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223 lines
4.7 KiB
ArmAsm
223 lines
4.7 KiB
ArmAsm
/* PLT trampolines. m68k version.
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Copyright (C) 2005-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#if !defined (__mcoldfire__)
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# define FMOVE fmove.x
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# define FPSPACE 12
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#elif defined (__mcffpu__)
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# define FMOVE fmove.d
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# define FPSPACE 8
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#else
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# define FPSPACE 0
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#endif
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.text
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.globl _dl_runtime_resolve
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.type _dl_runtime_resolve, @function
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_dl_runtime_resolve:
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cfi_startproc
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cfi_adjust_cfa_offset (8)
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| Save %a0 (struct return address) and %a1.
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move.l %a0, -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l %a1, -(%sp)
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cfi_adjust_cfa_offset (4)
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| Call the real address resolver.
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jbsr _dl_fixup
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| Restore register %a0 and %a1.
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move.l (%sp)+, %a1
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cfi_adjust_cfa_offset (-4)
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move.l (%sp)+, %a0
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cfi_adjust_cfa_offset (-4)
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| Pop parameters
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addq.l #8, %sp
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cfi_adjust_cfa_offset (-8)
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| Call real function.
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#ifdef __mcoldfire__
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move.l %d0,-(%sp)
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cfi_adjust_cfa_offset (4)
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rts
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#else
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jmp (%d0)
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#endif
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cfi_endproc
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.size _dl_runtime_resolve, . - _dl_runtime_resolve
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.text
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.globl _dl_runtime_profile
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.type _dl_runtime_profile, @function
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_dl_runtime_profile:
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cfi_startproc
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cfi_adjust_cfa_offset (8)
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pea 8(%sp)
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cfi_adjust_cfa_offset (4)
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move.l %a1, -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l %a0, -(%sp)
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cfi_adjust_cfa_offset (4)
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pea -1.w
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cfi_adjust_cfa_offset (4)
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| Push parameters for _dl_profile_fixup
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pea (%sp)
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cfi_adjust_cfa_offset (4)
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pea 8(%sp)
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cfi_adjust_cfa_offset (4)
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move.l 32(%sp), -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l 32(%sp), -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l 32(%sp), -(%sp)
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cfi_adjust_cfa_offset (4)
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subq.l #8, %sp
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cfi_adjust_cfa_offset (8)
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| Call the real address resolver.
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jbsr _dl_profile_fixup
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| Pop parameters
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lea 28(%sp), %sp
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cfi_adjust_cfa_offset (-28)
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move.l (%sp), %d1
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jpl 1f
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addq.l #4, %sp
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cfi_adjust_cfa_offset (-4)
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| Restore register %a0 and %a1.
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move.l (%sp)+, %a0
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cfi_adjust_cfa_offset (-4)
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move.l (%sp)+, %a1
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cfi_adjust_cfa_offset (-4)
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lea 12(%sp), %sp
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cfi_adjust_cfa_offset (-12)
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| Call real function.
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#ifdef __mcoldfire__
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move.l %d0,-(%sp)
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cfi_adjust_cfa_offset (4)
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rts
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#else
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jmp (%d0)
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#endif
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/*
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+24 return address
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+20 PLT1
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+16 PLT2
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+12 %sp
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+8 %a1
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+4 %a0
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%sp free
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*/
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#ifdef __mcoldfire__
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cfi_adjust_cfa_offset (20)
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#else
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cfi_adjust_cfa_offset (24)
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#endif
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1: move.l %a2, (%sp)
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cfi_rel_offset (%a2, 0)
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move.l %sp, %a2
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move.l %sp, %a0
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lea 28(%sp), %a1
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| Round framesize up to longword alignment
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addq.l #3, %d1
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and.l #-3, %d1
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sub.l %d1, %a0
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move.l %a0, %sp
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cfi_def_cfa_register (%a2)
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#ifdef __mcoldfire__
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tst.l %d1
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beq 2f
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1: move.l (%a1)+, (%a0)+
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subq.l #4,%d1
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bne 1b
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2:
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#else
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lsr.l #2,%d1
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jra 2f
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1: move.l (%a1)+, (%a0)+
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2: dbra %d1,1b
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#endif
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/*
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%a2+24 return address
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%a2+20 PLT1
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%a2+16 PLT2
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%a2+12 %sp
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%a2+8 %a1
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%a2+4 %a0
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%a2 %a2
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%sp copied stack frame
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*/
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move.l 4(%a2), %a0
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move.l 8(%a2), %a1
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#ifdef __mcoldfire__
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pea 2f(%pc)
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move.l %d0,-(%sp)
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rts
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2:
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#else
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jsr (%d0)
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#endif
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move.l %a2, %sp
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cfi_def_cfa_register (%sp)
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move.l (%sp)+, %a2
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cfi_adjust_cfa_offset (4)
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cfi_restore (%a2)
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/*
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+20 return address
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+16 PLT1
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+12 PLT2
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+8 %sp
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+4 %a1
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%sp %a0
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*/
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#ifdef FMOVE
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FMOVE %fp0, -(%sp)
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cfi_adjust_cfa_offset (FPSPACE)
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#endif
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move.l %a0, -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l %d1, -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l %d0, -(%sp)
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cfi_adjust_cfa_offset (4)
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pea (%sp)
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cfi_adjust_cfa_offset (4)
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pea (16+FPSPACE)(%sp)
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cfi_adjust_cfa_offset (4)
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move.l (32+FPSPACE)(%sp), -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l (32+FPSPACE)(%sp), -(%sp)
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cfi_adjust_cfa_offset (4)
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jbsr _dl_call_pltexit
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lea 16(%sp), %sp
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cfi_adjust_cfa_offset (-16)
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move.l (%sp)+, %d0
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cfi_adjust_cfa_offset (-4)
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move.l (%sp)+, %d1
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cfi_adjust_cfa_offset (-4)
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move.l (%sp)+, %a0
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cfi_adjust_cfa_offset (-4)
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#ifdef FMOVE
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FMOVE (%sp)+, %fp0
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cfi_adjust_cfa_offset (-FPSPACE)
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#endif
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lea 20(%sp), %sp
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cfi_adjust_cfa_offset (-20)
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rts
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cfi_endproc
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.size _dl_runtime_profile, . - _dl_runtime_profile
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