Merge branch 'linux-2.6'

12 files changed, 76 insertions, 79 deletions

diff --git a/arch/sh/kernel/cpu/sh2a/Makefile b/arch/sh/kernel/cpu/sh2a/Makefile
index 350972ae9410..965fa2572b23 100644
--- a/arch/sh/kernel/cpu/sh2a/Makefile
+++ b/arch/sh/kernel/cpu/sh2a/Makefile
@@ -2,9 +2,8 @@
 # Makefile for the Linux/SuperH SH-2A backends.
 #
 
-obj-y	:= common.o probe.o
+obj-y	:= common.o probe.o opcode_helper.o
 
-common-y	+= $(addprefix ../sh2/, ex.o)
-common-y	+= $(addprefix ../sh2/, entry.o)
+common-y	+= $(addprefix ../sh2/, ex.o entry.o)
 
 obj-$(CONFIG_CPU_SUBTYPE_SH7206) += setup-sh7206.o clock-sh7206.o
diff --git a/arch/sh/kernel/cpu/sh2a/opcode_helper.c b/arch/sh/kernel/cpu/sh2a/opcode_helper.c
new file mode 100644
index 000000000000..9704b7926d8b
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh2a/opcode_helper.c
@@ -0,0 +1,55 @@
+/*
+ * arch/sh/kernel/cpu/sh2a/opcode_helper.c
+ *
+ * Helper for the SH-2A 32-bit opcodes.
+ *
+ *  Copyright (C) 2007  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/kernel.h>
+#include <asm/system.h>
+
+/*
+ * Instructions on SH are generally fixed at 16-bits, however, SH-2A
+ * introduces some 32-bit instructions. Since there are no real
+ * constraints on their use (and they can be mixed and matched), we need
+ * to check the instruction encoding to work out if it's a true 32-bit
+ * instruction or not.
+ *
+ * Presently, 32-bit opcodes have only slight variations in what the
+ * actual encoding looks like in the first-half of the instruction, which
+ * makes it fairly straightforward to differentiate from the 16-bit ones.
+ *
+ * First 16-bits of encoding		Used by
+ *
+ *	0011nnnnmmmm0001	mov.b, mov.w, mov.l, fmov.d,
+ *				fmov.s, movu.b, movu.w
+ *
+ *	0011nnnn0iii1001        bclr.b, bld.b, bset.b, bst.b, band.b,
+ *				bandnot.b, bldnot.b, bor.b, bornot.b,
+ *				bxor.b
+ *
+ *	0000nnnniiii0000        movi20
+ *	0000nnnniiii0001        movi20s
+ */
+unsigned int instruction_size(unsigned int insn)
+{
+	/* Look for the common cases */
+	switch ((insn & 0xf00f)) {
+	case 0x0000:	/* movi20 */
+	case 0x0001:	/* movi20s */
+	case 0x3001:	/* 32-bit mov/fmov/movu variants */
+		return 4;
+	}
+
+	/* And the special cases.. */
+	switch ((insn & 0xf08f)) {
+	case 0x3009:	/* 32-bit b*.b bit operations */
+		return 4;
+	}
+
+	return 2;
+}
diff --git a/arch/sh/kernel/cpu/sh2a/probe.c b/arch/sh/kernel/cpu/sh2a/probe.c
index 426f6db01fc6..f455c3509789 100644
--- a/arch/sh/kernel/cpu/sh2a/probe.c
+++ b/arch/sh/kernel/cpu/sh2a/probe.c
@@ -18,6 +18,7 @@ int __init detect_cpu_and_cache_system(void)
 {
 	/* Just SH7206 for now .. */
 	current_cpu_data.type			= CPU_SH7206;
+	current_cpu_data.flags			|= CPU_HAS_OP32;
 
