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, 10 insertions, 20 deletions

diff --git a/sysdeps/unix/sysv/linux/alpha/brk.c b/sysdeps/unix/sysv/linux/alpha/brk_call.h
index 32082a4..b8088cf 100644
--- a/sysdeps/unix/sysv/linux/alpha/brk.c
+++ b/sysdeps/unix/sysv/linux/alpha/brk_call.h
@@ -1,5 +1,5 @@
-/* Change data segment size.  Linux/Alpha.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+/* Invoke the brk system call.  Alpha 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
@@ -16,23 +16,13 @@
    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;
-
-int
-__brk (void *addr)
+static inline void *
+__brk_call (void *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;
-    }
-
-  return 0;
+  unsigned long int result = INTERNAL_SYSCALL_CALL (brk, addr);
+  if (result == -ENOMEM)
+    /* Mimic the default error reporting behavior.  */
+    return addr;
+  else
+    return (void *) result;
 }
-weak_alias (__brk, brk)