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tc-i386.c: store encoded instructions in unsigned char[]
authorTrevor Saunders <tbsaunde@tbsaunde.org>
Sun, 14 Feb 2016 19:41:38 +0000 (14:41 -0500)
committerTrevor Saunders <tbsaunde+binutils@tbsaunde.org>
Sun, 20 Mar 2016 17:22:55 +0000 (13:22 -0400)
char can be a signed type, and some of the values in these arrays are greater
than 0x80 which means they are outside of the range a signed char can store.
Fortunately it seems most compilers handle this in the obvious way by storing
the same bits as a negative number, but this is wierd and easily fixed.

gas/ChangeLog:

2016-03-20  Trevor Saunders  <tbsaunde+binutils@tbsaunde.org>

* tc-i386.c (f32_1): Change type to unsigned char[].
(f32_2): Likewise.
(f32_3): Likewise.
(f32_4): Likewise.
(f32_5): Likewise.
(f32_6): Likewise.
(f32_7): Likewise.
(f32_8): Likewise.
(f32_9): Likewise.
(f32_10): Likewise.
(f32_11): Likewise.
(f32_12): Likewise.
(f32_13): Likewise.
(f32_14): Likewise.
(f16_3): Likewise.
(f16_4): Likewise.
(f16_5): Likewise.
(f16_6): Likewise.
(f16_7): Likewise.
(f16_8): Likewise.
(jump_31): Likewise.
(f32_patt): Likewise.
(f16_patt): Likewise.
(alt_3): Likewise.
(alt_4): Likewise.
(alt_5): Likewise.
(alt_6): Likewise.
(alt_7): Likewise.
(alt_8): Likewise.
(alt_9): Likewise.
(alt_10): Likewise.
(alt_patt): Likewise.

gas/ChangeLog patch | blob | history
gas/config/tc-i386.c patch | blob | history

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 5b5015a..9d601fd 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,38 @@
+2016-03-20  Trevor Saunders  <tbsaunde+binutils@tbsaunde.org>
+
+       * tc-i386.c (f32_1): Change type to unsigned char[].
+       (f32_2): Likewise.
+       (f32_3): Likewise.
+       (f32_4): Likewise.
+       (f32_5): Likewise.
+       (f32_6): Likewise.
+       (f32_7): Likewise.
+       (f32_8): Likewise.
+       (f32_9): Likewise.
+       (f32_10): Likewise.
+       (f32_11): Likewise.
+       (f32_12): Likewise.
+       (f32_13): Likewise.
+       (f32_14): Likewise.
+       (f16_3): Likewise.
+       (f16_4): Likewise.
+       (f16_5): Likewise.
+       (f16_6): Likewise.
+       (f16_7): Likewise.
+       (f16_8): Likewise.
+       (jump_31): Likewise.
+       (f32_patt): Likewise.
+       (f16_patt): Likewise.
+       (alt_3): Likewise.
+       (alt_4): Likewise.
+       (alt_5): Likewise.
+       (alt_6): Likewise.
+       (alt_7): Likewise.
+       (alt_8): Likewise.
+       (alt_9): Likewise.
+       (alt_10): Likewise.
+       (alt_patt): Likewise.
+
 2016-03-18  Nick Clifton  <nickc@redhat.com>
 
