From 76d80593426f5f77a51dcf694786576a37f3b208 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Wed, 6 Jul 2005 22:40:33 +0000
Subject: Peter S. Mazinger writes: use the __syscall_error.c trick to handle
 setting errno

---
 libc/sysdeps/linux/i386/mmap64.S | 30 ++++++++----------------------
 1 file changed, 8 insertions(+), 22 deletions(-)

(limited to 'libc/sysdeps/linux/i386/mmap64.S')

diff --git a/libc/sysdeps/linux/i386/mmap64.S b/libc/sysdeps/linux/i386/mmap64.S
index 42d1bb69e..dde3b9ae1 100644
--- a/libc/sysdeps/linux/i386/mmap64.S
+++ b/libc/sysdeps/linux/i386/mmap64.S
@@ -65,6 +65,7 @@ mmap64:
 	movl FD(%esp), %edi
 
 	movl $__NR_mmap2, %eax	/* System call number in %eax.  */
+	/* Do the system call trap.  */
 	int $0x80
 
 	/* Restore registers.  */
@@ -75,7 +76,8 @@ mmap64:
 
 	/* If 0 > %eax > -4096 there was an error.  */
 	cmpl $-4095,%eax
-	jae __syscall_error
+	ja __error
+	/* Successful; return the syscall's value.  */
 	ret
 
 	/* This means the offset value is too large.  */
@@ -85,27 +87,11 @@ L_einval:
 	popl %ebx
 	popl %ebp
 	movl $-EINVAL, %eax
-	jmp __syscall_error
-
-
-__syscall_error:
-	negl    %eax
-	pushl   %eax
-#ifdef __PIC__
-	call .Lthere
-.Lthere:
-	popl	%ebx
-	addl	$_GLOBAL_OFFSET_TABLE_+[.- .Lthere  ], %ebx
-	call    __errno_location@PLT
-#else
-	call	__errno_location
-#endif
-	popl	%ecx
-	movl	%ecx, (%eax)
-	xorl	%eax, %eax
-	decl	%eax
+	jmp __error
+
+__error:
+	call	__syscall_error
 
-.Lsize:
-.size mmap64,.Lsize-mmap64
+.size mmap64,.-mmap64
 
 #endif
-- 
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