diff options
Diffstat (limited to 'libc')
26 files changed, 439 insertions, 288 deletions
diff --git a/libc/inet/ntop.c b/libc/inet/ntop.c index 0181a415c..30dde6f9c 100644 --- a/libc/inet/ntop.c +++ b/libc/inet/ntop.c @@ -105,7 +105,7 @@ inet_ntop6(const u_char *src, char *dst, size_t size) * to use pointer overlays. All the world's not a VAX. */ char tmp[sizeof ("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")], *tp; - struct { int base, len; } best, cur; + struct { int base, len; } best = { 0, 0 }, cur = { 0, 0 }; u_int words[8]; int i; diff --git a/libc/misc/regex/regex_internal.c b/libc/misc/regex/regex_internal.c index f9412d663..c74c6a0c3 100644 --- a/libc/misc/regex/regex_internal.c +++ b/libc/misc/regex/regex_internal.c @@ -650,15 +650,8 @@ re_string_reconstruct (re_string_t *pstr, int idx, int eflags) mbstate_t cur_state; wchar_t wc2; int mlen = raw + pstr->len - p; - unsigned char buf[6]; size_t mbclen; - if (BE (pstr->trans != NULL, 0)) - { - int i = mlen < 6 ? mlen : 6; - while (--i >= 0) - buf[i] = pstr->trans[p[i]]; - } /* XXX Don't use mbrtowc, we know which conversion to use (UTF-8 -> UCS4). */ memset (&cur_state, 0, sizeof (cur_state)); diff --git a/libc/stdio/__fpending.c b/libc/stdio/__fpending.c index a7fe05463..e7e33e80a 100644 --- a/libc/stdio/__fpending.c +++ b/libc/stdio/__fpending.c @@ -18,13 +18,6 @@ * convert wide chars to their multibyte encodings and buffer _those_. */ -#ifdef __UCLIBC_HAS_WCHAR__ -#warning Note: Unlike the glibc version, this __fpending returns bytes in buffer for wide streams too! - -link_warning(__fpending, "This version of __fpending returns bytes remaining in buffer for both narrow and wide streams. glibc's version returns wide chars in buffer for the wide stream case.") - -#endif - size_t __fpending(register FILE * __restrict stream) { __STDIO_STREAM_VALIDATE(stream); diff --git a/libc/stdio/_scanf.c b/libc/stdio/_scanf.c index 6ecb3cb1e..d48fd1267 100644 --- a/libc/stdio/_scanf.c +++ b/libc/stdio/_scanf.c @@ -553,9 +553,8 @@ enum { /**********************************************************************/ #ifdef L_vfwscanf -/* FIXME: "warning: the right operand of ">" changes sign when promoted" */ -#if WINT_MIN > EOF -#error Unfortunately, we currently need wint_t to be able to store EOF. Sorry. +#if WINT_MIN > WEOF +#error Unfortunately, we currently need wint_t to be able to store WEOF. Sorry. #endif #define W_EOF WEOF #define Wint wint_t @@ -1144,7 +1143,7 @@ int VFSCANF (FILE *__restrict fp, const Wchar *__restrict format, va_list arg) unsigned char buf[MAX_DIGITS+2]; #ifdef L_vfscanf unsigned char scanset[UCHAR_MAX + 1]; - unsigned char invert; /* Careful! Meaning changes. */ + unsigned char invert = 0; /* Careful! Meaning changes. */ #endif /* L_vfscanf */ unsigned char fail; unsigned char zero_conversions = 1; diff --git a/libc/stdio/_stdio.c b/libc/stdio/_stdio.c index 388a2117c..ee247a5fd 100644 --- a/libc/stdio/_stdio.c +++ b/libc/stdio/_stdio.c @@ -195,7 +195,6 @@ void _stdio_term(void) * chain might be corrupt due to a partial store. */ STDIO_INIT_MUTEX(_stdio_openlist_add_lock); -#warning check #ifdef __STDIO_BUFFERS