# define INTERNAL_SYSCALL_NCS(number, nr, args...) \
INTERNAL_SYSCALL_RAW (number, nr, args)
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* __ASSEMBLER__ */
/* Pointer mangling is supported for AArch64. */
+++ /dev/null
-/* Copyright (C) 1993-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Brendan Kehoe <brendan@zen.org>, 1993.
-
- 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
- <https://www.gnu.org/licenses/>. */
-
-/* __brk is a special syscall under Linux since it never returns an
- error. Instead, the error condition is indicated by returning the old
- break value (instead of the new, requested one). */
-
-#include <sysdep.h>
-#include <errno.h>
-
-#ifdef PIC
-.section .bss
- .align 3
- .globl __curbrk
-__curbrk: .skip 8
- .type __curbrk,@object
- .size __curbrk,8
-#else
-.comm __curbrk, 8
-#endif
-
- .text
- .align 4
- .globl __brk
- .ent __brk
- .usepv __brk, std
-
- cfi_startproc
-__brk:
- ldgp gp, 0(t12)
- subq sp, 16, sp
- cfi_adjust_cfa_offset (16)
-#ifdef PROF
- .set noat
- lda AT, _mcount
- jsr AT, (AT), _mcount
- .set at
-#endif
-
- /* Save the requested brk across the system call. */
- stq a0, 0(sp)
-
- ldiq v0, __NR_brk
- call_pal PAL_callsys
-
- ldq a0, 0(sp)
- addq sp, 16, sp
- cfi_adjust_cfa_offset (-16)
-
- /* Be prepared for an OSF-style brk. */
- bne a3, SYSCALL_ERROR_LABEL
- beq v0, $ok
-
- /* Correctly handle the brk(0) query case. */
- cmoveq a0, v0, a0
- xor a0, v0, t0
- lda v0, ENOMEM
- bne t0, SYSCALL_ERROR_LABEL
-
- /* Update __curbrk and return cleanly. */
- lda v0, 0
-$ok: stq a0, __curbrk
- ret
-
-PSEUDO_END(__brk)
- cfi_endproc
-
-weak_alias (__brk, brk)
-/* brk system call for Linux/ARM.
- Copyright (C) 1995-2020 Free Software Foundation, Inc.
+/* Change data segment size. Linux/Alpha.
+ Copyright (C) 2020 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
#include <unistd.h>
#include <sysdep.h>
-/* This must be initialized data because commons can't have aliases. */
void *__curbrk = 0;
int
__brk (void *addr)
{
- void *newbrk;
-
- __curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr);
-
- if (newbrk < addr)
+ /* Alpha brk returns -ENOMEM in case of failure. */
+ __curbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
+ if ((unsigned long) __curbrk == -ENOMEM)
{
__set_errno (ENOMEM);
return -1;
+++ /dev/null
-#include <brk.S>
# define PTR_MANGLE(var) (void) (var)
# define PTR_DEMANGLE(var) (void) (var)
+# undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+# define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* !__ASSEMBLER__ */
#endif /* linux/arc/sysdep.h */
-/* Copyright (C) 2011-2020 Free Software Foundation, Inc.
+/* Change data segment. Linux generic version.
+ Copyright (C) 2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
/* This must be initialized data because commons can't have aliases. */
void *__curbrk = 0;
+#if HAVE_INTERNAL_BRK_ADDR_SYMBOL
/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
to work around different old braindamage in the old Linux ELF dynamic
linker. */
weak_alias (__curbrk, ___brk_addr)
+#endif
int
__brk (void *addr)
# define INTERNAL_SYSCALL_NCS(number, nr, args...) \
INTERNAL_SYSCALL_RAW##nr (number, args)
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* __ASSEMBLER__ */
/* Pointer mangling support. */
+++ /dev/null
-/* We can use the normal code but we also know the __curbrk is not exported
- from ld.so. */
-extern void *__curbrk attribute_hidden;
-
-#include <brk.c>
+++ /dev/null
-/* brk system call for Linux/HPPA.
