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* sysdeps/unix/sysv/linux/sh/makecontext.S: New file. 

* sysdeps/unix/sysv/linux/sh/sh3/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/sh/sh4/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/sh/sh3/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/sh/sh4/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/sh/sh3/swapcontext.S: New file.
	* sysdeps/unix/sysv/linux/sh/sh4/swapcontext.S: New file.
	* sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.h: New file.
	* sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.h: New file.
	* sysdeps/unix/sysv/linux/sh/sys/ucontext.h: Removed.
	* sysdeps/unix/sysv/linux/sh/sh3/sys/ucontext.h: New file.
	* sysdeps/unix/sysv/linux/sh/sh4/sys/ucontext.h: New file.
This commit is contained in:
Ulrich Drepper 2005-10-16 15:49:27 +00:00
parent f53d5aff8a
commit 76e95c8899
12 changed files with 1314 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
ChangeLog
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@ -1,3 +1,18 @@
2005-10-16 Kaz Kojima <kkojima@rr.iij4u.or.jp>
* sysdeps/unix/sysv/linux/sh/makecontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh3/getcontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh4/getcontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh3/setcontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh4/setcontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh3/swapcontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh4/swapcontext.S: New file.
* sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.h: New file.
* sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.h: New file.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h: Removed.
* sysdeps/unix/sysv/linux/sh/sh3/sys/ucontext.h: New file.
* sysdeps/unix/sysv/linux/sh/sh4/sys/ucontext.h: New file.
2005-09-13 Jakub Jelinek <jakub@redhat.com>
[BZ #1228]

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sysdeps/unix/sysv/linux/sh/makecontext.S Normal file
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/* Create new context.
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>
#include "ucontext_i.h"
/* void __makecontext (struct ucontext *ucp, void (*func)(), int argc, ...);
__makecontext sets up a stack and registers for context to run a given
function. The registers are set up like this:
r4-r7: parameters 1 to 4
r8 : uc_link from ucontext structure
pc : (*func) pointer
pr : address of exitcode
r15 : stack pointer for func. */
.text
.align 5
cfi_startproc
ENTRY(__makecontext)
mov #4, r3
mov.l @(oSS_SP,r4), r1
mov.l @(oSS_SIZE,r4), r2
add r1, r2
cmp/gt r6, r3
bf/s 1f
shlr2 r2
sub r6, r2
add r3, r2
1:
shll2 r2
mov #oR15, r0
mov.l @(oLINK,r4), r1
mov.l r2, @(r0,r4)
mov.l r1, @(oR8,r4)
mov #oPC, r0
mov.l r5, @(r0,r4)
cmp/pl r6
bf/s .L1
dt r6
mov.l r7, @(oR4,r4)
cmp/pl r6
bf/s .L1
dt r6
mov.l @(0,r15), r1
mov.l r1, @(oR5,r4)
cmp/pl r6
bf/s .L1
dt r6
mov.l @(4,r15), r1
mov.l r1, @(oR6,r4)
cmp/pl r6
bf/s .L1
dt r6
mov.l @(8,r15), r1
mov.l r1, @(oR7,r4)
mov #12,r0
.L0:
cmp/pl r6
bf/s .L1
dt r6
mov.l @(r0,r15), r1
mov.l r1, @r2
add #4, r0
bra .L0
add #4, r2
.L1:
#ifdef PIC
mova .Lexitcode, r0
#else
mov.l .L2, r0
#endif
add #oPR, r4
rts
mov.l r0, @r4
#ifndef PIC
.align 2
.L2:
.long .Lexitcode
#endif
cfi_endproc
.align 5
.Lexitcode:
tst r8, r8
bt/s 2f
mov r8, r4
#ifdef PIC
mova .Lgot, r0
mov.l .Lgot, r12
add r0, r12
mov.l .L3, r1
bsrf r1
.LPCS0:
nop
#else
mov.l .L3, r1
jsr @r1
nop
#endif
2:
mov.l .L4, r1
#ifdef PIC
add r12, r1
#endif
jsr @r1
mov r0, r4
0:
bra 0b
nop
.align 2
#ifdef PIC
.Lgot:
.long _GLOBAL_OFFSET_TABLE_
.L3:
.long __setcontext@PLT-(.LPCS0+2-(.))
.L4:
.long HIDDEN_JUMPTARGET(exit)@GOTOFF
#else
.L3:
.long __setcontext
.L4:
.long HIDDEN_JUMPTARGET(exit)
#endif
PSEUDO_END(__makecontext)
weak_alias (__makecontext, makecontext)