STDIO_INIT_MUTEX(_stdio_openlist_del_lock); #endif diff --git a/libc/stdio/fflush.c b/libc/stdio/fflush.c index d9104a42f..cf0356a38 100644 --- a/libc/stdio/fflush.c +++ b/libc/stdio/fflush.c @@ -97,8 +97,6 @@ int fflush_unlocked(register FILE *stream) while(stream) { /* We only care about currently writing streams and do not want to * block trying to obtain mutexes on non-writing streams. */ -#warning fix for nonatomic -#warning unnecessary check if no threads if (__STDIO_STREAM_IS_WRITING(stream)) { /* ONLY IF ATOMIC!!! */ __MY_STDIO_THREADLOCK(stream); /* Need to check again once we have the lock. */ diff --git a/libc/stdio/popen.c b/libc/stdio/popen.c index 40a6ddac1..e1b1d4038 100644 --- a/libc/stdio/popen.c +++ b/libc/stdio/popen.c @@ -124,8 +124,6 @@ FILE *popen(const char *command, const char *modes) return NULL; } -#warning is pclose correct wrt the new mutex semantics? - int pclose(FILE *stream) { struct popen_list_item *p; diff --git a/libc/stdlib/system.c b/libc/stdlib/system.c index 3ef9a8b1c..8a6734db7 100644 --- a/libc/stdlib/system.c +++ b/libc/stdlib/system.c @@ -20,11 +20,7 @@ extern __typeof(system) __libc_system; #if !defined __UCLIBC_HAS_THREADS_NATIVE__ -/* uClinux-2.0 has vfork, but Linux 2.0 doesn't */ #include <sys/syscall.h> -#ifndef __NR_vfork -# define vfork fork -#endif int __libc_system(const char *command) { @@ -91,9 +87,6 @@ libc_hidden_proto(waitpid) #elif defined __sparc__ # define FORK() \ INLINE_CLONE_SYSCALL (CLONE_PARENT_SETTID | SIGCHLD, 0, &pid, NULL, NULL) -#elif defined __s390__ -# define FORK() \ - INLINE_SYSCALL (clone, 3, 0, CLONE_PARENT_SETTID | SIGCHLD, &pid) #else # define FORK() \ INLINE_SYSCALL (clone, 3, CLONE_PARENT_SETTID | SIGCHLD, 0, &pid) diff --git a/libc/sysdeps/linux/arm/clone.S b/libc/sysdeps/linux/arm/clone.S index 03cd10e62..d1c9239da 100644 --- a/libc/sysdeps/linux/arm/clone.S +++ b/libc/sysdeps/linux/arm/clone.S @@ -19,6 +19,7 @@ /* clone() is even more special than fork() as it mucks with stacks and invokes a function in the right context after its all over. */ +#include <sysdep.h> #define _ERRNO_H #include <features.h> #include <bits/errno.h> @@ -26,6 +27,13 @@ #include <bits/arm_asm.h> #include <bits/arm_bx.h> +#if defined __UCLIBC_HAS_THREADS__ && !defined __LINUXTHREADS_OLD__ +#include <sysdep-cancel.h> +#endif + +#define CLONE_VM 0x00000100 +#define CLONE_THREAD 0x00010000 + #if defined(__NR_clone) /* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ @@ -52,23 +60,22 @@ __clone: @ get flags mov r0, r2 @ new sp is already in r1 - @ load remaining arguments off the stack - stmfd sp!, {r4} - ldr r2, [sp, #4] - ldr r3, [sp, #8] - ldr r4, [sp, #12] DO_CALL (clone) movs a1, a1 blt __error - ldmnefd sp!, {r4} beq 1f bx lr 1: @ pick the function arg and call address off the stack and execute ldr r0, [sp, #4] +#if defined(__USE_BX__) ldr r1, [sp] bl 2f @ blx r1 +#else + mov lr, pc + ldr pc, [sp] +#endif @ and we are done, passing the return value through r0 bl HIDDEN_JUMPTARGET(_exit) @@ -87,6 +94,8 @@ __error: .pool #else __clone: +.fnstart +.cantunwind @ sanity check args cmp r0, #0 IT(te, ne) @@ -95,32 +104,58 @@ __clone: beq __error @ insert the args onto the new stack - sub r1, r1, #8 - str r3, [r1, #4] - @ save the function pointer as the 0th element - str r0, [r1] + str r3, [r1, #-4]! + str r0, [r1, #-4]! @ do the system call @ get flags mov r0, r2 +#ifdef RESET_PID + mov ip, r2 +#endif @ new sp is already in r1 - @ load remaining arguments off the stack - stmfd sp!, {r4} - ldr r2, [sp, #4] - ldr r3, [sp, #8] - ldr r4, [sp, #12] - DO_CALL (clone) - movs a1, a1 - IT(t, ne) - ldmnefd sp!, {r4} + push {r4, r7} + cfi_adjust_cfa_offset (8) + cfi_rel_offset (r4, 0) + cfi_rel_offset (r7, 4) + ldr r2, [sp, #8] + ldr r3, [sp, #12] + ldr r4, [sp, #16] + ldr r7, =SYS_ify(clone) + swi 0x0 + cfi_endproc + cmp r0, #0 + beq 1f + pop {r4, r7} blt __error - IT(t, ne) #if defined(__USE_BX__) bxne lr #else movne pc, lr #endif + cfi_startproc +.fnend +PSEUDO_END (__clone) + +1: + .fnstart + .cantunwind +#ifdef RESET_PID + tst ip, #CLONE_THREAD + bne 3f + GET_TLS (lr) + mov r1, r0 + tst ip, #CLONE_VM + ldr r7, =SYS_ify(getpid) + ite ne + movne r0, #-1 + swieq 0x0 + NEGOFF_ADJ_BASE (r1, TID_OFFSET) + str r0, NEGOFF_OFF1 (r1, TID_OFFSET) + str r0, NEGOFF_OFF2 (r1, PID_OFFSET, TID_OFFSET) +3: +#endif @ pick the function arg and call address off the stack and execute ldr r0, [sp, #4] mov lr, pc diff --git a/libc/sysdeps/linux/arm/sysdep.h b/libc/sysdeps/linux/arm/sysdep.h index 64f40407e..2d0a9cc41 100644 --- a/libc/sysdeps/linux/arm/sysdep.h +++ b/libc/sysdeps/linux/arm/sysdep.h @@ -213,6 +213,42 @@ __local_syscall_error: \ sees the right arguments. */ +#if __ARM_ARCH > 6 || defined (__ARM_ARCH_6K__) || defined (__ARM_ARCH_6ZK__) +# define ARCH_HAS_HARD_TP +#endif + +# ifdef __thumb2__ +# define NEGOFF_ADJ_BASE(R, OFF) add R, R, $OFF +# define NEGOFF_ADJ_BASE2(D, S, OFF) add D, S, $OFF +# define NEGOFF_OFF1(R, OFF) [R] +# define NEGOFF_OFF2(R, OFFA, OFFB) [R, $((OFFA) - (OFFB))] +# else +# define NEGOFF_ADJ_BASE(R, OFF) +# define NEGOFF_ADJ_BASE2(D, S, OFF) mov D, S +# define NEGOFF_OFF1(R, OFF) [R, $OFF] +# define NEGOFF_OFF2(R, OFFA, OFFB) [R, $OFFA] +# endif + +# ifdef ARCH_HAS_HARD_TP +/* If the cpu has cp15 available, use it. */ +# define GET_TLS(TMP) mrc p15, 0, r0, c13, c0, 3 +# else +/* At this generic level we have no tricks to pull. Call the ABI routine. */ +# define GET_TLS(TMP) \ + push { r1, r2, r3, lr }; \ + cfi_remember_state; \ + cfi_adjust_cfa_offset (16); \ + cfi_rel_offset (r1, 0); \ + cfi_rel_offset (r2, 4); \ + cfi_rel_offset (r3, 8); \ + cfi_rel_offset (lr, 12); \ + bl __aeabi_read_tp; \ + pop { r1, r2, r3, lr }; \ + cfi_restore_state +# endif /* ARCH_HAS_HARD_TP */ + + + #undef DO_CALL #if defined(__ARM_EABI__) diff --git a/libc/sysdeps/linux/common/bits/mathcalls.h b/libc/sysdeps/linux/common/bits/mathcalls.h index 84b793c96..427027355 100644 --- a/libc/sysdeps/linux/common/bits/mathcalls.h +++ b/libc/sysdeps/linux/common/bits/mathcalls.h @@ -271,7 +271,9 @@ __END_NAMESPACE_C99 #ifdef __USE_ISOC99 __BEGIN_NAMESPACE_C99 /* True gamma function. */ +# ifndef _Mdouble_is_float_ __MATHCALLI (tgamma,, (_Mdouble_)) +# endif __END_NAMESPACE_C99 #endif @@ -299,7 +301,9 @@ __MATHCALLI (rint,, (_Mdouble_ __x)) /* Return X + epsilon if X < Y, X - epsilon if X > Y. */ __MATHCALLX (nextafter,, (_Mdouble_ __x, _Mdouble_ __y), (__const__)) # if defined __USE_ISOC99 && !defined __LDBL_COMPAT +# ifndef _Mdouble_is_float_ __MATHCALLX (nexttoward,, (_Mdouble_ __x, long double __y), (__const__)) +# endif # endif /* Return the remainder of integer divison X / Y with infinite precision. */ @@ -316,11 +320,15 @@ __MATHDECLI (int,ilogb,, (_Mdouble_ __x)) #ifdef __USE_ISOC99 /* Return X times (2 to the Nth power). */ +# ifndef _Mdouble_is_float_ __MATHCALLI (scalbln,, (_Mdouble_ __x, long int __n)) +# endif /* Round X to integral value in floating-point format using current rounding direction, but do not raise inexact exception. */ +# ifndef _Mdouble_is_float_ __MATHCALLI (nearbyint,, (_Mdouble_ __x)) +# endif /* Round X to nearest integral value, rounding halfway cases away from zero. */ @@ -333,7 +341,9 @@ __MATHCALLX (trunc,, (_Mdouble_ __x), (__const__)) /* Compute remainder of X and Y and put in *QUO a value with sign of x/y and magnitude congruent `mod 2^n' to the magnitude of the integral quotient x/y, with n >= 3. */ +# ifndef _Mdouble_is_float_ __MATHCALLI (remquo,, (_Mdouble_ __x, _Mdouble_ __y, int *__quo)) +# endif /* Conversion functions. */ @@ -350,13 +360,19 @@ __MATHDECLI (long long int,llround,, (_Mdouble_ __x)) /* Return positive difference between X and Y. */ +# ifndef _Mdouble_is_float_ __MATHCALLI (fdim,, (_Mdouble_ __x, _Mdouble_ __y)) +# endif /* Return maximum numeric value from X and Y. */ +# ifndef _Mdouble_is_float_ __MATHCALLI (fmax,, (_Mdouble_ __x, _Mdouble_ __y)) +# endif /* Return minimum numeric value from X and Y. */ +# ifndef _Mdouble_is_float_ __MATHCALLI (fmin,, (_Mdouble_ __x, _Mdouble_ __y)) +# endif /* Classify given number. */ @@ -367,7 +383,9 @@ __MATHDECL_PRIV (int, signbit,, (_Mdouble_ __value), (__const__)) /* Multiply-add function computed as a ternary operation. */ +# ifndef _Mdouble_is_float_ __MATHCALLI (fma,, (_Mdouble_ __x, _Mdouble_ __y, _Mdouble_ __z)) +# endif #endif /* Use ISO C99. */ #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99 diff --git a/libc/sysdeps/linux/common/bits/uClibc_fpmax.h b/libc/sysdeps/linux/common/bits/uClibc_fpmax.h index bbea1ae9d..b7dcee1d3 100644 --- a/libc/sysdeps/linux/common/bits/uClibc_fpmax.h +++ b/libc/sysdeps/linux/common/bits/uClibc_fpmax.h @@ -68,10 +68,6 @@ typedef float __fpmax_t; #ifndef DECIMAL_DIG -#ifdef L___strtofpmax -/* Emit warning only once. */ -#warning DECIMAL_DIG is not defined! If you are using gcc, it may not be defining __STDC_VERSION__ as it should. -#endif #if !defined(FLT_RADIX) || (FLT_RADIX != 2) #error unable to compensate for missing DECIMAL_DIG! #endif diff --git a/libc/sysdeps/linux/common/fstatat64.c b/libc/sysdeps/linux/common/fstatat64.c index 015f57d13..711521a6a 100644 --- a/libc/sysdeps/linux/common/fstatat64.c +++ b/libc/sysdeps/linux/common/fstatat64.c @@ -10,10 +10,18 @@ #include <bits/wordsize.h> #include <sys/syscall.h> +#if defined __mips__ +# include <sgidefs.h> +#endif + /* 64bit ports tend to favor newfstatat() */ #if __WORDSIZE == 64 && defined __NR_newfstatat # define __NR_fstatat64 __NR_newfstatat #endif +/* mips N32 ABI use newfstatat(), too */ +#if defined __mips__ && _MIPS_SIM == _ABIN32 +# define __NR_fstatat64 __NR_newfstatat +#endif #ifdef __NR_fstatat64 # include <sys/stat.h> diff --git a/libc/sysdeps/linux/common/setreuid.c b/libc/sysdeps/linux/common/setreuid.c index a9eea6dc4..583a987c0 100644 --- a/libc/sysdeps/linux/common/setreuid.c +++ b/libc/sysdeps/linux/common/setreuid.c @@ -37,4 +37,4 @@ int setreuid(uid_t ruid, uid_t euid) } #endif -libc_hidden_def(setreuid) +libc_hidden_weak(setreuid) diff --git a/libc/sysdeps/linux/cris/sys/procfs.h b/libc/sysdeps/linux/cris/sys/procfs.h index d4ee05134..65b57ba4e 100644 --- a/libc/sysdeps/linux/cris/sys/procfs.h +++ b/libc/sysdeps/linux/cris/sys/procfs.h @@ -28,10 +28,14 @@ #include <sys/types.h> #include <sys/ucontext.h> #include <sys/user.h> -#include <asm/elf.h> __BEGIN_DECLS +typedef unsigned long elf_greg_t; + +#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t)) +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + struct elf_siginfo { int si_signo; /* Signal number. */ diff --git a/libc/sysdeps/linux/cris/sysdep.S b/libc/sysdeps/linux/cris/sysdep.S index 8f25fb722..a23bb260f 100644 --- a/libc/sysdeps/linux/cris/sysdep.S +++ b/libc/sysdeps/linux/cris/sysdep.S @@ -35,7 +35,7 @@ ENTRY (__syscall_error) /* Note that __syscall_error is only visible within this library, and no-one passes it on as a pointer, so can assume that R0 (GOT pointer) is correctly set up. */ - PLTCALL (HIDDEN_JUMPTARGET(__errno_location)) + PLTCALL (__errno_location) move [sp+],srp move.d [sp+],r11 diff --git a/libc/sysdeps/linux/m68k/sys/reg.h b/libc/sysdeps/linux/m68k/sys/reg.h deleted file mode 100644 index 984898100..000000000 --- a/libc/sysdeps/linux/m68k/sys/reg.h +++ /dev/null @@ -1,88 +0,0 @@ -/* Copyright (C) 1998 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/>. */ - -#ifndef _SYS_REG_H -#define _SYS_REG_H 1 - -/* Index into an array of 4 byte integers returned from ptrace for - location of the users' stored general purpose registers. */ - -enum -{ - PT_D1 = 0, -#define PT_D1 PT_D1 - PT_D2 = 1, -#define PT_D2 PT_D2 - PT_D3 = 2, -#define PT_D3 PT_D3 - PT_D4 = 3, -#define PT_D4 PT_D4 - PT_D5 = 4, -#define PT_D5 PT_D5 - PT_D6 = 5, -#define PT_D6 PT_D6 - PT_D7 = 6, -#define PT_D7 PT_D7 - PT_A0 = 7, -#define PT_A0 PT_A0 - PT_A1 = 8, -#define PT_A1 PT_A1 - PT_A2 = 9, -#define PT_A2 PT_A2 - PT_A3 = 10, -#define PT_A3 PT_A3 - PT_A4 = 11, -#define PT_A4 PT_A4 - PT_A5 = 12, -#define PT_A5 PT_A5 - PT_A6 = 13, -#define PT_A6 PT_A6 - PT_D0 = 14, -#define PT_D0 PT_D0 - PT_USP = 15, -#define PT_USP PT_USP - PT_ORIG_D0 = 16, -#define PT_ORIG_D0 PT_ORIG_D0 - PT_SR = 17, -#define PT_SR PT_SR - PT_PC = 18, -#define PT_PC PT_PC - PT_FP0 = 21, -#define PT_FP0 PT_FP0 - PT_FP1 = 24, -#define PT_FP1 PT_FP1 - PT_FP2 = 27, -#define PT_FP2 PT_FP2 - PT_FP3 = 30, -#define PT_FP3 PT_FP3 - PT_FP4 = 33, -#define PT_FP4 PT_FP4 - PT_FP5 = 36, -#define PT_FP5 PT_FP5 - PT_FP6 = 39, -#define PT_FP6 PT_FP6 - PT_FP7 = 42, -#define PT_FP7 PT_FP7 - PT_FPCR = 45, -#define PT_FPCR PT_FPCR - PT_FPSR = 46, -#define PT_FPSR