- Copyright (C) 1995-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-/* This must be initialized data because commons can't have aliases. */
-void *__curbrk = 0;
-
-int
-__brk (void *addr)
-{
- void *newbrk;
-
- __curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr);
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
# define I386_USE_SYSENTER 0
#endif
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-/* This must be initialized data because commons can't have aliases. */
-void *__curbrk = 0;
-
-/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
- to work around different old braindamage in the old Linux ELF dynamic
- linker. */
-weak_alias (__curbrk, ___brk_addr)
-
-int
-__brk (void *addr)
-{
- void *newbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
- __curbrk = newbrk;
- if (newbrk < addr)
- return INLINE_SYSCALL_ERROR_RETURN_VALUE (ENOMEM);
- return 0;
-}
-weak_alias (__brk, brk)
+#include <sysdeps/unix/sysv/linux/brk.c>
# define HAVE_TIME_VSYSCALL "__vdso_time"
# define HAVE_CLOCK_GETRES_VSYSCALL "__vdso_clock_getres"
+# undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+# define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
/* Define a macro which expands inline into the wrapper code for a system
call. This use is for internal calls that do not need to handle errors
normally. It will never touch errno. This returns just what the kernel
+++ /dev/null
-/* brk system call for Linux/ia64
- Copyright (C) 1999-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Written by Stéphane Eranian <eranian@hpl.hp.com> and
- Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
-
- 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
- <https://www.gnu.org/licenses/>. */
-
-#include <sysdep.h>
-
-#include <asm/errno.h>
-
- .global __curbrk
- .type __curbrk,@object
- .size __curbrk,8
- .data
- .align 8
-__curbrk:
- data8 0
-
-weak_alias (__curbrk, ___brk_addr)
-
-LEAF(__brk)
- .regstk 1, 0, 0, 0
- DO_CALL(__NR_brk)
- cmp.ltu p6, p0 = ret0, in0
- addl r9 = @ltoff(__curbrk), gp
- ;;
- ld8 r9 = [r9]
-(p6) mov ret0 = ENOMEM
-(p6) br.cond.spnt.few __syscall_error
- ;;
- st8 [r9] = ret0
- mov ret0 = 0
- ret
-END(__brk)
-
-weak_alias (__brk, brk)
+++ /dev/null
-#include <brk.S>
#else /* not __ASSEMBLER__ */
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#define BREAK_INSN_1(num) "break " #num ";;\n\t"
#define BREAK_INSN(num) BREAK_INSN_1(num)
+++ /dev/null
-/* brk system call for Linux/m68k.
- Copyright (C) 1996-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-void *__curbrk = 0;
-
-/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
- to work around different old braindamage in the old Linux/x86 ELF
- dynamic linker. Sigh. */
-weak_alias (__curbrk, ___brk_addr)
-
-int
-__brk (void *addr)
-{
- void *newbrk;
-
- newbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
- __curbrk = newbrk;
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
LOAD_REGS_5
#define ASM_ARGS_6 ASM_ARGS_5, "a" (_a0)
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* not __ASSEMBLER__ */
/* Pointer mangling is not yet supported for M68K. */
+++ /dev/null
-/* Copyright (C) 2011-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-/* This must be initialized data because commons can't have aliases. */
-void *__curbrk = 0;
-
-/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
- to work around different old braindamage in the old Linux ELF dynamic
- linker. */
-weak_alias (__curbrk, ___brk_addr)
-
-int
-__brk (void *addr)
-{
- __curbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
- if (__curbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
# define SINGLE_THREAD_BY_GLOBAL 1
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* not __ASSEMBLER__ */
#endif /* _LINUX_MICROBLAZE_SYSDEP_H */
+++ /dev/null
-/* brk system call for Linux/MIPS.
- Copyright (C) 2000-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-void *__curbrk = 0;
-
-/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
- to work around different old braindamage in the old Linux/x86 ELF
- dynamic linker. Sigh. */
-weak_alias (__curbrk, ___brk_addr)
-
-int
-__brk (void *addr)
-{
- void *newbrk;
-
- newbrk = (void *) INTERNAL_SYSCALL_CALL (brk, addr);
- __curbrk = newbrk;
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
#else /* ! __ASSEMBLER__ */
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
/* Note that the original Linux syscall restart convention required the
instruction immediately preceding SYSCALL to initialize $v0 with the
syscall number. Then if a restart triggered, $v0 would have been
#else /* ! __ASSEMBLER__ */
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#if _MIPS_SIM == _ABIN32
/* Convert X to a long long, without losing any bits if it is one
already or warning if it is a 32-bit pointer. */
#define __SYSCALL_CLOBBERS "memory"
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* __ASSEMBLER__ */
/* Pointer mangling support. */
+++ /dev/null
-#include <brk.S>
+++ /dev/null
-/* brk system call for Linux/ppc.
