From e9a1ab19d196aa50619fd8b77157bd11a5a8aa01 Mon Sep 17 00:00:00 2001
From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Thu, 8 Feb 2007 23:08:38 +0000
Subject: [PATCH] ram allocation functions
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2404 c046a42c-6fe2-441c-8c8c-71466251a162
---
cpu-all.h | 2 ++
exec.c | 19 +++++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/cpu-all.h b/cpu-all.h
index ed5355319a..8a4730d32c 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -848,6 +848,8 @@ void cpu_register_physical_memory(target_phys_addr_t start_addr,
unsigned long size,
unsigned long phys_offset);
uint32_t cpu_get_physical_page_desc(target_phys_addr_t addr);
+ram_addr_t qemu_ram_alloc(unsigned int size);
+void qemu_ram_free(ram_addr_t addr);
int cpu_register_io_memory(int io_index,
CPUReadMemoryFunc **mem_read,
CPUWriteMemoryFunc **mem_write,
diff --git a/exec.c b/exec.c
index ae2d825da3..2e09b4bc3e 100644
--- a/exec.c
+++ b/exec.c
@@ -82,6 +82,7 @@ int phys_ram_size;
int phys_ram_fd;
uint8_t *phys_ram_base;
uint8_t *phys_ram_dirty;
+static ram_addr_t phys_ram_alloc_offset = 0;
CPUState *first_cpu;
/* current CPU in the current thread. It is only valid inside
@@ -1812,6 +1813,24 @@ uint32_t cpu_get_physical_page_desc(target_phys_addr_t addr)
return p->phys_offset;
}
+/* XXX: better than nothing */
+ram_addr_t qemu_ram_alloc(unsigned int size)
+{
+ ram_addr_t addr;
+ if ((phys_ram_alloc_offset + size) >= phys_ram_size) {
+ fprintf(stderr, "Not enough memory (requested_size = %u, max memory = %d)\n",
+ size, phys_ram_size);
+ abort();
+ }
+ addr = phys_ram_alloc_offset;
+ phys_ram_alloc_offset = TARGET_PAGE_ALIGN(phys_ram_alloc_offset + size);
+ return addr;
+}
+
+void qemu_ram_free(ram_addr_t addr)
+{
+}
+
static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr)
{
#ifdef DEBUG_UNASSIGNED