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authorFlorian Weimer <fweimer@redhat.com>2022-05-16 18:41:43 +0200
committerFlorian Weimer <fweimer@redhat.com>2022-05-16 18:41:52 +0200
commitb57ab258c1140bc45464b4b9908713e3e0ee35aa (patch)
tree12fbebff5ad78dfa98c9d59526f0bd8e36c702f1 /sysdeps/unix/sysv/linux/alpha
parent21244c70c24db4b3bd7a2169a7a48f637cad5930 (diff)
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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>
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha')
-rw-r--r--sysdeps/unix/sysv/linux/alpha/brk_call.h (renamed from sysdeps/unix/sysv/linux/alpha/brk.c)30
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 32082a4fae..b8088cf13f 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)