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authorAlan Modra <amodra@gmail.com>2010-07-03 03:32:50 +0000
committerAlan Modra <amodra@gmail.com>2010-07-03 03:32:50 +0000
commitf2bae120dcefc6a640fada0dd3eebbf02aa31296 (patch)
treeabdf4285607905896e249b026e849ad43fa7de61 /include
parentab8efdf25ff99d7f177f2b3047ada5100db6b791 (diff)
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* ppc.h (PPC_OPCODE_COMMON): Expand comment.
Diffstat (limited to 'include')
-rw-r--r--include/opcode/ChangeLog4
-rw-r--r--include/opcode/ppc.h5
2 files changed, 8 insertions, 1 deletions
diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index e1b96f1..82bdc8f 100644
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,7 @@
+2010-07-03 Alan Modra <amodra@gmail.com>
+
+ * ppc.h (PPC_OPCODE_COMMON): Expand comment.
+
2010-06-29 Alan Modra <amodra@gmail.com>
* maxq.h: Delete file.
diff --git a/include/opcode/ppc.h b/include/opcode/ppc.h
index 2d99cd4..6e3a84b 100644
--- a/include/opcode/ppc.h
+++ b/include/opcode/ppc.h
@@ -89,7 +89,10 @@ extern const int powerpc_num_opcodes;
#define PPC_OPCODE_601 0x20
/* Opcode is supported in both the Power and PowerPC architectures
- (ie, compiler's -mcpu=common or assembler's -mcom). */
+ (ie, compiler's -mcpu=common or assembler's -mcom). More than just
+ the intersection of PPC_OPCODE_PPC with the union of PPC_OPCODE_POWER
+ and PPC_OPCODE_POWER2 because many instructions changed mnemonics
+ between POWER and POWERPC. */
#define PPC_OPCODE_COMMON 0x40
/* Opcode is supported for any Power or PowerPC platform (this is