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sysdeps/unix/sysv/linux/sh/sh3/getcontext.S Normal file
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/* Save current context.
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>
#include "ucontext_i.h"
/* int __getcontext (ucontext_t *uc); */
.text
.align 5
cfi_startproc
ENTRY(__getcontext)
/* Return value of getcontext. R0 is the only register whose
value is not preserved. */
mov #0, r0
mov.l r0, @(oR0,r4)
mov.l r1, @(oR1,r4)
mov.l r2, @(oR2,r4)
mov.l r3, @(oR3,r4)
mov.l r4, @(oR4,r4)
mov.l r5, @(oR5,r4)
mov.l r6, @(oR6,r4)
mov.l r7, @(oR7,r4)
mov r4, r0
add #(oMACL+4), r0
sts.l macl, @-r0
sts.l mach, @-r0
stc.l gbr, @-r0
/* Save T flag to SR. */
movt r1
mov.l r1, @-r0
sts.l pr, @-r0
/* The return address of getcontext is the restart pc. */
sts.l pr, @-r0
mov.l r15, @-r0
mov.l r14, @-r0
mov.l r13, @-r0
mov.l r12, @-r0
mov.l r11, @-r0
mov.l r10, @-r0
mov.l r9, @-r0
mov.l r8, @-r0
/* sigprocmask (SIG_BLOCK, NULL, &uc->uc_sigmask). */
mov r4, r6
add #oSIGMASK, r6
mov #SIG_BLOCK, r4
mov #0, r5
mov #+SYS_ify(sigprocmask), r3
trapa #0x13
mov r0, r1
mov #-12, r2
shad r2, r1
not r1, r1 // r1=0 means r0 = -1 to -4095
tst r1, r1 // i.e. error in linux
bf .Lgetcontext_end
.Lsyscall_error:
SYSCALL_ERROR_HANDLER
.Lgetcontext_end:
/* All done, return 0 for success. */
mov #0, r0
.Lpseudo_end:
rts
nop
cfi_endproc
PSEUDO_END(__getcontext)
weak_alias (__getcontext, getcontext)

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sysdeps/unix/sysv/linux/sh/sh3/setcontext.S Normal file
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/* Install given context.
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>
#include "ucontext_i.h"
/* int __setcontext (const ucontext_t *uc); */
.text
.align 5
cfi_startproc
ENTRY(__setcontext)
mov r4, r8
/* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, NULL). */
mov r4, r5
add #oSIGMASK, r5
mov #SIG_SETMASK, r4
mov #0, r6
mov #+SYS_ify(sigprocmask), r3
trapa #0x13
mov r0, r1
mov #-12, r2
shad r2, r1
not r1, r1 // r1=0 means r0 = -1 to -4095
tst r1, r1 // i.e. error in linux
bf .Lsetcontext_restore
.Lsyscall_error:
SYSCALL_ERROR_HANDLER
.Lpseudo_end:
rts
nop
.Lsetcontext_restore:
mov r8, r0
add #(oPC), r0
mov.l @r0+, r2
lds.l @r0+, pr
/* Restore T frag. */
mov.l @r0+, r1
shlr r1
/* Skip GBR which is used for thread pointer. */
add #4, r0
lds.l @r0+, mach
lds.l @r0+, macl
mov r8, r0
add #(oR9), r0
mov.l @r0+, r9
mov.l @r0+, r10
mov.l @r0+, r11
mov.l @r0+, r12
mov.l @r0+, r13
mov.l @r0+, r14
mov.l @r0+, r15
mov r8, r0
mov.l @(oR0,r0), r1
mov.l r1, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r1, 0)
mov.l r2, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r2, 0)
mov.l @(oR1,r0), r1
mov.l @(oR2,r0), r2
mov.l @(oR3,r0), r3
mov.l @(oR4,r0), r4
mov.l @(oR5,r0), r5
mov.l @(oR6,r0), r6
mov.l @(oR7,r0), r7
mov.l @(oR8,r0), r8
mov.l @r15+, r0
jmp @r0
mov.l @r15+, r0
cfi_endproc
PSEUDO_END(__setcontext)
weak_alias (__setcontext, setcontext)

