[ARM] 3060/1: allow constants found in asm/memory.h to be used in asm code

Patch from Nicolas Pitre

This patch allows for assorted type of cleanups by letting assembly code
use the same set of defines for constant values and avoid duplicated
definitions that might not always be in sync, or that might simply be
confusing due to the different names for the same thing.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/kernel/asm-offsets.c

@@ -94,7 +94,6 @@ int main(void)
   DEFINE(VM_EXEC,	       	VM_EXEC);
   BLANK();
   DEFINE(PAGE_SZ,	       	PAGE_SIZE);
-  DEFINE(VIRT_OFFSET,		PAGE_OFFSET);
   BLANK();
   DEFINE(SYS_ERROR0,		0x9f0000);
   BLANK();

arch/arm/kernel/entry-armv.S

@@ -15,6 +15,7 @@
  */
 #include <linux/config.h>
 
+#include <asm/memory.h>
 #include <asm/glue.h>
 #include <asm/vfpmacros.h>
 #include <asm/hardware.h>		/* should be moved into entry-macro.S */
@@ -310,7 +311,7 @@ __pabt_svc:
 
 #if __LINUX_ARM_ARCH__ < 6 && !defined(CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG)
 	@ make sure our user space atomic helper is aborted
-	cmp	r2, #VIRT_OFFSET
+	cmp	r2, #TASK_SIZE
 	bichs	r3, r3, #PSR_Z_BIT
 #endif
 

arch/arm/kernel/head.S

@@ -21,6 +21,7 @@
 #include <asm/procinfo.h>
 #include <asm/ptrace.h>
 #include <asm/asm-offsets.h>
+#include <asm/memory.h>
 #include <asm/thread_info.h>
 #include <asm/system.h>
 
@@ -76,7 +77,7 @@
 	.equ	swapper_pg_dir, DATAADDR - 0x4000
 
 	.macro	pgtbl, rd, phys
-	ldr	\rd, =((DATAADDR - 0x4000) - VIRT_OFFSET)
+	ldr	\rd, =((DATAADDR - 0x4000) - PAGE_OFFSET)
 	add	\rd, \rd, \phys
 	.endm
 #endif
@@ -324,7 +325,7 @@ __create_page_tables:
 	/*
 	 * Then map first 1MB of ram in case it contains our boot params.
 	 */
-	add	r0, r4, #VIRT_OFFSET >> 18
+	add	r0, r4, #PAGE_OFFSET >> 18
 	orr	r6, r5, r7
 	str	r6, [r0]
 

include/asm-arm/arch-aaec2000/memory.h

@@ -13,7 +13,7 @@
 
 #include <linux/config.h>
 
-#define PHYS_OFFSET	(0xf0000000UL)
+#define PHYS_OFFSET	UL(0xf0000000)
 
 #define __virt_to_bus(x)	__virt_to_phys(x)
 #define __bus_to_virt(x)	__phys_to_virt(x)

include/asm-arm/arch-cl7500/memory.h

@@ -17,7 +17,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0x10000000UL)
+#define PHYS_OFFSET	UL(0x10000000)
 
 /*
  * These are exactly the same on the RiscPC as the

include/asm-arm/arch-clps711x/memory.h

@@ -25,7 +25,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0xc0000000UL)
+#define PHYS_OFFSET	UL(0xc0000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-ebsa110/memory.h

@@ -19,7 +19,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0x00000000UL)
+#define PHYS_OFFSET	UL(0x00000000)
 
 /*
  * We keep this 1:1 so that we don't interfere

include/asm-arm/arch-ebsa285/memory.h

@@ -46,14 +46,14 @@ extern unsigned long __bus_to_virt(unsigned long);
 #if defined(CONFIG_ARCH_FOOTBRIDGE)
 
 /* Task size and page offset at 3GB */
-#define TASK_SIZE		(0xbf000000UL)
-#define PAGE_OFFSET		(0xc0000000UL)
+#define TASK_SIZE		UL(0xbf000000)
+#define PAGE_OFFSET		UL(0xc0000000)
 
 #elif defined(CONFIG_ARCH_CO285)
 
 /* Task size and page offset at 1.5GB */
-#define TASK_SIZE		(0x5f000000UL)
-#define PAGE_OFFSET		(0x60000000UL)
+#define TASK_SIZE		UL(0x5f000000)
+#define PAGE_OFFSET		UL(0x60000000)
 
 #else
 
@@ -64,7 +64,7 @@ extern unsigned long __bus_to_virt(unsigned long);
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET		(0x00000000UL)
+#define PHYS_OFFSET		UL(0x00000000)
 
 /*
  * This decides where the kernel will search for a free chunk of vm

include/asm-arm/arch-epxa10db/memory.h

@@ -23,7 +23,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0x00000000UL)
+#define PHYS_OFFSET	UL(0x00000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-h720x/memory.h

@@ -11,7 +11,7 @@
  * Page offset:
  *    ( 0xc0000000UL )
  */
-#define PHYS_OFFSET	(0x40000000UL)
+#define PHYS_OFFSET	UL(0x40000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-imx/memory.h

@@ -21,7 +21,7 @@
 #ifndef __ASM_ARCH_MMU_H
 #define __ASM_ARCH_MMU_H
 
-#define PHYS_OFFSET	(0x08000000UL)
+#define PHYS_OFFSET	UL(0x08000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-integrator/memory.h

@@ -23,8 +23,8 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0x00000000UL)
-#define BUS_OFFSET	(0x80000000UL)
+#define PHYS_OFFSET	UL(0x00000000)
+#define BUS_OFFSET	UL(0x80000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-iop3xx/memory.h

