[AArch64] Cleanup comments in instruction decoding functions

gdb/ChangeLog:

	* aarch64-tdep.c (decode_cb): Move up comment describing the
	encoding.
	(decode_tb): Fix a typo in comment above the function.  Move up
	comment describing the encoding.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 094298605ec71b071e519ef7a88ce94f44dbac05..d7a8d31076bd5c73e726fe1e9dcc743aa6822bfc 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2015-09-11  Pierre Langlois  <pierre.langlois@arm.com>
+
+       * aarch64-tdep.c (decode_cb): Move up comment describing the
+       encoding.
+       (decode_tb): Fix a typo in comment above the function.  Move up
+       comment describing the encoding.
+
 2015-09-11  Pierre Langlois  <pierre.langlois@arm.com>
 
        * aarch64-tdep.c (decode_bcond): Fix incorrect mask.

diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index a4d8186a2f18047ab317bbfdb3a9357b3cee74f4..2ac1a49ee8f8a31ef744e9d85165386ae5b3d139 100644 (file)
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -401,11 +401,10 @@ static int
 decode_cb (CORE_ADDR addr, uint32_t insn, int *is64, int *is_cbnz,
           unsigned *rn, int32_t *offset)
 {
+  /* cbz  T011 010o iiii iiii iiii iiii iiir rrrr */
+  /* cbnz T011 010o iiii iiii iiii iiii iiir rrrr */
   if (decode_masked_match (insn, 0x7e000000, 0x34000000))
     {
-      /* cbz  T011 010o iiii iiii iiii iiii iiir rrrr */
-      /* cbnz T011 010o iiii iiii iiii iiii iiir rrrr */
-
       *rn = (insn >> 0) & 0x1f;
       *is64 = (insn >> 31) & 0x1;
       *is_cbnz = (insn >> 24) & 0x1;
@@ -628,7 +627,7 @@ decode_stur (CORE_ADDR addr, uint32_t insn, int *is64, unsigned *rt,
   return 0;
 }
 
-/* Decode an opcode if it represents a TB or TBNZ instruction.
+/* Decode an opcode if it represents a TBZ or TBNZ instruction.
 
    ADDR specifies the address of the opcode.
    INSN specifies the opcode to test.
@@ -643,11 +642,10 @@ static int
 decode_tb (CORE_ADDR addr, uint32_t insn, int *is_tbnz, unsigned *bit,
           unsigned *rt, int32_t *imm)
 {
+  /* tbz  b011 0110 bbbb biii iiii iiii iiir rrrr */
+  /* tbnz B011 0111 bbbb biii iiii iiii iiir rrrr */
   if (decode_masked_match (insn, 0x7e000000, 0x36000000))
     {
-      /* tbz  b011 0110 bbbb biii iiii iiii iiir rrrr */
-      /* tbnz B011 0111 bbbb biii iiii iiii iiir rrrr */
-
       *rt = (insn >> 0) & 0x1f;
       *is_tbnz = (insn >> 24) & 0x1;
       *bit = ((insn >> (31 - 4)) & 0x20) | ((insn >> 19) & 0x1f);