- Copyright (C) 1995-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <sysdep.h>
-#define _ERRNO_H 1
-#include <bits/errno.h>
-
- .comm __curbrk,4,4
- .section ".text"
-ENTRY (__brk)
- mflr r0
- stwu r1,-16(r1)
- cfi_adjust_cfa_offset (16)
- stw r3,8(r1)
- stw r0,20(r1)
- cfi_offset (lr, 4)
- DO_CALL(SYS_ify(brk))
- lwz r6,8(r1)
-#ifdef PIC
- SETUP_GOT_ACCESS(r5,got_label)
- addis r5,r5,__curbrk-got_label@ha
- stw r3,__curbrk-got_label@l(r5)
-#else
- lis r4,__curbrk@ha
- stw r3,__curbrk@l(r4)
-#endif
- lwz r0,20(r1)
- cmplw r6,r3
- addi r1,r1,16
- mtlr r0
- li r3,0
- blelr+
- li r3,ENOMEM
- b __syscall_error@local
-END (__brk)
-
-weak_alias (__brk, brk)
+++ /dev/null
-/* brk system call for Linux. PowerPC64 version.
- Copyright (C) 1995-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <sysdep.h>
-#define _ERRNO_H 1
-#include <bits/errno.h>
-
- .comm __curbrk,8,8
- .section ".toc","aw"
-.LC__curbrk:
- .tc __curbrk[TC],__curbrk
- .section ".text"
-ENTRY (__brk)
- CALL_MCOUNT 1
-
- std r3,-8(r1)
- DO_CALL(SYS_ify(brk))
- ld r6,-8(r1)
- ld r5,.LC__curbrk@toc(r2)
- std r3,0(r5)
- cmpld r6,r3
- li r3,0
- blelr+
- li r3,ENOMEM
- TAIL_CALL_SYSCALL_ERROR
-END (__brk)
-
-weak_alias (__brk, brk)
RV64). */
# define HAVE_GETCPU_VSYSCALL "__vdso_getcpu"
+# undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+# define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
# define INTERNAL_SYSCALL(name, nr, args...) \
internal_syscall##nr (SYS_ify (name), args)
+++ /dev/null
-/*
- Copyright (C) 2000-2020 Free Software Foundation, Inc.
- Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
- 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-void *__curbrk = 0;
-
-/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
- to work around different old braindamage in the old Linux/x86 ELF
- dynamic linker. Sigh. */
-weak_alias (__curbrk, ___brk_addr)
-
-int
-__brk (void *addr)
-{
- void *newbrk;
-
- {
- register void *__addr __asm__("2") = addr;
-
- __asm__ ("svc %b1\n\t" /* call sys_brk */
- : "=d" (__addr)
- : "I" (SYS_ify(brk)), "r" (__addr)
- : "cc", "memory" );
- newbrk = __addr;
- }
- __curbrk = newbrk;
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
#define ret_ERRVAL \
br 14
+#else
+
+# undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+# define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* __ASSEMBLER__ */
/* Pointer mangling support. */
#define ret_ERRVAL \
br 14
+#else
+
+# undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+# define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* __ASSEMBLER__ */
/* Pointer mangling support. */
+++ /dev/null
-/* brk system call for Linux/SH.
- Copyright (C) 1999-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-/* This must be initialized data because commons can't have aliases. */
-void *__curbrk = 0;
-
-int
-__brk (void *addr)
-{
- void *newbrk;
- register long r3 asm ("%r3") = SYS_ify (brk);
- register long r4 asm ("%r4") = (long)addr;
-
- asm volatile ("trapa #0x11\n\t" SYSCALL_INST_PAD
- : "=z"(newbrk)
- : "r" (r3), "r" (r4));
-
- __curbrk = newbrk;
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
+++ /dev/null
-/* brk system call for Linux/SPARC.
