From: Ian Jackson <iwj@mariner.uk.xensource.com>
Date: Fri, 6 Jun 2008 15:28:00 +0000 (+0100)
Subject: Provide ldl_phys et al.
X-Git-Tag: xen-3.3.0-rc1~100
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=d214f2805ab482383be5e317bb1cac9ff2b79c33;p=qemu-xen-4.0-testing.git

Provide ldl_phys et al.

We implement these in the Xen DM case as simple unoptimised wrappers
around cpu_physical_memory_write.

Several were copied directly from this qemu upstream commit:

    commit aab33094073678d459ccaac5c60ea7533e8d1d8e
    Author: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
    Date:   Sun Oct 30 20:48:42 2005 +0000

	more physical memory access functions

	git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1587 c046a42c-6fe2-441c-8c8c-71466251a162

I handwrote the others in the same pattern.
---

diff --git a/i386-dm/exec-dm.c b/i386-dm/exec-dm.c
index 7796ba54..85e65797 100644
--- a/i386-dm/exec-dm.c
+++ b/i386-dm/exec-dm.c
@@ -617,3 +617,57 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
 
 	return;
 }
+
+
+/* Unoptimised in Xen DM, nicked from git
+ *  aab33094073678d459ccaac5c60ea7533e8d1d8e */
+uint32_t ldub_phys(target_phys_addr_t addr)
+{
+    uint8_t val;
+    cpu_physical_memory_read(addr, &val, 1);
+    return val;
+}
+uint32_t lduw_phys(target_phys_addr_t addr)
+{
+    uint16_t val;
+    cpu_physical_memory_read(addr, (uint8_t *)&val, 2);
+    return tswap16(val);
+}
+uint64_t ldq_phys(target_phys_addr_t addr)
+{
+    uint64_t val;
+    cpu_physical_memory_read(addr, (uint8_t *)&val, 8);
+    return tswap64(val);
+}
+void stb_phys(target_phys_addr_t addr, uint32_t val)
+{
+    uint8_t v = val;
+    cpu_physical_memory_write(addr, &v, 1);
+}
+void stw_phys(target_phys_addr_t addr, uint32_t val)
+{
+    uint16_t v = tswap16(val);
+    cpu_physical_memory_write(addr, (const uint8_t *)&v, 2);
+}
+void stq_phys(target_phys_addr_t addr, uint64_t val)
+{
+    val = tswap64(val);
+    cpu_physical_memory_write(addr, (const uint8_t *)&val, 8);
+}
+
+/* stubs which we hope (think!) are OK for Xen DM */
+void stl_phys(target_phys_addr_t addr, uint32_t val)
+{
+    val = tswap32(val);
+    cpu_physical_memory_write(addr, (const uint8_t *)&val, 4);
+}
+void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val)
+{
+    stl_phys(addr, val);
+}
+uint32_t ldl_phys(target_phys_addr_t addr)
+{
+    uint32_t val;
+    cpu_physical_memory_read(addr, (uint8_t *)&val, 4);
+    return tswap32(val);
+}