[PATCH] FRV: Introduce asm-offsets for FRV arch

Introduce the use of asm-offsets into the FRV architecture.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/frv/kernel/asm-offsets.c

-/* Dummy asm-offsets.c file. Required by kbuild and ready to be used - hint! */
+/*
+ * Generate definitions needed by assembly language modules.
+ * This code generates raw asm output which is post-processed
+ * to extract and format the required data.
+ */
+
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/personality.h>
+#include <asm/registers.h>
+#include <asm/ucontext.h>
+#include <asm/processor.h>
+#include <asm/thread_info.h>
+#include <asm/gdb-stub.h>
+
+#define DEFINE(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define DEF_PTREG(sym, reg) \
+        asm volatile("\n->" #sym " %0 offsetof(struct pt_regs, " #reg ")" \
+		     : : "i" (offsetof(struct pt_regs, reg)))
+
+#define DEF_IREG(sym, reg) \
+        asm volatile("\n->" #sym " %0 offsetof(struct user_context, " #reg ")" \
+		     : : "i" (offsetof(struct user_context, reg)))
+
+#define DEF_FREG(sym, reg) \
+        asm volatile("\n->" #sym " %0 offsetof(struct user_context, " #reg ")" \
+		     : : "i" (offsetof(struct user_context, reg)))
+
+#define DEF_0REG(sym, reg) \
+        asm volatile("\n->" #sym " %0 offsetof(struct frv_frame0, " #reg ")" \
+		     : : "i" (offsetof(struct frv_frame0, reg)))
+
+#define BLANK() asm volatile("\n->" : : )
+
+#define OFFSET(sym, str, mem) \
+	DEFINE(sym, offsetof(struct str, mem));
+
+void foo(void)
+{
+	/* offsets into the thread_info structure */
+	OFFSET(TI_TASK,			thread_info, task);
+	OFFSET(TI_EXEC_DOMAIN,		thread_info, exec_domain);
+	OFFSET(TI_FLAGS,		thread_info, flags);
+	OFFSET(TI_STATUS,		thread_info, status);
+	OFFSET(TI_CPU,			thread_info, cpu);
+	OFFSET(TI_PREEMPT_COUNT,	thread_info, preempt_count);
+	OFFSET(TI_ADDR_LIMIT,		thread_info, addr_limit);
+	OFFSET(TI_RESTART_BLOCK,	thread_info, restart_block);
+	BLANK();
+
+	/* offsets into register file storage */
+	DEF_PTREG(REG_PSR,		psr);
+	DEF_PTREG(REG_ISR,		isr);
+	DEF_PTREG(REG_CCR,		ccr);
+	DEF_PTREG(REG_CCCR,		cccr);
+	DEF_PTREG(REG_LR,		lr);
+	DEF_PTREG(REG_LCR,		lcr);
+	DEF_PTREG(REG_PC,		pc);
+	DEF_PTREG(REG__STATUS,		__status);
+	DEF_PTREG(REG_SYSCALLNO,	syscallno);
+	DEF_PTREG(REG_ORIG_GR8,		orig_gr8);
+	DEF_PTREG(REG_GNER0,		gner0);
+	DEF_PTREG(REG_GNER1,		gner1);
+	DEF_PTREG(REG_IACC0,		iacc0);
+	DEF_PTREG(REG_TBR,		tbr);
+	DEF_PTREG(REG_GR0,		tbr);
+	DEFINE(REG__END,		sizeof(struct pt_regs));
+	BLANK();
+
+	DEF_0REG(REG_DCR,		debug.dcr);
+	DEF_0REG(REG_IBAR0,		debug.ibar[0]);
+	DEF_0REG(REG_DBAR0,		debug.dbar[0]);
+	DEF_0REG(REG_DBDR00,		debug.dbdr[0][0]);
+	DEF_0REG(REG_DBMR00,		debug.dbmr[0][0]);
+	BLANK();
+
+	DEF_IREG(__INT_GR0,		i.gr[0]);
+	DEF_FREG(__USER_FPMEDIA,	f);
+	DEF_FREG(__FPMEDIA_FR0,		f.fr[0]);
+	DEF_FREG(__FPMEDIA_FNER0,	f.fner[0]);
+	DEF_FREG(__FPMEDIA_MSR0,	f.msr[0]);
+	DEF_FREG(__FPMEDIA_ACC0,	f.acc[0]);
+	DEF_FREG(__FPMEDIA_ACCG0,	f.accg[0]);
+	DEF_FREG(__FPMEDIA_FSR0,	f.fsr[0]);
+	BLANK();
+
+	DEFINE(NR_PT_REGS,		sizeof(struct pt_regs) / 4);
+	DEFINE(NR_USER_INT_REGS,	sizeof(struct user_int_regs) / 4);
+	DEFINE(NR_USER_FPMEDIA_REGS,	sizeof(struct user_fpmedia_regs) / 4);
+	DEFINE(NR_USER_CONTEXT,		sizeof(struct user_context) / 4);
+	DEFINE(FRV_FRAME0_SIZE,		sizeof(struct frv_frame0));
+	BLANK();
+
+	/* offsets into thread_struct */
+	OFFSET(__THREAD_FRAME,		thread_struct, frame);
+	OFFSET(__THREAD_CURR,		thread_struct, curr);
+	OFFSET(__THREAD_SP,		thread_struct, sp);
+	OFFSET(__THREAD_FP,		thread_struct, fp);
+	OFFSET(__THREAD_LR,		thread_struct, lr);
+	OFFSET(__THREAD_PC,		thread_struct, pc);
+	OFFSET(__THREAD_GR16,		thread_struct, gr[0]);
+	OFFSET(__THREAD_SCHED_LR,	thread_struct, sched_lr);
+	OFFSET(__THREAD_FRAME0,		thread_struct, frame0);
+	OFFSET(__THREAD_USER,		thread_struct, user);
+	BLANK();
+
+	/* offsets into frv_debug_status */
+	OFFSET(DEBUG_BPSR,		frv_debug_status, bpsr);
+	OFFSET(DEBUG_DCR,		frv_debug_status, dcr);
+	OFFSET(DEBUG_BRR,		frv_debug_status, brr);
+	OFFSET(DEBUG_NMAR,		frv_debug_status, nmar);
+	BLANK();
+}