- Copyright (C) 1995-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx)
-
- 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-/* This must be initialized data because commons can't have aliases. */
-void *__curbrk = 0;
-
-/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
- to work around different old braindamage in the old Linux ELF dynamic
- linker. */
-weak_alias (__curbrk, ___brk_addr)
-
-int
-__brk (void *addr)
-{
- void *newbrk;
-
- {
- register void *o0 __asm__("%o0") = addr;
- register int g1 __asm__("%g1") = __NR_brk;
- __asm ("t 0x10" : "=r"(o0) : "r"(g1), "0"(o0) : "cc");
- newbrk = o0;
- }
-
- __curbrk = newbrk;
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
"cc", "memory"
+#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
+
#endif /* __ASSEMBLER__ */
/* Pointer mangling support. */
+++ /dev/null
-/* Copyright (C) 1997-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
-
- 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
- <https://www.gnu.org/licenses/>. */
-
-/* __brk is a special syscall under Linux since it never returns an
- error. Instead, the error condition is indicated by returning the old
- break value (instead of the new, requested one). */
-
-#include <sysdep.h>
-#include <errno.h>
-
-#ifdef PIC
-.section .bss
- .align 8
- .globl __curbrk
-__curbrk: .skip 8
- .type __curbrk,@object
- .size __curbrk,8
-#else
-.common __curbrk, 8, 8
-#endif
-
- .text
-ENTRY (__brk)
- save %sp, -192, %sp
- cfi_def_cfa_register(%fp)
- cfi_window_save
- cfi_register(%o7, %i7)
-#ifdef PIC
- SETUP_PIC_REG(l7)
-#endif
-
- LOADSYSCALL(brk)
- mov %i0, %o0
-
- ta 0x6d
-
- /* All the ways we can fail... */
- bcs,pn %xcc, .Lerr1
- nop
- brz,pt %i0, .Lok
- subcc %i0, %o0, %g0
- bne,pn %xcc, .Lerr0
- nop
-
- /* Update __curbrk and return cleanly. */
-.Lok:
-#ifndef PIC
- sethi %hi(__curbrk), %g1
- or %g1, %lo(__curbrk), %g1
-#else
- sethi %gdop_hix22(__curbrk), %g1
- xor %g1, %gdop_lox10(__curbrk), %g1
- ldx [%l7 + %g1], %g1, %gdop(__curbrk)
-#endif
- stx %o0, [%g1]
- mov %g0, %i0
-
- /* Don't use "ret" cause the preprocessor will eat it. */
- jmpl %i7+8, %g0
- restore
-
- /* What a horrible way to die. */
-.Lerr0: set ENOMEM, %o0
-.Lerr1:
-#ifndef _LIBC_REENTRANT
-#ifndef PIC
- sethi %hi(errno), %g1
- or %g1, %lo(errno), %g1
-#else
- sethi %gdop_hix22(errno), %g1
- xor %g1, %gdop_lox10(errno), %g1
- ldx [%l7 + %g1], %g1, %gdop(errno)
-#endif
- st %o0, [%g1]
-#else
-#if IS_IN (libc)
- call HIDDEN_JUMPTARGET(__errno_location)
-#else
- call __errno_location
-#endif
- mov %o0,%l1
- st %l1, [%o0]
-#endif
- sub %g0, 1, %i0
- jmpl %i7+8, %g0
- restore
-END (__brk)
-
-weak_alias (__brk, brk)
+++ /dev/null
-#include <brk.S>
it missing due the usage of a old generic version without it). */
#define HAVE_INTERNAL_SEND_SYMBOL 1
+/* Export the ___brk_addr symbol on brk.c implementation (some ABIs export
+ it due and old crtstuff.c code). */
+#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 0
+
#endif /* _SYSDEP_LINUX_H */
+++ /dev/null
-/* brk system call for Linux/x86_64.
- Copyright (C) 1995-2020 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
- <https://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <unistd.h>
-#include <sysdep.h>
-
-/* This must be initialized data because commons can't have aliases. */
-void *__curbrk = 0;
-
-int
-__brk (void *addr)
-{
- void *newbrk;
-
- __curbrk = newbrk = (void *) INLINE_SYSCALL (brk, 1, addr);
-
- if (newbrk < addr)
- {
- __set_errno (ENOMEM);
- return -1;
- }
-
- return 0;
-}
-weak_alias (__brk, brk)
projects / thirdparty / glibc.git / commitdiff
