[src/trunk]: src/sys/arch/arm/include Add _THUMB_ENTRY and _ARM_ENTRY which d...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/dc32c97551b6
branches:  trunk
changeset: 789296:dc32c97551b6
user:      matt <matt%NetBSD.org@localhost>
date:      Tue Aug 13 00:18:15 2013 +0000

description:
Add _THUMB_ENTRY and _ARM_ENTRY which do the appropriate things including
switching instruction sets.
Use __thumb__ to decide which _ENTRY gets defined as

diffstat:

 sys/arch/arm/include/asm.h |  20 +++++++++++++++-----
 1 files changed, 15 insertions(+), 5 deletions(-)

diffs (43 lines):

diff -r 66cf1afe0422 -r dc32c97551b6 sys/arch/arm/include/asm.h
--- a/sys/arch/arm/include/asm.h        Tue Aug 13 00:04:08 2013 +0000
+++ b/sys/arch/arm/include/asm.h        Tue Aug 13 00:18:15 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: asm.h,v 1.19 2013/08/11 04:39:18 matt Exp $    */
+/*     $NetBSD: asm.h,v 1.20 2013/08/13 00:18:15 matt Exp $    */
 
 /*
  * Copyright (c) 1990 The Regents of the University of California.
@@ -41,6 +41,12 @@
 
        .syntax         unified
 
+#ifdef __thumb__
+#define THUMB_INSN(n)  n
+#else
+#define THUMB_INSN(n)
+#endif
+
 #define        __BIT(n)        (1 << (n))
 #define __BITS(hi,lo)  ((~((~0)<<((hi)+1)))&((~0)<<(lo)))
 
@@ -67,12 +73,16 @@
  */
 #define _ASM_TYPE_FUNCTION     %function
 #define _ASM_TYPE_OBJECT       %object
+#define _THUMB_ENTRY(x) \
+       .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; \
+       .thumb_func; .code 16; x:
+#define _ARM_ENTRY(x) \
+       .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; \
+       .code 32; x:
 #ifdef __thumb__
-#define _ENTRY(x) \
-       .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; .thumb_func; x:
+#define        _ENTRY(x)       _THUMB_ENTRY(x)
 #else
-#define _ENTRY(x) \
-       .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x:
+#define        _ENTRY(x)       _ARM_ENTRY(x)
 #endif
 #define        _END(x)         .size x,.-x