        * doc/c-aarch64.texi (AArch64 Directives): Add descriptions of
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 37ee392..610bc2b 100644 (file)
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -1065,95 +1065,95 @@ i386_align_code (fragS *fragP, int count)
   /* Various efficient no-op patterns for aligning code labels.
      Note: Don't try to assemble the instructions in the comments.
      0L and 0w are not legal.  */
-  static const char f32_1[] =
+  static const unsigned char f32_1[] =
     {0x90};                                    /* nop                  */
-  static const char f32_2[] =
+  static const unsigned char f32_2[] =
     {0x66,0x90};                               /* xchg %ax,%ax */
-  static const char f32_3[] =
+  static const unsigned char f32_3[] =
     {0x8d,0x76,0x00};                          /* leal 0(%esi),%esi    */
-  static const char f32_4[] =
+  static const unsigned char f32_4[] =
     {0x8d,0x74,0x26,0x00};                     /* leal 0(%esi,1),%esi  */
-  static const char f32_5[] =
+  static const unsigned char f32_5[] =
     {0x90,                                     /* nop                  */
      0x8d,0x74,0x26,0x00};                     /* leal 0(%esi,1),%esi  */
-  static const char f32_6[] =
+  static const unsigned char f32_6[] =
     {0x8d,0xb6,0x00,0x00,0x00,0x00};           /* leal 0L(%esi),%esi   */
-  static const char f32_7[] =
+  static const unsigned char f32_7[] =
     {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00};      /* leal 0L(%esi,1),%esi */
-  static const char f32_8[] =
+  static const unsigned char f32_8[] =
     {0x90,                                     /* nop                  */
      0x8d,0xb4,0x26,0x00,0x00,0x00,0x00};      /* leal 0L(%esi,1),%esi */
-  static const char f32_9[] =
+  static const unsigned char f32_9[] =
     {0x89,0xf6,                                        /* movl %esi,%esi       */
      0x8d,0xbc,0x27,0x00,0x00,0x00,0x00};      /* leal 0L(%edi,1),%edi */
-  static const char f32_10[] =
+  static const unsigned char f32_10[] =
     {0x8d,0x76,0x00,                           /* leal 0(%esi),%esi    */
      0x8d,0xbc,0x27,0x00,0x00,0x00,0x00};      /* leal 0L(%edi,1),%edi */
-  static const char f32_11[] =
+  static const unsigned char f32_11[] =
     {0x8d,0x74,0x26,0x00,                      /* leal 0(%esi,1),%esi  */
      0x8d,0xbc,0x27,0x00,0x00,0x00,0x00};      /* leal 0L(%edi,1),%edi */
-  static const char f32_12[] =
+  static const unsigned char f32_12[] =
     {0x8d,0xb6,0x00,0x00,0x00,0x00,            /* leal 0L(%esi),%esi   */
      0x8d,0xbf,0x00,0x00,0x00,0x00};           /* leal 0L(%edi),%edi   */
-  static const char f32_13[] =
+  static const unsigned char f32_13[] =
     {0x8d,0xb6,0x00,0x00,0x00,0x00,            /* leal 0L(%esi),%esi   */
      0x8d,0xbc,0x27,0x00,0x00,0x00,0x00};      /* leal 0L(%edi,1),%edi */
-  static const char f32_14[] =
+  static const unsigned char f32_14[] =
     {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00,       /* leal 0L(%esi,1),%esi */
      0x8d,0xbc,0x27,0x00,0x00,0x00,0x00};      /* leal 0L(%edi,1),%edi */
-  static const char f16_3[] =
+  static const unsigned char f16_3[] =
     {0x8d,0x74,0x00};                          /* lea 0(%esi),%esi     */
-  static const char f16_4[] =
+  static const unsigned char f16_4[] =
     {0x8d,0xb4,0x00,0x00};                     /* lea 0w(%si),%si      */
-  static const char f16_5[] =
+  static const unsigned char f16_5[] =
     {0x90,                                     /* nop                  */
      0x8d,0xb4,0x00,0x00};                     /* lea 0w(%si),%si      */
-  static const char f16_6[] =
+  static const unsigned char f16_6[] =
     {0x89,0xf6,                                        /* mov %si,%si          */
      0x8d,0xbd,0x00,0x00};                     /* lea 0w(%di),%di      */
-  static const char f16_7[] =
+  static const unsigned char f16_7[] =
     {0x8d,0x74,0x00,                           /* lea 0(%si),%si       */
      0x8d,0xbd,0x00,0x00};                     /* lea 0w(%di),%di      */
-  static const char f16_8[] =
+  static const unsigned char f16_8[] =
     {0x8d,0xb4,0x00,0x00,                      /* lea 0w(%si),%si      */
      0x8d,0xbd,0x00,0x00};                     /* lea 0w(%di),%di      */
-  static const char jump_31[] =
+  static const unsigned char jump_31[] =
     {0xeb,0x1d,0x90,0x90,0x90,0x90,0x90,       /* jmp .+31; lotsa nops */
      0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90,
      0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90,
      0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90};
-  static const char *const f32_patt[] = {
+  static const unsigned char *const f32_patt[] = {
     f32_1, f32_2, f32_3, f32_4, f32_5, f32_6, f32_7, f32_8,
     f32_9, f32_10, f32_11, f32_12, f32_13, f32_14
   };
-  static const char *const f16_patt[] = {
+  static const unsigned char *const f16_patt[] = {
     f32_1, f32_2, f16_3, f16_4, f16_5, f16_6, f16_7, f16_8
   };
   /* nopl (%[re]ax) */
-  static const char alt_3[] =
+  static const unsigned char alt_3[] =
     {0x0f,0x1f,0x00};
   /* nopl 0(%[re]ax) */
-  static const char alt_4[] =
+  static const unsigned char alt_4[] =
     {0x0f,0x1f,0x40,0x00};
   /* nopl 0(%[re]ax,%[re]ax,1) */
-  static const char alt_5[] =
+  static const unsigned char alt_5[] =
     {0x0f,0x1f,0x44,0x00,0x00};
   /* nopw 0(%[re]ax,%[re]ax,1) */
-  static const char alt_6[] =
+  static const unsigned char alt_6[] =
     {0x66,0x0f,0x1f,0x44,0x00,0x00};
   /* nopl 0L(%[re]ax) */
-  static const char alt_7[] =
+  static const unsigned char alt_7[] =
     {0x0f,0x1f,0x80,0x00,0x00,0x00,0x00};
   /* nopl 0L(%[re]ax,%[re]ax,1) */
-  static const char alt_8[] =
+  static const unsigned char alt_8[] =
     {0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
   /* nopw 0L(%[re]ax,%[re]ax,1) */
-  static const char alt_9[] =
+  static const unsigned char alt_9[] =
     {0x66,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
   /* nopw %cs:0L(%[re]ax,%[re]ax,1) */
-  static const char alt_10[] =
+  static const unsigned char alt_10[] =
     {0x66,0x2e,0x0f,0x1f,0x84,0x00,0x00,0x00,0x00,0x00};
-  static const char *const alt_patt[] = {
+  static const unsigned char *const alt_patt[] = {
     f32_1, f32_2, alt_3, alt_4, alt_5, alt_6, alt_7, alt_8,
     alt_9, alt_10
   };
@@ -1191,7 +1191,7 @@ i386_align_code (fragS *fragP, int count)
     }
   else
     {
-      const char *const *patt = NULL;
+      const unsigned char *const *patt = NULL;
 
       if (fragP->tc_frag_data.isa == PROCESSOR_UNKNOWN)
        {
Domain: System / Toolchain;