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sysdeps/unix/sysv/linux/sh/sh3/swapcontext.S Normal file
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/* Save current context and install the given one.
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>
#include "ucontext_i.h"
/* int __swapcontext (ucontext_t *ouc, const ucontext_t *uc); */
.text
.align 5
cfi_startproc
ENTRY(__swapcontext)
/* Return value of getcontext. R0 is the only register whose
value is not preserved. */
mov #0, r0
mov.l r0, @(oR0,r4)
mov.l r1, @(oR1,r4)
mov.l r2, @(oR2,r4)
mov.l r3, @(oR3,r4)
mov.l r4, @(oR4,r4)
mov.l r5, @(oR5,r4)
mov.l r6, @(oR6,r4)
mov.l r7, @(oR7,r4)
mov r4, r0
add #(oMACL+4), r0
sts.l macl, @-r0
sts.l mach, @-r0
stc.l gbr, @-r0
/* Save T flag to SR. */
movt r1
mov.l r1, @-r0
sts.l pr, @-r0
/* The return address of getcontext is the restart pc. */
sts.l pr, @-r0
mov.l r15, @-r0
mov.l r14, @-r0
mov.l r13, @-r0
mov.l r12, @-r0
mov.l r11, @-r0
mov.l r10, @-r0
mov.l r9, @-r0
mov.l r8, @-r0
mov r5, r8
/* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, &ouc->uc_sigmask). */
add #oSIGMASK, r5
mov r4, r6
add #oSIGMASK, r6
mov #SIG_SETMASK, r4
mov #+SYS_ify(sigprocmask), r3
trapa #0x13
mov r0, r1
mov #-12, r2
shad r2, r1
not r1, r1 // r1=0 means r0 = -1 to -4095
tst r1, r1 // i.e. error in linux
bf .Lswapcontext_restore
.Lsyscall_error:
SYSCALL_ERROR_HANDLER
.Lpseudo_end:
rts
nop
.Lswapcontext_restore:
mov r8, r0
add #(oPC), r0
mov.l @r0+, r2
lds.l @r0+, pr
/* Restore T frag. */
mov.l @r0+, r1
shlr r1
/* Skip GBR which is used for thread pointer. */
add #4, r0
lds.l @r0+, mach
lds.l @r0+, macl
mov r8, r0
add #(oR9), r0
mov.l @r0+, r9
mov.l @r0+, r10
mov.l @r0+, r11
mov.l @r0+, r12
mov.l @r0+, r13
mov.l @r0+, r14
mov.l @r0+, r15
mov r8, r0
mov.l @(oR0,r0), r1
mov.l r1, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r1, 0)
mov.l r2, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r2, 0)
mov.l @(oR1,r0), r1
mov.l @(oR2,r0), r2
mov.l @(oR3,r0), r3
mov.l @(oR4,r0), r4
mov.l @(oR5,r0), r5
mov.l @(oR6,r0), r6
mov.l @(oR7,r0), r7
mov.l @(oR8,r0), r8
mov.l @r15+, r0
jmp @r0
mov.l @r15+, r0
cfi_endproc
PSEUDO_END(__swapcontext)
weak_alias (__swapcontext, swapcontext)

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sysdeps/unix/sysv/linux/sh/sh3/sys/ucontext.h Normal file
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/* Copyright (C) 1999, 2000, 2001, 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. */
/* Where is System V/SH ABI? */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
#include <features.h>
#include <signal.h>
/* We need the signal context definitions even if they are not used
included in <signal.h>. */
#include <bits/sigcontext.h>
typedef int greg_t;
/* Number of general registers. */
#define NFPREG 16
/* Container for all general registers. */
typedef greg_t gregset_t[NFPREG];
#ifdef __USE_GNU
/* Number of each register is the `gregset_t' array. */
enum
{
R0 = 0,
#define R0 R0
R1 = 1,
#define R1 R1
R2 = 2,
#define R2 R2
R3 = 3,
#define R3 R3
R4 = 4,
#define R4 R4
R5 = 5,
#define R5 R5
R6 = 6,
#define R6 R6
R7 = 7,
#define R7 R7
R8 = 8,
#define R8 R8
R9 = 9,
#define R9 R9
R10 = 10,
#define R10 R10
R11 = 11,
#define R11 R11
R12 = 12,
#define R12 R12
R13 = 13,
#define R13 R13
R14 = 14,
#define R14 R14
R15 = 15,
#define R15 R15
};
#endif
/* Context to describe whole processor state. */
typedef struct
{
unsigned int oldmask;
gregset_t gregs;
unsigned int pc;
unsigned int pr;
unsigned int sr;
unsigned int gbr;
unsigned int mach;
unsigned int macl;
} mcontext_t;
/* Userlevel context. */
typedef struct ucontext
{
unsigned long int uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
mcontext_t uc_mcontext;
__sigset_t uc_sigmask;
} ucontext_t;
#endif /* sys/ucontext.h */