 	current_cpu_data.dcache.ways		= 4;
 	current_cpu_data.dcache.way_incr	= (1 << 11);
diff --git a/arch/sh/kernel/cpu/sh3/entry.S b/arch/sh/kernel/cpu/sh3/entry.S
index f3e827f29a46..832c0b4a1e6c 100644
--- a/arch/sh/kernel/cpu/sh3/entry.S
+++ b/arch/sh/kernel/cpu/sh3/entry.S
@@ -1,5 +1,5 @@
 /*
- * arch/sh/kernel/entry.S
+ * arch/sh/kernel/cpu/sh3/entry.S
  *
  *  Copyright (C) 1999, 2000, 2002  Niibe Yutaka
  *  Copyright (C) 2003 - 2006  Paul Mundt
diff --git a/arch/sh/kernel/cpu/sh3/ex.S b/arch/sh/kernel/cpu/sh3/ex.S
index ba3082d640b5..2b2a9e02fb75 100644
--- a/arch/sh/kernel/cpu/sh3/ex.S
+++ b/arch/sh/kernel/cpu/sh3/ex.S
@@ -1,7 +1,7 @@
 /*
  *  arch/sh/kernel/cpu/sh3/ex.S
  *
- *  The SH-3 exception vector table.
+ *  The SH-3 and SH-4 exception vector table.
 
  *  Copyright (C) 1999, 2000, 2002  Niibe Yutaka
  *  Copyright (C) 2003 - 2006  Paul Mundt
@@ -9,7 +9,6 @@
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
- *
  */
 #include <linux/linkage.h>
 
@@ -36,8 +35,12 @@ ENTRY(exception_handling_table)
 	.long	exception_error	! address error load
 	.long	exception_error	! address error store	/* 100 */
 #endif
-	.long	exception_error	! fpu_exception	/* 120 */
-	.long	exception_error			/* 140 */
+#if defined(CONFIG_SH_FPU)
+	.long	do_fpu_error		/* 120 */
+#else
+	.long	exception_error		/* 120 */
+#endif
+	.long	exception_error		/* 140 */
 	.long	system_call	! Unconditional Trap	 /* 160 */
 	.long	exception_error	! reserved_instruction (filled by trap_init) /* 180 */
 	.long	exception_error	! illegal_slot_instruction (filled by trap_init) /*1A0*/
@@ -55,4 +58,4 @@ ENTRY(user_break_point_trap)
 	 * away offsets can be manually inserted in to their appropriate
 	 * location via set_exception_table_{evt,vec}().
 	 */
-	.balign 4096,0,4096
+	.balign	4096,0,4096
diff --git a/arch/sh/kernel/cpu/sh4/Makefile b/arch/sh/kernel/cpu/sh4/Makefile
index 19ca68c71884..8add10bd8268 100644
--- a/arch/sh/kernel/cpu/sh4/Makefile
+++ b/arch/sh/kernel/cpu/sh4/Makefile
@@ -2,10 +2,10 @@
 # Makefile for the Linux/SuperH SH-4 backends.
 #
 
-obj-y	:= ex.o probe.o common.o
-common-y	+= $(addprefix ../sh3/, entry.o)
+obj-y	:= probe.o common.o
+common-y	+= $(addprefix ../sh3/, entry.o ex.o)
 
-obj-$(CONFIG_SH_FPU)                    += fpu.o
+obj-$(CONFIG_SH_FPU)			+= fpu.o
 obj-$(CONFIG_SH_STORE_QUEUES)		+= sq.o
 
