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implement powerpc bh field
- From: Alan Modra <amodra at bigpond dot net dot au>
- To: binutils at sources dot redhat dot com, Anton Blanchard <anton at samba dot org>
- Date: Sat, 26 Jun 2004 18:00:33 +0930
- Subject: implement powerpc bh field
Branch hints for subroutine return.
* ppc-opc.c (BH, XLBH_MASK): Define.
(powerpc_opcodes): Allow BH field on bclr, bclrl, bcctr, bcctrl.
Index: opcodes/ppc-opc.c
===================================================================
RCS file: /cvs/src/src/opcodes/ppc-opc.c,v
retrieving revision 1.71
diff -u -p -r1.71 ppc-opc.c
--- opcodes/ppc-opc.c 19 May 2004 05:11:48 -0000 1.71
+++ opcodes/ppc-opc.c 26 Jun 2004 08:24:18 -0000
@@ -194,8 +194,11 @@ const struct powerpc_operand powerpc_ope
#define BOE BO + 1
{ 5, 21, insert_boe, extract_boe, 0 },
+#define BH BOE + 1
+ { 2, 11, 0, 0, PPC_OPERAND_OPTIONAL },
+
/* The BT field in an X or XL form instruction. */
-#define BT BOE + 1
+#define BT BH + 1
{ 5, 21, 0, 0, PPC_OPERAND_CR },
/* The condition register number portion of the BI field in a B form
@@ -1656,6 +1659,9 @@ extract_tbr (unsigned long insn,
#define XLYBB_MASK (XLYLK_MASK | BB_MASK)
#define XLBOCBBB_MASK (XLOCB_MASK | BB_MASK)
+/* A mask for branch instructions using the BH field. */
+#define XLBH_MASK (XL_MASK | (0x1c << 11))
+
/* An XL_MASK with the BO and BB fields fixed. */
#define XLBOBB_MASK (XL_MASK | BO_MASK | BB_MASK)
@@ -2883,12 +2889,12 @@ const struct powerpc_opcode powerpc_opco
{ "bdzflrl", XLO(19,BODZF,16,1), XLBOBB_MASK, PPCCOM, { BI } },
{ "bdzflrl-",XLO(19,BODZF,16,1), XLBOBB_MASK, NOPOWER4, { BI } },
{ "bdzflrl+",XLO(19,BODZFP,16,1), XLBOBB_MASK, NOPOWER4, { BI } },
-{ "bclr", XLLK(19,16,0), XLYBB_MASK, PPCCOM, { BO, BI } },
-{ "bclrl", XLLK(19,16,1), XLYBB_MASK, PPCCOM, { BO, BI } },
{ "bclr+", XLYLK(19,16,1,0), XLYBB_MASK, PPCCOM, { BOE, BI } },
{ "bclrl+", XLYLK(19,16,1,1), XLYBB_MASK, PPCCOM, { BOE, BI } },
{ "bclr-", XLYLK(19,16,0,0), XLYBB_MASK, PPCCOM, { BOE, BI } },
{ "bclrl-", XLYLK(19,16,0,1), XLYBB_MASK, PPCCOM, { BOE, BI } },
+{ "bclr", XLLK(19,16,0), XLBH_MASK, PPCCOM, { BO, BI, BH } },
+{ "bclrl", XLLK(19,16,1), XLBH_MASK, PPCCOM, { BO, BI, BH } },
{ "bcr", XLLK(19,16,0), XLBB_MASK, PWRCOM, { BO, BI } },
{ "bcrl", XLLK(19,16,1), XLBB_MASK, PWRCOM, { BO, BI } },
{ "bclre", XLLK(19,17,0), XLBB_MASK, BOOKE64, { BO, BI } },
@@ -3067,12 +3073,12 @@ const struct powerpc_opcode powerpc_opco
{ "bfctrl-", XLO(19,BOFM4,528,1), XLBOBB_MASK, POWER4, { BI } },
{ "bfctrl+", XLO(19,BOFP,528,1), XLBOBB_MASK, NOPOWER4, { BI } },
{ "bfctrl+", XLO(19,BOFP4,528,1), XLBOBB_MASK, POWER4, { BI } },
-{ "bcctr", XLLK(19,528,0), XLYBB_MASK, PPCCOM, { BO, BI } },
{ "bcctr-", XLYLK(19,528,0,0), XLYBB_MASK, PPCCOM, { BOE, BI } },
{ "bcctr+", XLYLK(19,528,1,0), XLYBB_MASK, PPCCOM, { BOE, BI } },
-{ "bcctrl", XLLK(19,528,1), XLYBB_MASK, PPCCOM, { BO, BI } },
{ "bcctrl-", XLYLK(19,528,0,1), XLYBB_MASK, PPCCOM, { BOE, BI } },
{ "bcctrl+", XLYLK(19,528,1,1), XLYBB_MASK, PPCCOM, { BOE, BI } },
+{ "bcctr", XLLK(19,528,0), XLBH_MASK, PPCCOM, { BO, BI, BH } },
+{ "bcctrl", XLLK(19,528,1), XLBH_MASK, PPCCOM, { BO, BI, BH } },
{ "bcc", XLLK(19,528,0), XLBB_MASK, PWRCOM, { BO, BI } },
{ "bccl", XLLK(19,528,1), XLBB_MASK, PWRCOM, { BO, BI } },
{ "bcctre", XLLK(19,529,0), XLYBB_MASK, BOOKE64, { BO, BI } },
--
Alan Modra
IBM OzLabs - Linux Technology Centre