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sysdeps/unix/sysv/linux/sh/sh3/ucontext_i.h Normal file
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/* Offsets and other constants needed in the *context() function
implementation.
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. */
#define SIG_BLOCK 0
#define SIG_SETMASK 2
/* Offsets of the fields in the ucontext_t structure. */
#define oLINK 4
#define oSS_SP 8
#define oSS_SIZE 16
#define oR0 24
#define oR1 28
#define oR2 32
#define oR3 36
#define oR4 40
#define oR5 44
#define oR6 48
#define oR7 52
#define oR8 56
#define oR9 60
#define oR10 64
#define oR11 68
#define oR12 72
#define oR13 76
#define oR14 80
#define oR15 84
#define oPC 88
#define oPR 92
#define oSR 96
#define oGBR 100
#define oMACH 104
#define oMACL 108
#define oSIGMASK 112
/* Tests run in stdlib/tst-ucontext-off. */
#define TESTS \
TEST (uc_link, oLINK); \
TEST (uc_stack.ss_sp, oSS_SP); \
TEST (uc_stack.ss_size, oSS_SIZE); \
TEST (uc_mcontext.gregs[R0], oR0); \
TEST (uc_mcontext.gregs[R1], oR1); \
TEST (uc_mcontext.gregs[R2], oR2); \
TEST (uc_mcontext.gregs[R3], oR3); \
TEST (uc_mcontext.gregs[R4], oR4); \
TEST (uc_mcontext.gregs[R5], oR5); \
TEST (uc_mcontext.gregs[R6], oR6); \
TEST (uc_mcontext.gregs[R7], oR7); \
TEST (uc_mcontext.gregs[R8], oR8); \
TEST (uc_mcontext.gregs[R9], oR9); \
TEST (uc_mcontext.gregs[R10], oR10); \
TEST (uc_mcontext.gregs[R11], oR11); \
TEST (uc_mcontext.gregs[R12], oR12); \
TEST (uc_mcontext.gregs[R13], oR13); \
TEST (uc_mcontext.gregs[R14], oR14); \
TEST (uc_mcontext.gregs[R15], oR15); \
TEST (uc_mcontext.pc, oPC); \
TEST (uc_mcontext.pr, oPR); \
TEST (uc_mcontext.sr, oSR); \
TEST (uc_mcontext.gbr, oGBR); \
TEST (uc_mcontext.mach, oMACH); \
TEST (uc_mcontext.macl, oMACL); \
TEST (uc_sigmask, oSIGMASK);

