search for: auxv

....org/?p=libs/klibc/klibc.git;a=commit;h=fe3dff23a604af5c96060574bcdb4e723b977627 Author: H. Peter Anvin <hpa at linux.intel.com> AuthorDate: Wed, 9 Apr 2014 15:58:53 -0700 Committer: H. Peter Anvin <hpa at linux.intel.com> CommitDate: Wed, 9 Apr 2014 15:58:53 -0700 [klibc] <sys/auxv.h>: add missing dependency <klibc/extern.h> __extern is defined in <klibc/extern.h> Signed-off-by: H. Peter Anvin <hpa at linux.intel.com> --- usr/include/sys/auxv.h | 1 + 1 file changed, 1 insertion(+) diff --git a/usr/include/sys/auxv.h b/usr/include/sys/auxv.h index 08...

...web: http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=45e09deb6a0a4fcb3a56efb7e18807b2800e358f Author: H. Peter Anvin <hpa at zytor.com> AuthorDate: Fri, 24 Jan 2014 20:26:04 -0800 Committer: H. Peter Anvin <hpa at zytor.com> CommitDate: Fri, 24 Jan 2014 20:28:23 -0800 auxv: convert auxiliary vector into an array; define getauxval() Convert the ELF auxiliary vector into an array. Define getauxval() as an inline accessor to that array. Signed-off-by: H. Peter Anvin <hpa at zytor.com> --- usr/include/sys/auxv.h | 16 ++++++++++++++++ usr/include/sys/elfc...

The PowerPC-related changes in FLAC 1.3.3 have caused some portability problems. libFLAC/cpu.c assumes that the <sys/auxv.h> header and the getauxval() function are universally available on PowerPC platforms. They are not. On FreeBSD/powerpc, <sys/auxv.h> is available, but getauxval() is not. Equivalent functionality is provided by elf_aux_info(). On OpenBSD/powerpc, neither is available, nor any equivale...

...w file mode 100644 index 0000000..111d130 --- /dev/null +++ b/usr/klibc/arch/i386/archinit.c @@ -0,0 +1,18 @@ +/* + * arch/i386/archinit.c + * + * Architecture-specific libc initialization + */ + +#include <stdint.h> +#include <klibc/compiler.h> +#include <elf.h> +#include <sys/auxv.h> + +extern void (*__syscall_entry)(int, ...); + +void __libc_archinit(void) +{ + if (__auxval[AT_SYSINFO]) + __syscall_entry = (void (*)(int, ...)) __auxval[AT_SYSINFO]; +} diff --git a/usr/klibc/libc_init.c b/usr/klibc/libc_init.c index 1c6180b..c54d022 100644 --- a/usr/klibc/libc_init.c +++...

...ll @00510000 (0<0>) 0000000a:0000000b: loads DLL c:\windows\system\x11drv.dll @00460000 (0<0>) 0000000a:0000000b: loads DLL c:\windows\system\imm32.dll @00600000 (0<0>) 0000000a:0000000b: exception code=0x80000003 [New Thread 11] 0x006b1d4d in ?? () Unknown or malformed query Part:auxv:read::0,187 (no debugging symbols found)...(no debugging symbols found)...(no .............. .............. ...trace: 98 => 80 Wine-gdb> -- Please reply to rayner.2@osu.edu John N.Rayner Geography/Atmospheric Sciences, The Ohio State University, 1035 Derby Hall, 154 N. Oval Mall, Columb...

...would be nice to have a similar discussion for other architectures. One thing that wasn't clear to me from this proposal is how the glibc dynamic loader checks for the CPU feature flags. This is important for valgrind since it can communicate those through different means. cpuid interception, auxv AT_HWCAP/AT_HWCAP2 interception (but not AT_PLATFORM at the moment) and of course we can generate SIGILL for unsupported instructions. We currently don't intercept /proc/cpuinfo (but could). I think it is important to be precise here, because in the past this has sometimes caused confusion. Fo...

...int divide(int a, int b) { int result; if (have_hardware_division) asm (".cpu cortex-a15 \n sdiv %0, %1, %2" : "=r"(result) : "r"(a), "r"(b)); else result = a / b; return result; } int main(void) { int h, i; unsigned a; h = open("/proc/self/auxv", O_RDONLY); if (h != -1) { uint32_t cap[2]; while (read(h, &cap, 8) == 8) { if (cap[0] == 16) { #if defined(__thumb2__) if (cap[1] & (1 << 18)) have_hardware_division = 1; #else if (cap[1] & (1 << 17)) have_hardware_division = 1; #endif br...

