Linux: Introduce __brk_call for invoking the brk system call

Alpha and sparc can now use the generic implementation.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 5 insertions, 28 deletions

diff --git a/sysdeps/unix/sysv/linux/sparc/brk.c b/sysdeps/unix/sysv/linux/sparc/brk_call.h
index c5c1ee0282..59ce521660 100644
--- a/sysdeps/unix/sysv/linux/sparc/brk.c
+++ b/sysdeps/unix/sysv/linux/sparc/brk_call.h
@@ -1,5 +1,5 @@
-/* Change data segment.  Linux SPARC version.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+/* Invoke the brk system call.  Sparc version.
+   Copyright (C) 2022 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
@@ -16,28 +16,14 @@
    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;
-
-#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
-
 #ifdef __arch64__
 # define SYSCALL_NUM "0x6d"
 #else
 # define SYSCALL_NUM "0x10"
 #endif
 
-int
-__brk (void *addr)
+static inline void *
+__brk_call (void *addr)
 {
   register long int g1 asm ("g1") = __NR_brk;
   register long int o0 asm ("o0") = (long int) addr;
@@ -45,14 +31,5 @@ __brk (void *addr)
 		: "=r"(o0)
 		: "r"(g1), "0"(o0)
 		: "cc");
-  __curbrk = (void *) o0;
-
-  if (__curbrk < addr)
-    {
-      __set_errno (ENOMEM);
-      return -1;
-    }
-
-  return 0;
+  return (void *) o0;
 }
-weak_alias (__brk, brk)