diff options
author | kib <kib@FreeBSD.org> | 2012-01-21 18:00:28 +0000 |
---|---|---|
committer | kib <kib@FreeBSD.org> | 2012-01-21 18:00:28 +0000 |
commit | 8c121450bcfa7aaf7c661baf2809bafc48c1f60f (patch) | |
tree | 4806ea5a2bf8eb5da87e290d16da86d5e5f5222f /lib/libc | |
parent | 3572bdc783bebdf33330a1218e74826c4096ae81 (diff) | |
download | FreeBSD-src-8c121450bcfa7aaf7c661baf2809bafc48c1f60f.zip FreeBSD-src-8c121450bcfa7aaf7c661baf2809bafc48c1f60f.tar.gz |
Add API for obtaining extended machine context states that cannot be
fit into existing mcontext_t.
On i386 and amd64 do return the extended FPU states using
getcontextx(3). For other architectures, getcontextx(3) returns the
same information as getcontext(2).
Tested by: pho
MFC after: 1 month
Diffstat (limited to 'lib/libc')
-rw-r--r-- | lib/libc/amd64/gen/Makefile.inc | 2 | ||||
-rw-r--r-- | lib/libc/amd64/gen/getcontextx.c | 101 | ||||
-rw-r--r-- | lib/libc/arm/gen/Makefile.inc | 2 | ||||
-rw-r--r-- | lib/libc/arm/gen/getcontextx.c | 69 | ||||
-rw-r--r-- | lib/libc/gen/Symbol.map | 3 | ||||
-rw-r--r-- | lib/libc/gen/getcontext.3 | 31 | ||||
-rw-r--r-- | lib/libc/gen/ucontext.3 | 4 | ||||
-rw-r--r-- | lib/libc/i386/gen/Makefile.inc | 2 | ||||
-rw-r--r-- | lib/libc/i386/gen/getcontextx.c | 133 | ||||
-rw-r--r-- | lib/libc/ia64/gen/Makefile.inc | 2 | ||||
-rw-r--r-- | lib/libc/ia64/gen/getcontextx.c | 69 | ||||
-rw-r--r-- | lib/libc/mips/gen/Makefile.inc | 3 | ||||
-rw-r--r-- | lib/libc/mips/gen/getcontextx.c | 69 | ||||
-rw-r--r-- | lib/libc/powerpc/gen/Makefile.inc | 2 | ||||
-rw-r--r-- | lib/libc/powerpc/gen/getcontextx.c | 69 | ||||
-rw-r--r-- | lib/libc/powerpc64/gen/Makefile.inc | 2 | ||||
-rw-r--r-- | lib/libc/powerpc64/gen/getcontextx.c | 69 | ||||
-rw-r--r-- | lib/libc/sparc64/gen/Makefile.inc | 2 | ||||
-rw-r--r-- | lib/libc/sparc64/gen/getcontextx.c | 69 |
19 files changed, 693 insertions, 10 deletions
diff --git a/lib/libc/amd64/gen/Makefile.inc b/lib/libc/amd64/gen/Makefile.inc index 30fb05f..fb4f7f4 100644 --- a/lib/libc/amd64/gen/Makefile.inc +++ b/lib/libc/amd64/gen/Makefile.inc @@ -2,7 +2,7 @@ # $FreeBSD$ SRCS+= _setjmp.S _set_tp.c rfork_thread.S setjmp.S sigsetjmp.S \ - fabs.S \ + fabs.S getcontextx.c \ infinity.c ldexp.c makecontext.c signalcontext.c \ flt_rounds.c fpgetmask.c fpsetmask.c fpgetprec.c fpsetprec.c \ fpgetround.c fpsetround.c fpgetsticky.c diff --git a/lib/libc/amd64/gen/getcontextx.c b/lib/libc/amd64/gen/getcontextx.c new file mode 100644 index 0000000..24361bc --- /dev/null +++ b/lib/libc/amd64/gen/getcontextx.c @@ -0,0 +1,101 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdarg.h> +#include <stdlib.h> +#include <machine/cpufunc.h> +#include <machine/fpu.h> +#include <machine/specialreg.h> +#include <machine/sysarch.h> + +static int xstate_sz = -1; + +size_t +__getcontextx_size(void) +{ + u_int p[4]; + + if (xstate_sz == -1) { + do_cpuid(1, p); + if ((p[2] & CPUID2_OSXSAVE) != 0) { + cpuid_count(0xd, 0x0, p); + xstate_sz = p[1] - sizeof(struct savefpu); + } else + xstate_sz = 0; + } + + return (sizeof(ucontext_t) + xstate_sz); +} + +int +__fillcontextx(char *ctx) +{ + struct amd64_get_xfpustate xfpu; + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + if (getcontext(ucp) == -1) + return (-1); + if (xstate_sz != 0) { + xfpu.addr = (char *)(ucp + 1); + xfpu.len = xstate_sz; + if (sysarch(AMD64_GET_XFPUSTATE, &xfpu) == -1) + return (-1); + ucp->uc_mcontext.mc_xfpustate = (__register_t)xfpu.addr; + ucp->uc_mcontext.mc_xfpustate_len = xstate_sz; + ucp->uc_mcontext.mc_flags |= _MC_HASFPXSTATE; + } else { + ucp->uc_mcontext.mc_xfpustate = 0; + ucp->uc_mcontext.mc_xfpustate_len = 0; + } + return (0); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} diff --git a/lib/libc/arm/gen/Makefile.inc b/lib/libc/arm/gen/Makefile.inc index 56d6e2e..b47f57d 100644 --- a/lib/libc/arm/gen/Makefile.inc +++ b/lib/libc/arm/gen/Makefile.inc @@ -2,5 +2,5 @@ # $FreeBSD$ SRCS+= _ctx_start.S _setjmp.S _set_tp.c alloca.S fabs.c \ - infinity.c ldexp.c makecontext.c \ + getcontextx.c infinity.c ldexp.c makecontext.c \ setjmp.S signalcontext.c sigsetjmp.S divsi3.S flt_rounds.c diff --git a/lib/libc/arm/gen/getcontextx.c b/lib/libc/arm/gen/getcontextx.c new file mode 100644 index 0000000..b701c18 --- /dev/null +++ b/lib/libc/arm/gen/getcontextx.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdlib.h> + +size_t +__getcontextx_size(void) +{ + + return (sizeof(ucontext_t)); +} + +int +__fillcontextx(char *ctx) +{ + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + return (getcontext(ucp)); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} diff --git a/lib/libc/gen/Symbol.map b/lib/libc/gen/Symbol.map index e00e746..d794c0a 100644 --- a/lib/libc/gen/Symbol.map +++ b/lib/libc/gen/Symbol.map @@ -384,6 +384,7 @@ FBSD_1.2 { FBSD_1.3 { fdlopen; __FreeBSD_libc_enter_restricted_mode; + getcontextx; }; FBSDprivate_1.0 { @@ -507,4 +508,6 @@ FBSDprivate_1.0 { __elf_aux_vector; __pthread_map_stacks_exec; + __fillcontextx; + __getcontextx_size; }; diff --git a/lib/libc/gen/getcontext.3 b/lib/libc/gen/getcontext.3 index 2fda6b8..5b801fd 100644 --- a/lib/libc/gen/getcontext.3 +++ b/lib/libc/gen/getcontext.3 @@ -35,11 +35,11 @@ .\" .\" $FreeBSD$ .\" -.Dd September 10, 2002 +.Dd December 26, 2011 .Dt GETCONTEXT 3 .Os .Sh NAME -.Nm getcontext , setcontext +.Nm getcontext , getcontextx , setcontext .Nd get and set user thread context .Sh LIBRARY .Lb libc @@ -59,6 +59,20 @@ This saved context may then later be restored by calling .Fn setcontext . .Pp The +.Fn getcontextx +function saves the current execution context in the newly allocated structure +.Vt ucontext_t , +which is returned on success. +If architecture defines additional CPU states that can be stored in extended +blocks referenced from the +.Vt ucontext_t , +the memory for them may