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sysdeps/unix/sysv/linux/sh/sh4/getcontext.S Normal file
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/* Save current context.
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>
#include "ucontext_i.h"
/* int __getcontext (ucontext_t *uc); */
.text
.align 5
cfi_startproc
ENTRY(__getcontext)
/* Return value of getcontext. R0 is the only register whose
value is not preserved. */
mov #0, r0
mov.l r0, @(oR0,r4)
mov.l r1, @(oR1,r4)
mov.l r2, @(oR2,r4)
mov.l r3, @(oR3,r4)
mov.l r4, @(oR4,r4)
mov.l r5, @(oR5,r4)
mov.l r6, @(oR6,r4)
mov.l r7, @(oR7,r4)
mov r4, r0
add #(oMACL+4), r0
sts.l macl, @-r0
sts.l mach, @-r0
stc.l gbr, @-r0
/* Save T flag to SR. */
movt r1
mov.l r1, @-r0
sts.l pr, @-r0
/* The return address of getcontext is the restart pc. */
sts.l pr, @-r0
mov.l r15, @-r0
mov.l r14, @-r0
mov.l r13, @-r0
mov.l r12, @-r0
mov.l r11, @-r0
mov.l r10, @-r0
mov.l r9, @-r0
mov.l r8, @-r0
mov r4, r0
/* We need 2 add instruction because oFPUL+4 > 127. */
add #124,r0
add #(oFPUL+4-124),r0
sts.l fpul, @-r0
sts.l fpscr, @-r0
frchg
fmov.s fr15, @-r0
fmov.s fr14, @-r0
fmov.s fr13, @-r0
fmov.s fr12, @-r0
fmov.s fr11, @-r0
fmov.s fr10, @-r0
fmov.s fr9, @-r0
fmov.s fr8, @-r0
fmov.s fr7, @-r0
fmov.s fr6, @-r0
fmov.s fr5, @-r0
fmov.s fr4, @-r0
fmov.s fr3, @-r0
fmov.s fr2, @-r0
fmov.s fr1, @-r0
fmov.s fr0, @-r0
frchg
fmov.s fr15, @-r0
fmov.s fr14, @-r0
fmov.s fr13, @-r0
fmov.s fr12, @-r0
fmov.s fr11, @-r0
fmov.s fr10, @-r0
fmov.s fr9, @-r0
fmov.s fr8, @-r0
fmov.s fr7, @-r0
fmov.s fr6, @-r0
fmov.s fr5, @-r0
fmov.s fr4, @-r0
fmov.s fr3, @-r0
fmov.s fr2, @-r0
fmov.s fr1, @-r0
fmov.s fr0, @-r0
/* sigprocmask (SIG_BLOCK, NULL, &uc->uc_sigmask). */
mov r4, r6
/* We need 2 add instruction because oSIGMASK > 127. */
add #(oSIGMASK/2), r6
add #(oSIGMASK/2), r6
mov #SIG_BLOCK, r4
mov #0, r5
mov #+SYS_ify(sigprocmask), r3
trapa #0x13
mov r0, r1
mov #-12, r2
shad r2, r1
not r1, r1 // r1=0 means r0 = -1 to -4095
tst r1, r1 // i.e. error in linux
bf .Lgetcontext_end
.Lsyscall_error:
SYSCALL_ERROR_HANDLER
.Lgetcontext_end:
/* All done, return 0 for success. */
mov #0, r0
.Lpseudo_end:
rts
nop
cfi_endproc
