package/gcc/5.4.0/875-xtensa-implement-trap-pattern.patch

   1 From 2b4b5775554c91a63ccae4ee566db696b633652e Mon Sep 17 00:00:00 2001
   2 From: jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4>
   3 Date: Wed, 10 Jun 2015 15:07:40 +0000
   4 Subject: [PATCH] xtensa: implement trap pattern
   5
   6 2015-06-10  Max Filippov  <jcmvbkbc@gmail.com>
   7 gcc/
   8         * config/xtensa/xtensa.h (TARGET_DEBUG): New definition.
   9         * config/xtensa/xtensa.md (define_attr "type"): New type "trap".
  10         (define_insn "trap"): New definition.
  11
  12 Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
  13
  14 git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@224330 138bc75d-0d04-0410-961f-82ee72b054a4
  15 ---
  16  gcc/config/xtensa/xtensa.h  |  1 +
  17  gcc/config/xtensa/xtensa.md | 15 ++++++++++++++-
  18  2 files changed, 15 insertions(+), 1 deletion(-)
  19
  20 diff --git a/gcc/config/xtensa/xtensa.h b/gcc/config/xtensa/xtensa.h
  21 index 615f741..fb8702c 100644
  22 --- a/gcc/config/xtensa/xtensa.h
  23 +++ b/gcc/config/xtensa/xtensa.h
  24 @@ -67,6 +67,7 @@ extern unsigned xtensa_current_frame_size;
  25  #define TARGET_THREADPTR       XCHAL_HAVE_THREADPTR
  26  #define TARGET_LOOPS           XCHAL_HAVE_LOOPS
  27  #define TARGET_WINDOWED_ABI    (XSHAL_ABI == XTHAL_ABI_WINDOWED)
  28 +#define TARGET_DEBUG           XCHAL_HAVE_DEBUG
  29
  30  #define TARGET_DEFAULT \
  31    ((XCHAL_HAVE_L32R    ? 0 : MASK_CONST16) |                           \
  32 diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md
  33 index 6d84384..a577aa3 100644
  34 --- a/gcc/config/xtensa/xtensa.md
  35 +++ b/gcc/config/xtensa/xtensa.md
  36 @@ -86,7 +86,7 @@
  37  ;; Attributes.
  38
  39  (define_attr "type"
  40 -  "unknown,jump,call,load,store,move,arith,multi,nop,farith,fmadd,fconv,fload,fstore,mul16,mul32,div32,mac16,rsr,wsr,entry"
  41 +  "unknown,jump,call,load,store,move,arith,multi,nop,farith,fmadd,fconv,fload,fstore,mul16,mul32,div32,mac16,rsr,wsr,entry,trap"
  42    (const_string "unknown"))
  43
  44  (define_attr "mode"
  45 @@ -1764,6 +1764,19 @@
  46    [(set_attr "length" "0")
  47     (set_attr "type" "nop")])
  48
  49 +(define_insn "trap"
  50 +  [(trap_if (const_int 1) (const_int 0))]
  51 +  ""
  52 +{
  53 +  if (TARGET_DEBUG)
  54 +    return "break\t1, 15";
  55 +  else
  56 +    return (TARGET_DENSITY ? "ill.n" : "ill");
  57 +}
  58 +  [(set_attr "type"    "trap")
  59 +   (set_attr "mode"    "none")
  60 +   (set_attr "length"  "3")])
  61 +
  62  ;; Setting up a frame pointer is tricky for Xtensa because GCC doesn't
  63  ;; know if a frame pointer is required until the reload pass, and
  64  ;; because there may be an incoming argument value in the hard frame
  65 --
  66 2.1.4
  67