 # CPU subtype setup
diff --git a/arch/sh/kernel/cpu/sh4/ex.S b/arch/sh/kernel/cpu/sh4/ex.S
deleted file mode 100644
index ac8ab57413cc..000000000000
--- a/arch/sh/kernel/cpu/sh4/ex.S
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- *  arch/sh/kernel/cpu/sh4/ex.S
- *
- *  The SH-4 exception vector table.
-
- *  Copyright (C) 1999, 2000, 2002  Niibe Yutaka
- *  Copyright (C) 2003 - 2006  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- */
-#include <linux/linkage.h>
-
-	.align 2
-	.data
-
-ENTRY(exception_handling_table)
-	.long	exception_error		/* 000 */
-	.long	exception_error
-#if defined(CONFIG_MMU)
-	.long	tlb_miss_load		/* 040 */
-	.long	tlb_miss_store
-	.long	initial_page_write
-	.long	tlb_protection_violation_load
-	.long	tlb_protection_violation_store
-	.long	address_error_load
-	.long	address_error_store	/* 100 */
-#else
-	.long	exception_error	! tlb miss load		/* 040 */
-	.long	exception_error	! tlb miss store
-	.long	exception_error	! initial page write
-	.long	exception_error	! tlb prot violation load
-	.long	exception_error	! tlb prot violation store
-	.long	exception_error	! address error load
-	.long	exception_error	! address error store	/* 100 */
-#endif
-#if defined(CONFIG_SH_FPU)
-	.long	do_fpu_error		/* 120 */
-#else
-	.long	exception_error		/* 120 */
-#endif
-	.long	exception_error		/* 140 */
-	.long	system_call	! Unconditional Trap	 /* 160 */
-	.long	exception_error	! reserved_instruction (filled by trap_init) /* 180 */
-	.long	exception_error	! illegal_slot_instruction (filled by trap_init) /*1A0*/
-ENTRY(nmi_slot)
-#if defined (CONFIG_KGDB_NMI)
-	.long	debug_enter	/* 1C0 */	! Allow trap to debugger
-#else
-	.long	exception_none	/* 1C0 */	! Not implemented yet
-#endif
-ENTRY(user_break_point_trap)
-	.long	break_point_trap	/* 1E0 */
-
-	/*
-	 * Pad the remainder of the table out, exceptions residing in far
-	 * away offsets can be manually inserted in to their appropriate
-	 * location via set_exception_table_{evt,vec}().
-	 */
-	.balign	4096,0,4096
diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c
index 7624677f6628..d61dd599169f 100644
--- a/arch/sh/kernel/cpu/sh4/fpu.c
+++ b/arch/sh/kernel/cpu/sh4/fpu.c
@@ -16,6 +16,7 @@
 #include <linux/sched.h>
 #include <linux/signal.h>
 #include <asm/processor.h>
+#include <asm/system.h>
 #include <asm/io.h>
 
 /* The PR (precision) bit in the FP Status Register must be clear when
@@ -265,7 +266,7 @@ ieee_fpe_handler (struct pt_regs *regs)
 		nextpc = regs->pr;
 		finsn = *(unsigned short *) (regs->pc + 2);
 	} else {
-		nextpc = regs->pc + 2;
+		nextpc = regs->pc + instruction_size(insn);
 		finsn = insn;
 	}
 
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh73180.c b/arch/sh/kernel/cpu/sh4a/clock-sh73180.c
index 2fa5cb2ae68d..6d5ba373a75e 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh73180.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh73180.c
@@ -1,5 +1,5 @@
 /*
- * arch/sh/kernel/cpu/sh4/clock-sh73180.c
+ * arch/sh/kernel/cpu/sh4a/clock-sh73180.c
  *
  * SH73180 support for the clock framework
  *
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
index 1707a213f0cf..7adc4f16e95a 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7343.c
@@ -1,5 +1,5 @@
 /*
- * arch/sh/kernel/cpu/sh4/clock-sh7343.c
+ * arch/sh/kernel/cpu/sh4a/clock-sh7343.c
  *
  * SH7343/SH7722 support for the clock framework
  *
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7770.c b/arch/sh/kernel/cpu/sh4a/clock-sh7770.c
index c8694bac6477..8e236062c721 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7770.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7770.c
@@ -1,5 +1,5 @@
 /*
- * arch/sh/kernel/cpu/sh4/clock-sh7770.c
+ * arch/sh/kernel/cpu/sh4a/clock-sh7770.c
  *
  * SH7770 support for the clock framework
  *
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7780.c b/arch/sh/kernel/cpu/sh4a/clock-sh7780.c
index 9e6a216750c8..01f3da619d3d 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7780.c
@@ -1,5 +1,5 @@
 /*
- * arch/sh/kernel/cpu/sh4/clock-sh7780.c
+ * arch/sh/kernel/cpu/sh4a/clock-sh7780.c
  *
  * SH7780 support for the clock framework
  *