PSEUDO_END(__getcontext)
weak_alias (__getcontext, getcontext)

141
sysdeps/unix/sysv/linux/sh/sh4/setcontext.S Normal file
View File

@ -0,0 +1,141 @@
/* Install given context.
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>
#include "ucontext_i.h"
/* int __setcontext (const ucontext_t *uc); */
.text
.align 5
cfi_startproc
ENTRY(__setcontext)
mov r4, r8
/* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, NULL). */
mov r4, r5
add #(oSIGMASK/2), r5
add #(oSIGMASK/2), r5
mov #SIG_SETMASK, r4
mov #0, r6
mov #+SYS_ify(sigprocmask), r3
trapa #0x13
mov r0, r1
mov #-12, r2
shad r2, r1
not r1, r1 // r1=0 means r0 = -1 to -4095
tst r1, r1 // i.e. error in linux
bf .Lsetcontext_restore
.Lsyscall_error:
SYSCALL_ERROR_HANDLER
.Lpseudo_end:
rts
nop
.Lsetcontext_restore:
mov r8, r0
add #(oFR0),r0
fmov.s @r0+, fr0
fmov.s @r0+, fr1
fmov.s @r0+, fr2
fmov.s @r0+, fr3
fmov.s @r0+, fr4
fmov.s @r0+, fr5
fmov.s @r0+, fr6
fmov.s @r0+, fr7
fmov.s @r0+, fr8
fmov.s @r0+, fr9
fmov.s @r0+, fr10
fmov.s @r0+, fr11
fmov.s @r0+, fr12
fmov.s @r0+, fr13
fmov.s @r0+, fr14
fmov.s @r0+, fr15
frchg
fmov.s @r0+, fr0
fmov.s @r0+, fr1
fmov.s @r0+, fr2
fmov.s @r0+, fr3
fmov.s @r0+, fr4
fmov.s @r0+, fr5
fmov.s @r0+, fr6
fmov.s @r0+, fr7
fmov.s @r0+, fr8
fmov.s @r0+, fr9
fmov.s @r0+, fr10
fmov.s @r0+, fr11
fmov.s @r0+, fr12
fmov.s @r0+, fr13
fmov.s @r0+, fr14
fmov.s @r0+, fr15
frchg
lds.l @r0+, fpscr
lds.l @r0+, fpul
mov r8, r0
add #(oPC), r0
mov.l @r0+, r2
lds.l @r0+, pr
/* Restore T frag. */
mov.l @r0+, r1
shlr r1
/* Skip GBR which is used for thread pointer. */
add #4, r0
lds.l @r0+, mach
lds.l @r0+, macl
mov r8, r0
add #(oR9), r0
mov.l @r0+, r9
mov.l @r0+, r10
mov.l @r0+, r11
mov.l @r0+, r12
mov.l @r0+, r13
mov.l @r0+, r14
mov.l @r0+, r15
mov r8, r0
mov.l @(oR0,r0), r1
mov.l r1, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r1, 0)
mov.l r2, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r2, 0)
mov.l @(oR1,r0), r1
mov.l @(oR2,r0), r2
mov.l @(oR3,r0), r3
mov.l @(oR4,r0), r4
mov.l @(oR5,r0), r5
mov.l @(oR6,r0), r6
mov.l @(oR7,r0), r7
mov.l @(oR8,r0), r8
mov.l @r15+, r0
jmp @r0
mov.l @r15+, r0
cfi_endproc
PSEUDO_END(__setcontext)
weak_alias (__setcontext, setcontext)