PT_FPSR - PT_FPIAR = 47 -#define PT_FPIAR PT_FPIAR -}; - -#endif /* _SYS_REG_H */ diff --git a/libc/sysdeps/linux/microblaze/bits/uClibc_page.h b/libc/sysdeps/linux/microblaze/bits/uClibc_page.h index 8069e6afb..9335d8eb7 100644 --- a/libc/sysdeps/linux/microblaze/bits/uClibc_page.h +++ b/libc/sysdeps/linux/microblaze/bits/uClibc_page.h @@ -20,7 +20,7 @@ #ifndef _UCLIBC_PAGE_H #define _UCLIBC_PAGE_H -#include <linux/autoconf.h> +#include <generated/autoconf.h> #if defined(CONFIG_MICROBLAZE_32K_PAGES) #define PAGE_SHIFT 15 diff --git a/libc/sysdeps/linux/xtensa/Makefile.arch b/libc/sysdeps/linux/xtensa/Makefile.arch index 277a1e325..b9b6b87d5 100644 --- a/libc/sysdeps/linux/xtensa/Makefile.arch +++ b/libc/sysdeps/linux/xtensa/Makefile.arch @@ -5,7 +5,10 @@ # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. # -CSRC-y := brk.c fork.c sigaction.c __syscall_error.c +CSRC-y := brk.c sigaction.c __syscall_error.c SSRC-y := bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S \ sigrestorer.S syscall.S mmap.S windowspill.S __longjmp.S vfork.S + +CSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += fork.c +SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += clone.S diff --git a/libc/sysdeps/linux/xtensa/clone.S b/libc/sysdeps/linux/xtensa/clone.S index aa79aa736..34d68a875 100644 --- a/libc/sysdeps/linux/xtensa/clone.S +++ b/libc/sysdeps/linux/xtensa/clone.S @@ -1,34 +1,38 @@ -/* Copyright (C) 2001, 2005, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2001, 2005 Free Software Foundation, Inc. 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. + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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. + Library 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/>. */ + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ /* clone is even more special than fork as it mucks with stacks - and invokes a function in the right context after it's all over. */ + and invokes a function in the right context after its all over. */ -#include "sysdep.h" -#include <sys/syscall.h> +#include <features.h> +#include <sysdep.h> #define _ERRNO_H 1 #include <bits/errno.h> +#ifdef RESET_PID +#include <tls.h> +#endif +#define __ASSEMBLY__ +#include <linux/sched.h> -/* int clone (a2 = int (*fn)(void *arg), - a3 = void *child_stack, - a4 = int flags, - a5 = void *arg, - a6 = pid_t *ptid, - a7 = struct user_desc *tls, - 16(sp) = pid_t *ctid) */ +/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg, + a2 a3 a4 a5 + pid_t *ptid, struct user_desc *tls, pid_t *ctid) + a6 a7 16(sp) +*/ .text ENTRY (__clone) @@ -39,7 +43,7 @@ ENTRY (__clone) /* a2 and a3 are candidates for destruction by system-call return parameters. We don't need the stack pointer after the system - call. We trust that the kernel will preserve a7, a9, and a6. */ + call. We trust that the kernel will preserve a6, a7 and a9. */ mov a9, a5 /* save function argument */ mov a5, a7 @@ -48,19 +52,18 @@ ENTRY (__clone) mov a6, a4 mov a4, a8 l32i a8, a1, 16 /* child_tid */ - movi a2, SYS_ify (clone) - - /* syscall (a2 = NR_clone, - a6 = clone_flags, - a3 = usp, - a4 = parent_tid, - a5 = child_tls, - a8 = child_tid) */ + movi a2, SYS_ify(clone) + + /* syscall(NR_clone,clone_flags, usp, parent_tid, child_tls, child_tid) + a2 a6 a3 a4 a5 a8 + */ + syscall bltz a2, SYSCALL_ERROR_LABEL beqz a2, .Lthread_start - /* Fall through for parent. */ + /* fall through for parent */ + .Lpseudo_end: retw @@ -69,32 +72,38 @@ ENTRY (__clone) j SYSCALL_ERROR_LABEL .Lthread_start: - /* Start child thread. */ - movi a0, 0 /* terminate the stack frame */ + +#if CLONE_THREAD != 0x00010000 || CLONE_VM != 0x00000100 +# error invalid values for CLONE_THREAD or CLONE_VM +#endif #ifdef RESET_PID - /* Check and see if we need to reset the PID. */ - bbsi.l a6, 16, 1f /* CLONE_THREAD = 0x00010000 */ + bbsi.l a6, 16, .Lskip_restore_pid /* CLONE_THREAD = 0x00010000 */ movi a2, -1 - bbsi.l a6, 8, 2f /* CLONE_VM = 0x00000100 */ - movi a2, SYS_ify (getpid) + bbsi a6, 8, .Lgotpid /* CLONE_VM = 0x00000100 */ + movi a2, SYS_ify(getpid) syscall -2: rur a3, THREADPTR - movi a4, PID_OFFSET - add a4, a4, a3 - s32i a2, a4, 0 - movi a4, TID_OFFSET - add a4, a4, a3 - s32i a2, a3, 0 -1: -#endif /* RESET_PID */ - +.Lgotpid: + rur a3, threadptr + movi a0, TLS_PRE_TCB_SIZE + sub a3, a3, a0 + s32i a2, a3, PID + s32i a2, a3, TID +.Lskip_restore_pid: +#endif + + /* start child thread */ + movi a0, 0 /* terminate the stack frame */ mov a6, a9 /* load up the 'arg' parameter */ callx4 a7 /* call the user's function */ /* Call _exit. Note that any return parameter from the user's - function in a6 is seen as inputs to _exit. */ - movi a2, JUMPTARGET(_exit) + function in a6 is seen as inputs to _exit. */ +#ifdef PIC + movi a2, _exit@PLT +#else + movi a2, _exit +#endif callx4 a2 PSEUDO_END (__clone) diff --git a/libc/sysdeps/linux/xtensa/fork.c b/libc/sysdeps/linux/xtensa/fork.c index e9b681c67..4e4f937a0 100644 --- a/libc/sysdeps/linux/xtensa/fork.c +++ b/libc/sysdeps/linux/xtensa/fork.c @@ -20,6 +20,10 @@ pid_t fork(void) { return (pid_t) INLINE_SYSCALL(clone, 2, SIGCHLD, 0); } -lt_strong_alias(fork) -lt_libc_hidden(fork) +# ifdef __UCLIBC_HAS_THREADS__ +strong_alias(fork,__libc_fork) +libc_hidden_weak(fork) +# else +libc_hidden_def(fork) +# endif #endif diff --git a/libc/sysdeps/linux/xtensa/jmpbuf-unwind.h b/libc/sysdeps/linux/xtensa/jmpbuf-unwind.h index 41f81dbad..4516d9398 100644 --- a/libc/sysdeps/linux/xtensa/jmpbuf-unwind.h +++ b/libc/sysdeps/linux/xtensa/jmpbuf-unwind.h @@ -1,25 +1,23 @@ -/* Copyright (C) 1997, 1998, 2007 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/>. */ - -/* Test if longjmp to JMPBUF would unwind the frame containing a local - variable at ADDRESS. */ - +/* + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ #include <setjmp.h> #include <jmpbuf-offsets.h> +/* Test if longjmp to JMPBUF would unwind the frame + containing a local variable at ADDRESS. */ #define _JMPBUF_UNWINDS(jmpbuf, address) \ ((void *) (address) < (void *) (jmpbuf)[JB_SP]) + +#ifdef __UCLIBC_HAS_THREADS_NATIVE__ +#include <stdint.h> +#include <unwind.h> + +#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj)) +#endif diff --git a/libc/sysdeps/linux/xtensa/sys/ptrace.h b/libc/sysdeps/linux/xtensa/sys/ptrace.h |