scc

commit e4dd267e90a51c92c686028f118a0fc835e72620
parent 97caea2d7a7e55453218c4457a18f4c692b2ac52
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Sat, 16 May 2020 20:10:11 +0200

libc: Fix _getheap() for linux

Linux is adding randomization to brk() calls, which means that
it breaksall the software using brk() that was also using the
end symbol. This patch modifies _getheap() to use brk(0) to
obtain the base of the heap.

Diffstat:
M
src/libc/arch/amd64/linux/_getheap.c
 | 
2
+-
M
src/libc/arch/amd64/netbsd/crt.s
 | 
2
+-
M
src/libc/arch/amd64/openbsd/crt.s
 | 
2
+-
M
src/libc/arch/arm32/linux/_getheap.c
 | 
2
+-
M
src/libc/arch/arm64/linux/_getheap.c
 | 
2
+-
M
src/libc/arch/i386/linux/_getheap.c
 | 
2
+-
A
src/libc/arch/linux/_getheap.c
 | 
10
++++++++++
R
src/libc/arch/crt-netbsd.s -> src/libc/arch/netbsd/crt.s
 | 
0

R
src/libc/arch/crt-openbsd.s -> src/libc/arch/openbsd/crt.s
 | 
0

M
src/libc/arch/ppc32/linux/_getheap.c
 | 
2
+-

10 files changed, 17 insertions(+), 7 deletions(-)
diff --git a/src/libc/arch/amd64/linux/_getheap.c b/src/libc/arch/amd64/linux/_getheap.c
@@ -1 +1 @@
-#include "../../posix/_getheap.c"
+#include "../../linux/_getheap.c"
diff --git a/src/libc/arch/amd64/netbsd/crt.s b/src/libc/arch/amd64/netbsd/crt.s
@@ -1,2 +1,2 @@
-	.include	"../../crt-netbsd.s"
+	.include	"../../netbsd/crt.s"
 	.include	"../crt-posix.s"
diff --git a/src/libc/arch/amd64/openbsd/crt.s b/src/libc/arch/amd64/openbsd/crt.s
@@ -1,2 +1,2 @@
-	.include	"../../crt-openbsd.s"
+	.include	"../../openbsd/crt.s"
 	.include	"../crt-posix.s"
diff --git a/src/libc/arch/arm32/linux/_getheap.c b/src/libc/arch/arm32/linux/_getheap.c
@@ -1 +1 @@
-#include "../../posix/_getheap.c"
+#include "../../linux/_getheap.c"
diff --git a/src/libc/arch/arm64/linux/_getheap.c b/src/libc/arch/arm64/linux/_getheap.c
@@ -1 +1 @@
-#include "../../posix/_getheap.c"
+#include "../../linux/_getheap.c"
diff --git a/src/libc/arch/i386/linux/_getheap.c b/src/libc/arch/i386/linux/_getheap.c
@@ -1 +1 @@
-#include "../../posix/_getheap.c"
+#include "../../linux/_getheap.c"
diff --git a/src/libc/arch/linux/_getheap.c b/src/libc/arch/linux/_getheap.c
@@ -0,0 +1,10 @@
+#include <stddef.h>
+
+#include "../../libc.h"
+#include "../../syscall.h"
+
+void *
+_getheap(void)
+{
+	return _brk(0);
+}
diff --git a/src/libc/arch/crt-netbsd.s b/src/libc/arch/netbsd/crt.s
diff --git a/src/libc/arch/crt-openbsd.s b/src/libc/arch/openbsd/crt.s
diff --git a/src/libc/arch/ppc32/linux/_getheap.c b/src/libc/arch/ppc32/linux/_getheap.c
@@ -1 +1 @@
-#include "../../posix/_getheap.c"
+#include "../../linux/_getheap.c"