sh: CPU flags in AT_HWCAP in ELF auxvt.

Encode processor flags in AT_HWCAP in the ELF auxiliary vector.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

include/asm-sh/cpu-features.h

@@ -0,0 +1,15 @@
+#ifndef __ASM_SH_CPU_FEATURES_H
+#define __ASM_SH_CPU_FEATURES_H
+
+/*
+ * Processor flags
+ */
+#define CPU_HAS_FPU		0x0001	/* Hardware FPU support */
+#define CPU_HAS_P2_FLUSH_BUG	0x0002	/* Need to flush the cache in P2 area */
+#define CPU_HAS_MMU_PAGE_ASSOC	0x0004	/* SH3: TLB way selection bit support */
+#define CPU_HAS_DSP		0x0008	/* SH-DSP: DSP support */
+#define CPU_HAS_PERF_COUNTER	0x0010	/* Hardware performance counters */
+#define CPU_HAS_PTEA		0x0020	/* PTEA register */
+#define CPU_HAS_LLSC		0x0040	/* movli.l/movco.l */
+
+#endif /* __ASM_SH_CPU_FEATURES_H */

include/asm-sh/elf.h

@@ -1,6 +1,11 @@
 #ifndef __ASM_SH_ELF_H
 #define __ASM_SH_ELF_H
 
+#include <asm/processor.h>
+#include <asm/auxvec.h>
+#include <asm/ptrace.h>
+#include <asm/user.h>
+
 /* SH relocation types  */
 #define	R_SH_NONE		0
 #define	R_SH_DIR32		1
@@ -46,9 +51,6 @@
  * ELF register definitions..
  */
 
-#include <asm/ptrace.h>
-#include <asm/user.h>
-
 typedef unsigned long elf_greg_t;
 
 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
@@ -91,7 +93,7 @@ typedef struct user_fpu_struct elf_fpregset_t;
    instruction set this CPU supports.  This could be done in user space,
    but it's not easy, and we've already done it here.  */
 
-#define ELF_HWCAP	(0)
+#define ELF_HWCAP	(boot_cpu_data.flags)
 
 /* This yields a string that ld.so will use to load implementation
    specific libraries for optimization.  This is more specific in

include/asm-sh/processor.h

@@ -14,6 +14,7 @@
 #include <asm/types.h>
 #include <asm/cache.h>
 #include <asm/ptrace.h>
+#include <asm/cpu-features.h>
 
 /*
  * Default implementation of macro that returns current
@@ -127,17 +128,6 @@ union sh_fpu_union {
 	struct sh_fpu_soft_struct soft;
 };
 
-/*
- * Processor flags
- */
-
-#define CPU_HAS_FPU		0x0001	/* Hardware FPU support */
-#define CPU_HAS_P2_FLUSH_BUG	0x0002	/* Need to flush the cache in P2 area */
-#define CPU_HAS_MMU_PAGE_ASSOC	0x0004	/* SH3: TLB way selection bit support */
-#define CPU_HAS_DSP		0x0008	/* SH-DSP: DSP support */
-#define CPU_HAS_PERF_COUNTER	0x0010	/* Hardware performance counters */
-#define CPU_HAS_PTEA		0x0020	/* PTEA register */
-
 struct thread_struct {
 	unsigned long sp;
 	unsigned long pc;