@@ -12,9 +12,9 @@
  * Physical DRAM offset.
  */
 #ifndef CONFIG_ARCH_IOP331
-#define PHYS_OFFSET	(0xa0000000UL)
+#define PHYS_OFFSET	UL(0xa0000000)
 #else
-#define PHYS_OFFSET	(0x00000000UL)
+#define PHYS_OFFSET	UL(0x00000000)
 #endif
 
 /*

include/asm-arm/arch-ixp2000/memory.h

@@ -13,7 +13,7 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-#define PHYS_OFFSET	(0x00000000UL)
+#define PHYS_OFFSET	UL(0x00000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-ixp4xx/memory.h

@@ -12,7 +12,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0x00000000UL)
+#define PHYS_OFFSET	UL(0x00000000)
 
 #ifndef __ASSEMBLY__
 

include/asm-arm/arch-l7200/memory.h

@@ -15,7 +15,7 @@
 /*
  * Physical DRAM offset on the L7200 SDB.
  */
-#define PHYS_OFFSET     (0xf0000000UL)
+#define PHYS_OFFSET     UL(0xf0000000)
 
 #define __virt_to_bus(x) __virt_to_phys(x)
 #define __bus_to_virt(x) __phys_to_virt(x)

include/asm-arm/arch-lh7a40x/memory.h

@@ -17,7 +17,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0xc0000000UL)
+#define PHYS_OFFSET	UL(0xc0000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-omap/memory.h

@@ -37,9 +37,9 @@
  * Physical DRAM offset.
  */
 #if defined(CONFIG_ARCH_OMAP1)
-#define PHYS_OFFSET		(0x10000000UL)
+#define PHYS_OFFSET		UL(0x10000000)
 #elif defined(CONFIG_ARCH_OMAP2)
-#define PHYS_OFFSET		(0x80000000UL)
+#define PHYS_OFFSET		UL(0x80000000)
 #endif
 
 /*
@@ -66,7 +66,7 @@
 /*
  * OMAP-1510 Local Bus address offset
  */
-#define OMAP1510_LB_OFFSET	(0x30000000UL)
+#define OMAP1510_LB_OFFSET	UL(0x30000000)
 
 #define virt_to_lbus(x)		((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
 #define lbus_to_virt(x)		((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)

include/asm-arm/arch-pxa/memory.h

@@ -15,7 +15,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0xa0000000UL)
+#define PHYS_OFFSET	UL(0xa0000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/arch-rpc/memory.h

@@ -21,7 +21,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0x10000000UL)
+#define PHYS_OFFSET	UL(0x10000000)
 
 /*
  * These are exactly the same on the RiscPC as the

include/asm-arm/arch-s3c2410/memory.h

@@ -28,9 +28,9 @@
  * and at 0x0C000000 for S3C2400
  */
 #ifdef CONFIG_CPU_S3C2400
-#define PHYS_OFFSET	(0x0C000000UL)
+#define PHYS_OFFSET	UL(0x0C000000)
 #else
-#define PHYS_OFFSET	(0x30000000UL)
+#define PHYS_OFFSET	UL(0x30000000)
 #endif
 
 /*

include/asm-arm/arch-sa1100/memory.h

@@ -13,7 +13,7 @@
 /*
  * Physical DRAM offset is 0xc0000000 on the SA1100
  */
-#define PHYS_OFFSET	(0xc0000000UL)
+#define PHYS_OFFSET	UL(0xc0000000)
 
 #ifndef __ASSEMBLY__
 

include/asm-arm/arch-shark/memory.h

@@ -15,7 +15,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET     (0x08000000UL)
+#define PHYS_OFFSET     UL(0x08000000)
 
 #ifndef __ASSEMBLY__
 

include/asm-arm/arch-versatile/memory.h

@@ -23,7 +23,7 @@
 /*
  * Physical DRAM offset.
  */
-#define PHYS_OFFSET	(0x00000000UL)
+#define PHYS_OFFSET	UL(0x00000000)
 
 /*
  * Virtual view <-> DMA view memory address translations

include/asm-arm/memory.h

@@ -12,6 +12,16 @@
 #ifndef __ASM_ARM_MEMORY_H
 #define __ASM_ARM_MEMORY_H
 
+/*
+ * Allow for constants defined here to be used from assembly code
+ * by prepending the UL suffix only with actual C code compilation.
+ */
+#ifndef __ASSEMBLY__
+#define UL(x) (x##UL)
+#else
+#define UL(x) (x)
+#endif
+
 #include <linux/config.h>
 #include <linux/compiler.h>
 #include <asm/arch/memory.h>
@@ -21,20 +31,20 @@
  * TASK_SIZE - the maximum size of a user space task.
  * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area
  */
-#define TASK_SIZE		(0xbf000000UL)
-#define TASK_UNMAPPED_BASE	(0x40000000UL)
+#define TASK_SIZE		UL(0xbf000000)
+#define TASK_UNMAPPED_BASE	UL(0x40000000)
 #endif
 
 /*
  * The maximum size of a 26-bit user space task.
  */
-#define TASK_SIZE_26		(0x04000000UL)
+#define TASK_SIZE_26		UL(0x04000000)
 
 /*
  * Page offset: 3GB
  */
 #ifndef PAGE_OFFSET
-#define PAGE_OFFSET		(0xc0000000UL)
+#define PAGE_OFFSET		UL(0xc0000000)
 #endif
 
 /*