216
sysdeps/unix/sysv/linux/sh/sh4/swapcontext.S Normal file
View File

@ -0,0 +1,216 @@
/* Save current context and install the given one.
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>
#include "ucontext_i.h"
/* int __swapcontext (ucontext_t *ouc, const ucontext_t *uc); */
.text
.align 5
cfi_startproc
ENTRY(__swapcontext)
/* Return value of getcontext. R0 is the only register whose
value is not preserved. */
mov #0, r0
mov.l r0, @(oR0,r4)
mov.l r1, @(oR1,r4)
mov.l r2, @(oR2,r4)
mov.l r3, @(oR3,r4)
mov.l r4, @(oR4,r4)
mov.l r5, @(oR5,r4)
mov.l r6, @(oR6,r4)
mov.l r7, @(oR7,r4)
mov r4, r0
add #(oMACL+4), r0
sts.l macl, @-r0
sts.l mach, @-r0
stc.l gbr, @-r0
/* Save T flag to SR. */
movt r1
mov.l r1, @-r0
sts.l pr, @-r0
/* The return address of getcontext is the restart pc. */
sts.l pr, @-r0
mov.l r15, @-r0
mov.l r14, @-r0
mov.l r13, @-r0
mov.l r12, @-r0
mov.l r11, @-r0
mov.l r10, @-r0
mov.l r9, @-r0
mov.l r8, @-r0
mov r4, r0
/* We need 2 add instruction because oFPUL+4 >= 127. */
add #124,r0
add #(oFPUL+4-124),r0
sts.l fpul, @-r0
sts.l fpscr, @-r0
frchg
fmov.s fr15, @-r0
fmov.s fr14, @-r0
fmov.s fr13, @-r0
fmov.s fr12, @-r0
fmov.s fr11, @-r0
fmov.s fr10, @-r0
fmov.s fr9, @-r0
fmov.s fr8, @-r0
fmov.s fr7, @-r0
fmov.s fr6, @-r0
fmov.s fr5, @-r0
fmov.s fr4, @-r0
fmov.s fr3, @-r0
fmov.s fr2, @-r0
fmov.s fr1, @-r0
fmov.s fr0, @-r0
frchg
fmov.s fr15, @-r0
fmov.s fr14, @-r0
fmov.s fr13, @-r0
fmov.s fr12, @-r0
fmov.s fr11, @-r0
fmov.s fr10, @-r0
fmov.s fr9, @-r0
fmov.s fr8, @-r0
fmov.s fr7, @-r0
fmov.s fr6, @-r0
fmov.s fr5, @-r0
fmov.s fr4, @-r0
fmov.s fr3, @-r0
fmov.s fr2, @-r0
fmov.s fr1, @-r0
fmov.s fr0, @-r0
mov r5, r8
/* sigprocmask (SIG_SETMASK, &uc->uc_sigmask, &ouc->uc_sigmask). */
mov #oSIGMASK, r1
extu.b r1, r1
add r1, r5
mov r4, r6
add r1, r6
mov #SIG_SETMASK, r4
mov #+SYS_ify(sigprocmask), r3
trapa #0x13
mov r0, r1
mov #-12, r2
shad r2, r1
not r1, r1 // r1=0 means r0 = -1 to -4095
tst r1, r1 // i.e. error in linux
bf .Lswapcontext_restore
.Lsyscall_error:
SYSCALL_ERROR_HANDLER
.Lpseudo_end:
rts
nop
.Lswapcontext_restore:
mov r8, r0
add #(oFR0),r0
fmov.s @r0+, fr0
fmov.s @r0+, fr1
fmov.s @r0+, fr2
fmov.s @r0+, fr3
fmov.s @r0+, fr4
fmov.s @r0+, fr5
fmov.s @r0+, fr6
fmov.s @r0+, fr7
fmov.s @r0+, fr8
fmov.s @r0+, fr9
fmov.s @r0+, fr10
fmov.s @r0+, fr11
fmov.s @r0+, fr12
fmov.s @r0+, fr13
fmov.s @r0+, fr14
fmov.s @r0+, fr15
frchg
fmov.s @r0+, fr0
fmov.s @r0+, fr1
fmov.s @r0+, fr2
fmov.s @r0+, fr3
fmov.s @r0+, fr4
fmov.s @r0+, fr5
fmov.s @r0+, fr6
fmov.s @r0+, fr7
fmov.s @r0+, fr8
fmov.s @r0+, fr9
fmov.s @r0+, fr10
fmov.s @r0+, fr11
fmov.s @r0+, fr12
fmov.s @r0+, fr13
fmov.s @r0+, fr14
fmov.s @r0+, fr15
frchg
lds.l @r0+, fpscr
lds.l @r0+, fpul
mov r8, r0
add #(oPC), r0
mov.l @r0+, r2
lds.l @r0+, pr
/* Restore T frag. */
mov.l @r0+, r1
shlr r1
/* Skip GBR which is used for thread pointer. */
add #4, r0
lds.l @r0+, mach
lds.l @r0+, macl
mov r8, r0
add #(oR9), r0
mov.l @r0+, r9
mov.l @r0+, r10
mov.l @r0+, r11
mov.l @r0+, r12
mov.l @r0+, r13
mov.l @r0+, r14
mov.l @r0+, r15
mov r8, r0
mov.l @(oR0,r0), r1
mov.l r1, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r1, 0)
mov.l r2, @-r15
cfi_adjust_cfa_offset(4)
cfi_rel_offset (r2, 0)
mov.l @(oR1,r0), r1
mov.l @(oR2,r0), r2
mov.l @(oR3,r0), r3
mov.l @(oR4,r0), r4
mov.l @(oR5,r0), r5
mov.l @(oR6,r0), r6
mov.l @(oR7,r0), r7
mov.l @(oR8,r0), r8
mov.l @r15+, r0
jmp @r0
mov.l @r15+, r0
cfi_endproc
PSEUDO_END(__swapcontext)
weak_alias (__swapcontext, swapcontext)

