gcc/
* config/xtensa/xtensa.h (TARGET_DEBUG): New definition.
* config/xtensa/xtensa.md (define_attr type): New type trap.
(define_insn trap): New definition.
---
Changes v1-v2:
- drop break.n, replace break 0, 0 with break 1, 15, coded breakpoint
that transfers control to debugger if present.
gcc/config/xtensa/xtensa.h | 1 +
gcc/config/xtensa/xtensa.md | 15 ++-
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/gcc/config/xtensa/xtensa.h b/gcc/config/xtensa/xtensa.h
index 011411c..584080b 100644
--- a/gcc/config/xtensa/xtensa.h
+++ b/gcc/config/xtensa/xtensa.h
@@ -67,6 +67,7 @@ extern unsigned xtensa_current_frame_size;
#define TARGET_THREADPTR XCHAL_HAVE_THREADPTR
#define TARGET_LOOPS XCHAL_HAVE_LOOPS
#define TARGET_WINDOWED_ABI(XSHAL_ABI == XTHAL_ABI_WINDOWED)
+#define TARGET_DEBUG XCHAL_HAVE_DEBUG
#define TARGET_DEFAULT \
((XCHAL_HAVE_L32R? 0 : MASK_CONST16) | \
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md
index 6d84384..a577aa3 100644
--- a/gcc/config/xtensa/xtensa.md
+++ b/gcc/config/xtensa/xtensa.md
@@ -86,7 +86,7 @@
;; Attributes.
(define_attr type
-
unknown,jump,call,load,store,move,arith,multi,nop,farith,fmadd,fconv,fload,fstore,mul16,mul32,div32,mac16,rsr,wsr,entry
+
unknown,jump,call,load,store,move,arith,multi,nop,farith,fmadd,fconv,fload,fstore,mul16,mul32,div32,mac16,rsr,wsr,entry,trap
(const_string unknown))
(define_attr mode
@@ -1764,6 +1764,19 @@
[(set_attr length 0)
(set_attr type nop)])
+(define_insn trap
+ [(trap_if (const_int 1) (const_int 0))]
+
+{
+ if (TARGET_DEBUG)
+return break\t1, 15;
+ else
+return (TARGET_DENSITY ? ill.n : ill);
+}
+ [(set_attr typetrap)
+ (set_attr modenone)
+ (set_attr length 3)])
+
;; Setting up a frame pointer is tricky for Xtensa because GCC doesn't
;; know if a frame pointer is required until the reload pass, and
;; because there may be an incoming argument value in the hard frame
--
1.8.1.4
