From 9c2e764253356b5207267e64acbfb155713a3370 Mon Sep 17 00:00:00 2001
From: Geoffrey Keating <geoffk@geoffk.org>
Date: Fri, 1 Feb 2002 18:00:41 +0000
Subject: In ld/ChangeLog: 	* scripttempl/xstormy16.sc: Don't allocate
 extra space for the 	stack. In libgloss/ChangeLog: 	*
 xstormy16/Makefile.in (SIM_OBJS): Remove sbrk.o, add 	sim_malloc_start.o. 
 * xstormy16/eva_app.ld: Add __malloc_start. 	* xstormy16/sbrk.c: Remove. 
 * xstormy16/sim_malloc_start.s: New file. 	* xstormy16/sim_high.ld: Make
 the stack start immediately at the 	end of the program. In
 newlib/ChangeLog: 	* configure.host (xstormy16): Don't use the generic
 malloc. 	* libc/machine/xstormy16/Makefile.am: Build tiny-malloc. 
 * libc/machine/xstormy16/Makefile.in: Regenerate. 	*
 libc/machine/xstormy16/mallocr.c: New file. 	*
 libc/machine/xstormy16/tiny-malloc.c: New file.

---
 libgloss/xstormy16/Makefile.in        |  2 +-
 libgloss/xstormy16/eva_app.ld         |  1 +
 libgloss/xstormy16/sbrk.c             | 55 -----------------------------------
 libgloss/xstormy16/sim_high.ld        |  1 -
 libgloss/xstormy16/sim_malloc_start.s |  5 ++++
 5 files changed, 7 insertions(+), 57 deletions(-)
 delete mode 100644 libgloss/xstormy16/sbrk.c
 create mode 100644 libgloss/xstormy16/sim_malloc_start.s

(limited to 'libgloss/xstormy16')

diff --git a/libgloss/xstormy16/Makefile.in b/libgloss/xstormy16/Makefile.in
index 827a6f2f8..a4d50d963 100644
--- a/libgloss/xstormy16/Makefile.in
+++ b/libgloss/xstormy16/Makefile.in
@@ -48,7 +48,7 @@ CRT		= crt0.o crti.o crtn.o
 SIM_SCRIPTS	= sim_high.ld
 SIM_LDFLAGS	=
 SIM_BSP		= libsim.a
-SIM_OBJS	= syscalls.o sbrk.o
+SIM_OBJS	= syscalls.o sim_malloc_start.o
 
 # Here is stuff for building apps for GDB on the EVA board
 EVA_APP_BSP     = libeva_app.a
diff --git a/libgloss/xstormy16/eva_app.ld b/libgloss/xstormy16/eva_app.ld
index b95526db9..cf72dca7b 100644
--- a/libgloss/xstormy16/eva_app.ld
+++ b/libgloss/xstormy16/eva_app.ld
@@ -13,6 +13,7 @@ MEMORY
 SECTIONS
 {
   __stack = 2 ;
+  __malloc_start = 0x800;
   .data    :
   {
     *(.data)
diff --git a/libgloss/xstormy16/sbrk.c b/libgloss/xstormy16/sbrk.c
deleted file mode 100644
index cb18d68bf..000000000
--- a/libgloss/xstormy16/sbrk.c
+++ /dev/null
@@ -1,55 +0,0 @@
-/* sbrk.c -- allocate memory dynamically.
- * 
- * Copyright (c) 1995,1996 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- */
-#include <errno.h>
-#include "glue.h"
-
-/* just in case, most boards have at least some memory */
-#ifndef RAMSIZE
-#  define RAMSIZE             (caddr_t)0x100000
-#endif
-
-char *heap_ptr;
-
-/*
- * sbrk -- changes heap size size. Get nbytes more
- *         RAM. We just increment a pointer in what's
- *         left of memory on the board.
- */
-char *
-_sbrk (nbytes)
-     int nbytes;
-{
-  char        *base;
-
-  if (!heap_ptr)
-    heap_ptr = (char *)&_end;
-  base = heap_ptr;
-  heap_ptr += nbytes;
-
-  return base;
-/* FIXME: We really want to make sure we don't run out of RAM, but this
- *       isn't very portable.
- */
-#if 0
-  if ((RAMSIZE - heap_ptr - nbytes) >= 0) {
-    base = heap_ptr;
-    heap_ptr += nbytes;
-    return (base);
-  } else {
-    errno = ENOMEM;
-    return ((char *)-1);
-  }
-#endif
-}
diff --git a/libgloss/xstormy16/sim_high.ld b/libgloss/xstormy16/sim_high.ld
index 7a3ae97a1..8226d870f 100644
--- a/libgloss/xstormy16/sim_high.ld
+++ b/libgloss/xstormy16/sim_high.ld
@@ -39,7 +39,6 @@ SECTIONS
   } > RAM
   . = ALIGN(2);
   __stack = .;
-  . = . + 4096;
   _end = .;
   PROVIDE (end = .);
   /* Read-only sections in ROM.  */
diff --git a/libgloss/xstormy16/sim_malloc_start.s b/libgloss/xstormy16/sim_malloc_start.s
new file mode 100644
index 000000000..143053f3b
--- /dev/null
+++ b/libgloss/xstormy16/sim_malloc_start.s
@@ -0,0 +1,5 @@
+# This file just defines __malloc_start for newlib for the simulator.
+# The simulator has RAM up to the I/O area at 0x7F00.
+	.globl __malloc_start
+	.set __malloc_start,0x7F00
+	
-- 
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