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From 2b4b5775554c91a63ccae4ee566db696b633652e Mon Sep 17 00:00:00 2001

From: jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4>

Date: Wed, 10 Jun 2015 15:07:40 +0000

Subject: [PATCH] xtensa: implement trap pattern

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2015-06-10  Max Filippov  <jcmvbkbc@gmail.com>

gcc/

    * config/xtensa/xtensa.h (TARGET_DEBUG): New definition.

    * config/xtensa/xtensa.md (define_attr "type"): New type "trap".

    (define_insn "trap"): New definition.

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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

​

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@224330 138bc75d-0d04-0410-961f-82ee72b054a4

---

 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 615f741..fb8702c 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 "type"    "trap")

+   (set_attr "mode"    "none")

+   (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

-- 

2.1.4

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