be allocated and their context also stored. +Memory returned by +.Fn getcontextx +function shall be freed using +.Fn free 3 . +.Pp +The .Fn setcontext function makes a previously saved thread context the current thread context, i.e., @@ -109,11 +123,24 @@ If successful, returns zero and .Fn setcontext does not return; otherwise \-1 is returned. +The +.Fn getcontextx +returns pointer to the allocated and initialized context on success, and +.Va NULL +on failure. .Sh ERRORS No errors are defined for .Fn getcontext or .Fn setcontext . +The +.Fn getcontextx +may return the following errors in +.Va errno : +.Bl -tag -width Er +.It Bq Er ENOMEM +No memory was available to allocate for the context or some extended state. +.El .Sh SEE ALSO .Xr sigaction 2 , .Xr sigaltstack 2 , diff --git a/lib/libc/gen/ucontext.3 b/lib/libc/gen/ucontext.3 index 0574322..69ecbc1 100644 --- a/lib/libc/gen/ucontext.3 +++ b/lib/libc/gen/ucontext.3 @@ -92,6 +92,9 @@ structures: .Ft int .Fn getcontext "ucontext_t *" ; .It +.Ft "ucontext_t *" +.Fn getcontextx "void" ; +.It .Ft int .Fn setcontext "const ucontext_t *" ; .It @@ -104,4 +107,5 @@ structures: .Sh SEE ALSO .Xr sigaltstack 2 , .Xr getcontext 3 , +.Xr getcontextx 3 , .Xr makecontext 3 diff --git a/lib/libc/i386/gen/Makefile.inc b/lib/libc/i386/gen/Makefile.inc index 45e69ca..73dcabb 100644 --- a/lib/libc/i386/gen/Makefile.inc +++ b/lib/libc/i386/gen/Makefile.inc @@ -2,5 +2,5 @@ # $FreeBSD$ SRCS+= _ctx_start.S _setjmp.S _set_tp.c fabs.S \ - flt_rounds.c infinity.c ldexp.c makecontext.c \ + flt_rounds.c getcontextx.c infinity.c ldexp.c makecontext.c \ rfork_thread.S setjmp.S signalcontext.c sigsetjmp.S diff --git a/lib/libc/i386/gen/getcontextx.c b/lib/libc/i386/gen/getcontextx.c new file mode 100644 index 0000000..de0a1a3 --- /dev/null +++ b/lib/libc/i386/gen/getcontextx.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdarg.h> +#include <stdlib.h> +#include <machine/npx.h> +#include <machine/specialreg.h> +#include <machine/sysarch.h> + +static int xstate_sz = -1; + +size_t +__getcontextx_size(void) +{ + u_int p[4]; + int cpuid_supported; + + if (xstate_sz == -1) { + __asm __volatile( + " pushfl\n" + " popl %%eax\n" + " movl %%eax,%%ecx\n" + " xorl $0x200000,%%eax\n" + " pushl %%eax\n" + " popfl\n" + " pushfl\n" + " popl %%eax\n" + " xorl %%eax,%%ecx\n" + " je 1f\n" + " movl $1,%0\n" + " jmp 2f\n" + "1: movl $0,%0\n" + "2:\n" + : "=r" (cpuid_supported) : : "eax", "ecx"); + if (cpuid_supported) { + __asm __volatile( + " pushl %%ebx\n" + " cpuid\n" + " movl %%ebx,%1\n" + " popl %%ebx\n" + : "=a" (p[0]), "=r" (p[1]), "=c" (p[2]), "=d" (p[3]) + : "0" (0x0)); + if ((p[2] & CPUID2_OSXSAVE) != 0) { + __asm __volatile( + " pushl %%ebx\n" + " cpuid\n" + " movl %%ebx,%1\n" + " popl %%ebx\n" + : "=a" (p[0]), "=r" (p[1]), "=c" (p[2]), + "=d" (p[3]) + : "0" (0xd), "2" (0x0)); + xstate_sz = p[1] - sizeof(struct savexmm); + } else + xstate_sz = 0; + } else + xstate_sz = 0; + } + + return (sizeof(ucontext_t) + xstate_sz); +} + +int +__fillcontextx(char *ctx) +{ + struct i386_get_xfpustate xfpu; + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + if (getcontext(ucp) == -1) + return (-1); + if (xstate_sz != 0) { + xfpu.addr = (char *)(ucp + 1); + xfpu.len = xstate_sz; + if (sysarch(I386_GET_XFPUSTATE, &xfpu) == -1) + return (-1); + ucp->uc_mcontext.mc_xfpustate = (__register_t)xfpu.addr; + ucp->uc_mcontext.mc_xfpustate_len = xstate_sz; + ucp->uc_mcontext.mc_flags |= _MC_HASFPXSTATE; + } else { + ucp->uc_mcontext.mc_xfpustate = 0; + ucp->uc_mcontext.mc_xfpustate_len = 0; + } + return (0); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} diff --git a/lib/libc/ia64/gen/Makefile.inc b/lib/libc/ia64/gen/Makefile.inc index 685ab86..1e3373a 100644 --- a/lib/libc/ia64/gen/Makefile.inc +++ b/lib/libc/ia64/gen/Makefile.inc @@ -3,7 +3,7 @@ SRCS+= __divdf3.S __divdi3.S __divsf3.S __divsi3.S __moddi3.S __modsi3.S \ __udivdi3.S __udivsi3.S __umoddi3.S __umodsi3.S _mcount.S _set_tp.c \ _setjmp.S fabs.S flt_rounds.c fpgetmask.c fpgetround.c fpsetmask.c \ - fpsetround.c infinity.c ldexp.c makecontext.c setjmp.S \ + fpsetround.c getcontextx.c infinity.c ldexp.c makecontext.c setjmp.S \ signalcontext.c sigsetjmp.S # The following may go away if function _Unwind_FindTableEntry() diff --git a/lib/libc/ia64/gen/getcontextx.c b/lib/libc/ia64/gen/getcontextx.c new file mode 100644 index 0000000..b701c18 --- /dev/null +++ b/lib/libc/ia64/gen/getcontextx.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdlib.h> + +size_t +__getcontextx_size(void) +{ + + return (sizeof(ucontext_t)); +} + +int +__fillcontextx(char *ctx) +{ + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + return (getcontext(ucp)); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} diff --git a/lib/libc/mips/gen/Makefile.inc b/lib/libc/mips/gen/Makefile.inc index 8ee69d0..9d9cc7a 100644 --- a/lib/libc/mips/gen/Makefile.inc +++ b/lib/libc/mips/gen/Makefile.inc @@ -6,4 +6,5 @@ SRCS+= infinity.c fabs.c ldexp.c # SRCS+= flt_rounds.c fpgetmask.c fpgetround.c fpgetsticky.c fpsetmask.c \ # fpsetround.c fpsetsticky.c -SRCS+= _ctx_start.S _set_tp.c _setjmp.S makecontext.c setjmp.S signalcontext.c sigsetjmp.S +SRCS+= _ctx_start.S _set_tp.c _setjmp.S getcontextx.c makecontext.c \ + setjmp.S signalcontext.c sigsetjmp.S diff --git a/lib/libc/mips/gen/getcontextx.c b/lib/libc/mips/gen/getcontextx.c new file mode 100644 index 0000000..b701c18 --- /dev/null +++ b/lib/libc/mips/gen/getcontextx.