diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/alpha/makecontext.S')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/alpha/makecontext.S | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/alpha/makecontext.S b/ports/sysdeps/unix/sysv/linux/alpha/makecontext.S deleted file mode 100644 index 40ffd2089d..0000000000 --- a/ports/sysdeps/unix/sysv/linux/alpha/makecontext.S +++ /dev/null @@ -1,163 +0,0 @@ -/* Copyright (C) 2004-2014 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> -#include <ucontext-offsets.h> - - -ENTRY(__makecontext) - ldgp $29, 0($27) -#ifdef PROF - .set noat - lda AT, _mcount - jsr AT, (AT), _mcount - .set at -#endif - .prologue 1 - - /* Compute top of stack, including arguments. */ - ldq $1, UC_STACK+SS_SP($16) - ldq $2, UC_STACK+SS_SIZE($16) - addq $1, $2, $8 - subq $18, 6, $1 - cmovlt $1, 0, $1 - s8addq $1, 0, $2 - subq $8, $2, $8 - - /* Copy all parameters. Switch statement header here. */ - ldah $3, $jumptable($29) !gprelhigh - cmple $18, 6, $1 - mov $18, $2 - cmoveq $1, 7, $2 - s4addq $2, $3, $3 - ldl $4, $jumptable($3) !gprellow - addq $4, $29, $4 - jmp $31, ($4), $args1 - - .section .rodata - .align 2 -$jumptable: - .gprel32 $args0 - .gprel32 $args1 - .gprel32 $args2 - .gprel32 $args3 - .gprel32 $args4 - .gprel32 $args5 - .gprel32 $args6 - .gprel32 $argsN - .text - - /* Here we process arguments 7 through N. This is a straight - stack-to-stack copy. */ - .align 4 -$argsN: - subq $18, 6, $1 - lda $2, 0($8) - lda $3, 3*8($30) - .align 4 -1: - ldq $0, 0($3) - subq $1, 1, $1 - lda $3, 8($3) - stq $0, 0($2) - lda $2, 8($2) - bne $1, 1b - - /* Here we process arguments 6 through 0. This involves - copying into the register save areas of the ucontext. */ - .align 4 -$args6: - ldq $0, 2*8($30) - stq $0, UC_SIGCTX+SC_REGS+21*8($16) - unop - stq $0, UC_SIGCTX+SC_FPREGS+21*8($16) -$args5: - ldq $0, 1*8($30) - stq $0, UC_SIGCTX+SC_REGS+20*8($16) - unop - stq $0, UC_SIGCTX+SC_FPREGS+20*8($16) -$args4: - ldq $0, 0*8($30) - stq $0, UC_SIGCTX+SC_REGS+19*8($16) - unop - stq $0, UC_SIGCTX+SC_FPREGS+19*8($16) -$args3: - unop - stq $21, UC_SIGCTX+SC_REGS+18*8($16) - unop - stt $f21, UC_SIGCTX+SC_FPREGS+18*8($16) -$args2: - unop - stq $20, UC_SIGCTX+SC_REGS+17*8($16) - unop - stt $f20, UC_SIGCTX+SC_FPREGS+17*8($16) -$args1: - unop - stq $19, UC_SIGCTX+SC_REGS+16*8($16) - unop - stt $f19, UC_SIGCTX+SC_FPREGS+16*8($16) -$args0: - - /* Set up the registers ready to invoke __startcontext. - We seed $27 with the target function address, and $9 - with the link from ucp. */ - ldah $0, __startcontext($29) !gprelhigh - ldq $1, UC_LINK($16) - lda $0, __startcontext($0) !gprellow - stq $17, UC_SIGCTX+SC_REGS+27*8($16) - stq $8, UC_SIGCTX+SC_REGS+30*8($16) - stq $0, UC_SIGCTX+SC_PC($16) - stq $1, UC_SIGCTX+SC_REGS+9*8($16) - - /* No return value from makecontext. */ - ret - -END(__makecontext) -weak_alias (__makecontext, makecontext) - -/* This function is where a new makecontext "thread" begins life. - We have already set up $27 for calling the target function, and - we've set $9 to the UC_LINK of the parent context. - - If the function returns, we either jump to the linked context - (if non-null) or exit. */ - - .align 4 - .ent __startcontext -__startcontext: - .frame $31, 0, $31, 0 - .prologue 0 - - jsr $26, ($27), 0 - ldgp $29, 0($26) - mov $9, $16 - beq $9, 1f - -#ifdef PIC - bsr $26, __setcontext !samegp -1: mov $31, $16 - bsr $26, HIDDEN_JUMPTARGET(exit) !samegp -#else - jsr $26, __setcontext - ldgp $29, 0($26) -1: mov $31, $16 - jsr $26, HIDDEN_JUMPTARGET(exit) -#endif - - halt - - .end __startcontext |