIZE 50*8
|
|
|
|
.align 4
|
|
_dl_runtime_profile_old:
|
|
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*8($15)
|
|
ldq $17, 49*8($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_old, .-_dl_runtime_profile_old
|