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdlib.h> + +size_t +__getcontextx_size(void) +{ + + return (sizeof(ucontext_t)); +} + +int +__fillcontextx(char *ctx) +{ + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + return (getcontext(ucp)); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} diff --git a/lib/libc/powerpc/gen/Makefile.inc b/lib/libc/powerpc/gen/Makefile.inc index 3bfabda..79a2746 100644 --- a/lib/libc/powerpc/gen/Makefile.inc +++ b/lib/libc/powerpc/gen/Makefile.inc @@ -1,7 +1,7 @@ # $FreeBSD$ SRCS += _ctx_start.S fabs.S flt_rounds.c fpgetmask.c fpgetround.c \ - fpgetsticky.c fpsetmask.c fpsetround.c \ + fpgetsticky.c fpsetmask.c fpsetround.c getcontextx.c \ infinity.c ldexp.c makecontext.c _setjmp.S \ setjmp.S sigsetjmp.S signalcontext.c syncicache.c \ _set_tp.c diff --git a/lib/libc/powerpc/gen/getcontextx.c b/lib/libc/powerpc/gen/getcontextx.c new file mode 100644 index 0000000..b701c18 --- /dev/null +++ b/lib/libc/powerpc/gen/getcontextx.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdlib.h> + +size_t +__getcontextx_size(void) +{ + + return (sizeof(ucontext_t)); +} + +int +__fillcontextx(char *ctx) +{ + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + return (getcontext(ucp)); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} diff --git a/lib/libc/powerpc64/gen/Makefile.inc b/lib/libc/powerpc64/gen/Makefile.inc index 3bfabda..79a2746 100644 --- a/lib/libc/powerpc64/gen/Makefile.inc +++ b/lib/libc/powerpc64/gen/Makefile.inc @@ -1,7 +1,7 @@ # $FreeBSD$ SRCS += _ctx_start.S fabs.S flt_rounds.c fpgetmask.c fpgetround.c \ - fpgetsticky.c fpsetmask.c fpsetround.c \ + fpgetsticky.c fpsetmask.c fpsetround.c getcontextx.c \ infinity.c ldexp.c makecontext.c _setjmp.S \ setjmp.S sigsetjmp.S signalcontext.c syncicache.c \ _set_tp.c diff --git a/lib/libc/powerpc64/gen/getcontextx.c b/lib/libc/powerpc64/gen/getcontextx.c new file mode 100644 index 0000000..b701c18 --- /dev/null +++ b/lib/libc/powerpc64/gen/getcontextx.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdlib.h> + +size_t +__getcontextx_size(void) +{ + + return (sizeof(ucontext_t)); +} + +int +__fillcontextx(char *ctx) +{ + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + return (getcontext(ucp)); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} diff --git a/lib/libc/sparc64/gen/Makefile.inc b/lib/libc/sparc64/gen/Makefile.inc index f82f225..d3fbfe4 100644 --- a/lib/libc/sparc64/gen/Makefile.inc +++ b/lib/libc/sparc64/gen/Makefile.inc @@ -2,5 +2,5 @@ SRCS+= _ctx_start.S _setjmp.S fabs.S fixunsdfsi.S flt_rounds.c fpgetmask.c \ fpgetround.c fpgetsticky.c fpsetmask.c fpsetround.c \ - infinity.c ldexp.c makecontext.c \ + getcontextx.c infinity.c ldexp.c makecontext.c \ signalcontext.c setjmp.S sigsetjmp.S _set_tp.c diff --git a/lib/libc/sparc64/gen/getcontextx.c b/lib/libc/sparc64/gen/getcontextx.c new file mode 100644 index 0000000..b701c18 --- /dev/null +++ b/lib/libc/sparc64/gen/getcontextx.c @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdlib.h> + +size_t +__getcontextx_size(void) +{ + + return (sizeof(ucontext_t)); +} + +int +__fillcontextx(char *ctx) +{ + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + return (getcontext(ucp)); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} |