12
sysdeps/unix/sysv/linux/sh/sys/ucontext.h → sysdeps/unix/sysv/linux/sh/sh4/sys/ucontext.h
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
/* Copyright (C) 1999, 2000, 2001, 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
@ -87,13 +87,19 @@ typedef freg_t fpregset_t[NFPREG];
/* Context to describe whole processor state. */
typedef struct
{
unsigned int oldmask;
gregset_t gregs;
unsigned int pc;
unsigned int pr;
unsigned int sr;
unsigned int gbr;
unsigned int mach;
unsigned int macl;
fpregset_t fpregs;
fpregset_t xfpregs;
unsigned int fpscr;
unsigned int fpul;
unsigned int macl;
unsigned int mach;
unsigned int ownedfp;
} mcontext_t;
/* Userlevel context. */

149
sysdeps/unix/sysv/linux/sh/sh4/ucontext_i.h Normal file
View File

@ -0,0 +1,149 @@
/* Offsets and other constants needed in the *context() function
implementation.
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. */
#define SIG_BLOCK 0
#define SIG_SETMASK 2
/* Offsets of the fields in the ucontext_t structure. */
#define oLINK 4
#define oSS_SP 8
#define oSS_SIZE 16
#define oR0 24
#define oR1 28
#define oR2 32
#define oR3 36
#define oR4 40
#define oR5 44
#define oR6 48
#define oR7 52
#define oR8 56
#define oR9 60
#define oR10 64
#define oR11 68
#define oR12 72
#define oR13 76
#define oR14 80
#define oR15 84
#define oPC 88
#define oPR 92
#define oSR 96
#define oGBR 100
#define oMACH 104
#define oMACL 108
#define oFR0 112
#define oFR1 116
#define oFR2 120
#define oFR3 124
#define oFR4 128
#define oFR5 132
#define oFR6 136
#define oFR7 140
#define oFR8 144
#define oFR9 148
#define oFR10 152
#define oFR11 156
#define oFR12 160
#define oFR13 164
#define oFR14 168
#define oFR15 172
#define oXFR0 176
#define oXFR1 180
#define oXFR2 184
#define oXFR3 188
#define oXFR4 192
#define oXFR5 196
#define oXFR6 200
#define oXFR7 204
#define oXFR8 208
#define oXFR9 212
#define oXFR10 216
#define oXFR11 220
#define oXFR12 224
#define oXFR13 228
#define oXFR14 232
#define oXFR15 236
#define oFPSCR 240
#define oFPUL 244
#define oOWNEDFP 248
#define oSIGMASK 252
/* Tests run in stdlib/tst-ucontext-off. */
#define TESTS \
TEST (uc_link, oLINK); \
TEST (uc_stack.ss_sp, oSS_SP); \
TEST (uc_stack.ss_size, oSS_SIZE); \
TEST (uc_mcontext.gregs[R0], oR0); \
TEST (uc_mcontext.gregs[R1], oR1); \
TEST (uc_mcontext.gregs[R2], oR2); \
TEST (uc_mcontext.gregs[R3], oR3); \
TEST (uc_mcontext.gregs[R4], oR4); \
TEST (uc_mcontext.gregs[R5], oR5); \
TEST (uc_mcontext.gregs[R6], oR6); \
TEST (uc_mcontext.gregs[R7], oR7); \
TEST (uc_mcontext.gregs[R8], oR8); \
TEST (uc_mcontext.gregs[R9], oR9); \
TEST (uc_mcontext.gregs[R10], oR10); \
TEST (uc_mcontext.gregs[R11], oR11); \
TEST (uc_mcontext.gregs[R12], oR12); \
TEST (uc_mcontext.gregs[R13], oR13); \
TEST (uc_mcontext.gregs[R14], oR14); \
TEST (uc_mcontext.gregs[R15], oR15); \
TEST (uc_mcontext.pc, oPC); \
TEST (uc_mcontext.pr, oPR); \
TEST (uc_mcontext.sr, oSR); \
TEST (uc_mcontext.gbr, oGBR); \
TEST (uc_mcontext.mach, oMACH); \
TEST (uc_mcontext.macl, oMACL); \
TEST (uc_mcontext.fpregs[0], oFR0); \
TEST (uc_mcontext.fpregs[1], oFR1); \
TEST (uc_mcontext.fpregs[2], oFR2); \
TEST (uc_mcontext.fpregs[3], oFR3); \
TEST (uc_mcontext.fpregs[4], oFR4); \
TEST (uc_mcontext.fpregs[5], oFR5); \
TEST (uc_mcontext.fpregs[6], oFR6); \
TEST (uc_mcontext.fpregs[7], oFR7); \
TEST (uc_mcontext.fpregs[8], oFR8); \
TEST (uc_mcontext.fpregs[9], oFR9); \
TEST (uc_mcontext.fpregs[10], oFR10); \
TEST (uc_mcontext.fpregs[11], oFR11); \
TEST (uc_mcontext.fpregs[12], oFR12); \
TEST (uc_mcontext.fpregs[13], oFR13); \
TEST (uc_mcontext.fpregs[14], oFR14); \
TEST (uc_mcontext.fpregs[15], oFR15); \
TEST (uc_mcontext.xfpregs[0], oXFR0); \
TEST (uc_mcontext.xfpregs[1], oXFR1); \
TEST (uc_mcontext.xfpregs[2], oXFR2); \
TEST (uc_mcontext.xfpregs[3], oXFR3); \
TEST (uc_mcontext.xfpregs[4], oXFR4); \
TEST (uc_mcontext.xfpregs[5], oXFR5); \
TEST (uc_mcontext.xfpregs[6], oXFR6); \
TEST (uc_mcontext.xfpregs[7], oXFR7); \
TEST (uc_mcontext.xfpregs[8], oXFR8); \
TEST (uc_mcontext.xfpregs[9], oXFR9); \
TEST (uc_mcontext.xfpregs[10], oXFR10); \
TEST (uc_mcontext.xfpregs[11], oXFR11); \
TEST (uc_mcontext.xfpregs[12], oXFR12); \
TEST (uc_mcontext.xfpregs[13], oXFR13); \
TEST (uc_mcontext.xfpregs[14], oXFR14); \
TEST (uc_mcontext.xfpregs[15], oXFR15); \
TEST (uc_mcontext.fpscr, oFPSCR); \
TEST (uc_mcontext.fpul, oFPUL); \
TEST (uc_mcontext.ownedfp, oOWNEDFP); \
TEST (uc_sigmask, oSIGMASK);