...index c5b9bab4ef0c..6c4de361c42c 100644 --- a/usr/klibc/libc_init.c +++ b/usr/klibc/libc_init.c @@ -22,6 +22,7 @@ #include <stddef.h> #include <stdlib.h> #include <stdint.h> +#include <unistd.h> #include <klibc/compiler.h> #include <elf.h> #include <sys/auxv.h> @@ -39,7 +40,6 @@ # error "SHARED should be defined to 0 or 1" #endif -char **environ; unsigned int __page_size, __page_shift; struct auxentry { diff --git a/usr/klibc/lrand48.c b/usr/klibc/lrand48.c index 7dfcf9200128..a2fc87ae039f 100644 --- a/usr/klibc/lrand48.c +++ b/usr...

Most Linux distributions still compile against the original x86-64 baseline that was based on the AMD K8 (minus the 3DNow! parts, for Intel EM64T compatibility). There has been an attempt to use the existing AT_PLATFORM-based loading mechanism in the glibc dynamic linker to enable a selection of optimized libraries. But the general selection mechanism in glibc is problematic: hwcaps

...+ __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){ + /*Ignore exception.*/ + } +# endif +# endif +# endif + return flags; +} + +#elif defined(__linux__) +/* Linux based */ +opus_uint32 opus_cpu_capa(void) +{ + opus_uint32 flags = 0; + FILE *cpuinfo; + + /* Reading /proc/self/auxv would be easier, but that doesn't work reliably on + * Android */ + cpuinfo = fopen("/proc/cpuinfo", "r"); + + if(cpuinfo != NULL) + { + /* 512 should be enough for anybody (it's even enough for all the flags that + * x86 has accumulated... so far). */ + c...

..., file type elf64-x86-64. > ??? 0x00000000->0x00000558 at 0x00000f20: note0 READONLY HAS_CONTENTS > ??? 0x00000000->0x000000d8 at 0x00000fa4: .reg/4880 HAS_CONTENTS > ??? 0x00000000->0x000000d8 at 0x00000fa4: .reg HAS_CONTENTS > ??? 0x00000000->0x00000130 at 0x00001134: .auxv HAS_CONTENTS > ??? 0x00000000->0x00000200 at 0x00001278: .reg2/4880 HAS_CONTENTS > ??? 0x00000000->0x00000200 at 0x00001278: .reg2 HAS_CONTENTS > ??? 0x7f73e7dcf000->0x7f73ef5d3000 at 0x00002000: load1 ALLOC LOAD > HAS_CONTENTS > ??? 0x7f73efcd6000->0x7f73efcd7000 at...

On Wed, Jan 24, 2018 at 18:55:47 +0100, Thomas Robers wrote: > Am 23.01.2018 um 20:07 schrieb Josef 'Jeff' Sipek: > > On Tue, Jan 23, 2018 at 14:03:27 -0500, Josef 'Jeff' Sipek wrote: > > > On Tue, Jan 23, 2018 at 18:21:38 +0100, Thomas Robers wrote: ... > > > 1. Do you have any idea what the imap process was doing at the time of the > > >

...`/var/core/4880', file type elf64-x86-64. 0x00000000->0x00000558 at 0x00000f20: note0 READONLY HAS_CONTENTS 0x00000000->0x000000d8 at 0x00000fa4: .reg/4880 HAS_CONTENTS 0x00000000->0x000000d8 at 0x00000fa4: .reg HAS_CONTENTS 0x00000000->0x00000130 at 0x00001134: .auxv HAS_CONTENTS 0x00000000->0x00000200 at 0x00001278: .reg2/4880 HAS_CONTENTS 0x00000000->0x00000200 at 0x00001278: .reg2 HAS_CONTENTS 0x7f73e7dcf000->0x7f73ef5d3000 at 0x00002000: load1 ALLOC LOAD HAS_CONTENTS 0x7f73efcd6000->0x7f73efcd7000 at 0x07806000: load2a ALLOC...

...t a fault address lies in a known virtual memory view. ntdll: Check for invalid %gs value in 32-bit code. winex11: Preserve the client window when changing the window visual. server: Don't support debug registers in ptrace if sys/user.h is missing. loader: Define our own auxv structure. loader: Rename the elf_hash function to avoid conflicts. odbccu32: Remove an unnecessary source file. twain_32: Remove an unnecessary DllMain entry point. cryptnet: Remove an unnecessary DllMain entry point. dpnhpast: Remove an unnecessary DllMain entry poin...

The following series adds initial vector support for PowerPC64. On POWER9, flac --best is about 3.3x faster. Amitay Isaacs (2): Add m4 macro to check for C __attribute__ features Check if compiler supports target attribute on ppc64 Anton Blanchard (5): configure.ac: Remove SPE detection code configure.ac: Add VSX enable/disable configure.ac: Fix FLAC__CPU_PPC on little endian, and add

...-Wl,-no-undefined : yes Checking linker accepts ['-undefined', 'dynamic_lookup'] : no A local copy of the docbook.xsl wasn't found on your system consider installing package like docbook-xsl Checking for header sys/auxv.h : no Checking for getauxval : not found Checking for macro getauxval : not found Checking linker accepts -Wl,-no-undefined...