[Xen-changelog] [xen master] xen/arm: Stringify the register name in sysreg read write macros

[patchbot@xxxxxxx]

commit 7d725669833a72eadf30bc500c6ede18a52bb057
Author:     Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
AuthorDate: Wed Jul 23 19:11:48 2014 +0530
Commit:     Ian Campbell <ian.campbell@xxxxxxxxxx>
CommitDate: Wed Sep 3 12:49:36 2014 +0100

    xen/arm: Stringify the register name in sysreg read write macros
    
    The register name parameter in {READ,WRITE}_SYSREG{32,64}
    macros is replaced as register name in mrs and msr assembly
    instruction.
    
    If this register name is macro indirection, the register
    name is not replaced with designated macro. So replace the register
    name with __stringify macro, which replaces register name
    if it is macro
    
    Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
    Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
    Acked-by: Julien Grall <julien.grall@xxxxxxxxxx>
---
 xen/include/asm-arm/arm64/processor.h |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/xen/include/asm-arm/arm64/processor.h 
b/xen/include/asm-arm/arm64/processor.h
index 5bf0867..3a9c0cd 100644
--- a/xen/include/asm-arm/arm64/processor.h
+++ b/xen/include/asm-arm/arm64/processor.h
@@ -1,6 +1,8 @@
 #ifndef __ASM_ARM_ARM64_PROCESSOR_H
 #define __ASM_ARM_ARM64_PROCESSOR_H
 
+#include <xen/stringify.h>
+
 #ifndef __ASSEMBLY__
 
 /* Anonymous union includes both 32- and 64-bit names (e.g., r0/x0). */
@@ -85,20 +87,20 @@ struct cpu_user_regs
 
 #define READ_SYSREG32(name) ({                          \
     uint32_t _r;                                        \
-    asm volatile("mrs  %0, "#name : "=r" (_r));         \
+    asm volatile("mrs  %0, "__stringify(name) : "=r" (_r));         \
     _r; })
 #define WRITE_SYSREG32(v, name) do {                    \
     uint32_t _r = v;                                    \
-    asm volatile("msr "#name", %0" : : "r" (_r));       \
+    asm volatile("msr "__stringify(name)", %0" : : "r" (_r));       \
 } while (0)
 
 #define WRITE_SYSREG64(v, name) do {                    \
     uint64_t _r = v;                                    \
-    asm volatile("msr "#name", %0" : : "r" (_r));       \
+    asm volatile("msr "__stringify(name)", %0" : : "r" (_r));       \
 } while (0)
 #define READ_SYSREG64(name) ({                          \
     uint64_t _r;                                        \
-    asm volatile("mrs  %0, "#name : "=r" (_r));         \
+    asm volatile("mrs  %0, "__stringify(name) : "=r" (_r));         \
     _r; })
 
 #define READ_SYSREG(name)     READ_SYSREG64(name)
--
generated by git-patchbot for /home/xen/git/xen.git#master

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