search for: at_sysinfo

...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 +++ b/usr/klibc/libc_init.c @@ -25,6 +25,7 @@ #include <klibc/compiler.h> #include <elf.h> #includ...

...087f95..1c6180b 100644 --- a/usr/klibc/libc_init.c +++ b/usr/klibc/libc_init.c @@ -90,6 +90,15 @@ __noreturn __libc_init(uintptr_t * elfdata, void (*onexit) (void)) __page_size = page_size = __auxval[AT_PAGESZ]; +#ifdef __i386__ + { + extern void (*__syscall_entry)(int, ...); + if (__auxval[AT_SYSINFO]) + __syscall_entry = (void (*)(int, ...)) + __auxval[AT_SYSINFO]; + } +#endif + #if __GNUC__ >= 4 /* unsigned int is 32 bits on all our architectures */ page_shift = __builtin_clz(page_size) ^ 31;

...hinit.h @@ -1,5 +1,5 @@ /* - * arch/i386/archinit.c + * arch/i386/include/klibc/archinit.h * * Architecture-specific libc initialization */ @@ -11,7 +11,7 @@ extern void (*__syscall_entry)(int, ...); -void __libc_archinit(void) +static inline void __libc_archinit(void) { if (__auxval[AT_SYSINFO]) __syscall_entry = (void (*)(int, ...)) __auxval[AT_SYSINFO]; diff --git a/usr/include/klibc/sysconfig.h b/usr/include/klibc/sysconfig.h index ab947c0..c91d5b8 100644 --- a/usr/include/klibc/sysconfig.h +++ b/usr/include/klibc/sysconfig.h @@ -219,7 +219,7 @@ /* * _KLIBC_HAS_ARCHINIT * - *...

...ions(-) diff --git a/usr/include/sys/auxv.h b/usr/include/sys/auxv.h new file mode 100644 index 0000000..08fcfcf --- /dev/null +++ b/usr/include/sys/auxv.h @@ -0,0 +1,16 @@ +#ifndef _SYS_AUXV_H +#define _SYS_AUXV_H + +#include <klibc/compiler.h> +#include <elf.h> + +#define _AUXVAL_MAX AT_SYSINFO_EHDR + +__extern unsigned long __auxval[_AUXVAL_MAX]; + +__static_inline unsigned long getauxval(unsigned long __t) +{ + return (__t >= _AUXVAL_MAX) ? 0 : __auxval[__t]; +} + +#endif /* _SYS_AUXV_H */ diff --git a/usr/include/sys/elfcommon.h b/usr/include/sys/elfcommon.h index 300ff4e..603b0ce 1...

This adds support for CONFIG_COMPAT_VDSO. As this will certainly raise questions, I left in the code needed for an alternative approach (which requires mode C code, but less build script changes). Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: head-2007-02-27/arch/i386/Kconfig =================================================================== ---

This adds support for CONFIG_COMPAT_VDSO. As this will certainly raise questions, I left in the code needed for an alternative approach (which requires mode C code, but less build script changes). Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: head-2007-02-27/arch/i386/Kconfig =================================================================== ---

This adds support for CONFIG_COMPAT_VDSO. As this will certainly raise questions, I left in the code needed for an alternative approach (which requires mode C code, but less build script changes). Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: head-2007-02-27/arch/i386/Kconfig =================================================================== ---

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

...el_vsyscall) extern void __kernel_vsyscall; +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES +struct linux_binprm; +extern int arch_setup_additional_pages(struct linux_binprm *bprm, + int executable_stack); + #define ARCH_DLINFO \ do { \ NEW_AUX_ENT(AT_SYSINFO, VSYSCALL_ENTRY); \ diff -urpN --exclude TAGS -X /home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal linux-2.6.17-rc4/include/asm-i386/fixmap.h working-2.6.17-rc4-vsyscall-above-stack/include/asm-i386/fixmap.h --- linux-2.6.17-rc4/include/asm-i386/fixmap.h 2006-03-23 12:43:10.0000000...

...el_vsyscall) extern void __kernel_vsyscall; +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES +struct linux_binprm; +extern int arch_setup_additional_pages(struct linux_binprm *bprm, + int executable_stack); + #define ARCH_DLINFO \ do { \ NEW_AUX_ENT(AT_SYSINFO, VSYSCALL_ENTRY); \ diff -urpN --exclude TAGS -X /home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal linux-2.6.17-rc4/include/asm-i386/fixmap.h working-2.6.17-rc4-vsyscall-above-stack/include/asm-i386/fixmap.h --- linux-2.6.17-rc4/include/asm-i386/fixmap.h 2006-03-23 12:43:10.0000000...

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --

...; + +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES extern int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack); -#endif = extern unsigned int vdso_enabled; = #define ARCH_DLINFO \ do if (vdso_enabled) { \ NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_COMPAT_BASE); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE);\ } while (0) = #endif Index: linux-2.6.21/include/asm-i386/fixmap.h =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=...

...; + +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES extern int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack); -#endif = extern unsigned int vdso_enabled; = #define ARCH_DLINFO \ do if (vdso_enabled) { \ NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_COMPAT_BASE); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE);\ } while (0) = #endif Index: linux-2.6.21/include/asm-i386/fixmap.h =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=...

Hi, after a year, I decided to hack on klibc again. I?ve reworked both the patch to add mkstemp(), discussing to use AT_RANDOM as cheap entropy source on IRC (if there will ever be another entropy consumer, I can quickly write a minimal arc4random() seeded from it, as it has only 16 octets), capable of making a working mksh (static and shared) on amd64/xen, and the m68k support code, leading to

...YSCALL_BASE) extern void __kernel_vsyscall; +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES +struct linux_binprm; +extern int arch_setup_additional_pages(struct linux_binprm *bprm, + int executable_stack); + #define ARCH_DLINFO \ do { \ NEW_AUX_ENT(AT_SYSINFO, VSYSCALL_ENTRY); \ @@ -148,15 +158,15 @@ do { \ * Dumping its extra ELF program headers includes all the other information * a debugger needs to easily find how the vsyscall DSO was being used. */ -#define ELF_CORE_EXTRA_PHDRS (VSYSCALL_EHDR->e_phnum) +#define ELF_CORE_EXTRA_PHDRS...

...YSCALL_BASE) extern void __kernel_vsyscall; +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES +struct linux_binprm; +extern int arch_setup_additional_pages(struct linux_binprm *bprm, + int executable_stack); + #define ARCH_DLINFO \ do { \ NEW_AUX_ENT(AT_SYSINFO, VSYSCALL_ENTRY); \ @@ -148,15 +158,15 @@ do { \ * Dumping its extra ELF program headers includes all the other information * a debugger needs to easily find how the vsyscall DSO was being used. */ -#define ELF_CORE_EXTRA_PHDRS (VSYSCALL_EHDR->e_phnum) +#define ELF_CORE_EXTRA_PHDRS...

...e the Mach thread port as thread id on Mac OS. server: Implement process control using Mach primitives for Mac OS. configure: Added a generic macro for checking for Mingw programs. configure: Use the correct ar tool when building Mingw import libraries. preloader: Reset both AT_SYSINFO and AT_SYSINFO_EHDR when one of them conflicts. Revert "wined3d: Simplify the get_write_mask and get_swizzle functions." gdi32: Avoid leaking a handle in MFDRV_ExtSelectClipRgn. make_makefiles: Properly skip dlls marked with MKDLL_SKIP. Use GetDC instead of CreateD...