arch/frv/kernel/break.S

@@ -9,11 +9,11 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#include <linux/sys.h>
 #include <linux/linkage.h>
 #include <asm/setup.h>
 #include <asm/segment.h>
 #include <asm/ptrace.h>
+#include <asm/thread_info.h>
 #include <asm/spr-regs.h>
 
 #include <asm/errno.h>
@@ -23,13 +23,11 @@
 #
 	.section	.bss.stack
 	.globl		__break_user_context
-	.balign		8192
+	.balign		THREAD_SIZE
 __break_stack:
-	.space		(8192 - (USER_CONTEXT_SIZE + REG__DEBUG_XTRA)) & ~7
-__break_stack_tos:
-	.space		REG__DEBUG_XTRA
-__break_user_context:
-	.space		USER_CONTEXT_SIZE
+	.space		THREAD_SIZE - FRV_FRAME0_SIZE
+__break_frame_0:
+	.space		FRV_FRAME0_SIZE
 
 #
 # miscellaneous variables
@@ -74,8 +72,8 @@ __entry_break:
 #endif
 	LEDS		0x1001,gr31
 
-	sethi.p		%hi(__break_user_context),gr31
-	setlo		%lo(__break_user_context),gr31
+	sethi.p		%hi(__break_frame_0),gr31
+	setlo		%lo(__break_frame_0),gr31
 
 	stdi		gr2,@(gr31,#REG_GR(2))
 	movsg		ccr,gr3
@@ -585,8 +583,8 @@ __break_continue:
 	# set up the kernel stack pointer
 	sti		sp,@(gr31,#REG_SP)
 
-	sethi.p		%hi(__break_stack_tos),sp
-	setlo		%lo(__break_stack_tos),sp
+	sethi.p		%hi(__break_frame_0),sp
+	setlo		%lo(__break_frame_0),sp
 
 	# finish building the exception frame
 	stdi		gr4 ,@(gr31,#REG_GR(4))
@@ -651,9 +649,12 @@ __break_continue:
 	movsg		nmar,gr5
 	movsg		dcr,gr6
 
-	stdi		gr4 ,@(gr31,#REG_BRR)
-	sti		gr19,@(gr31,#REG_BPSR)
-	sti.p		gr6 ,@(gr31,#REG_DCR)
+	sethi.p		%hi(__debug_status),gr7
+	setlo		%lo(__debug_status),gr7
+
+	stdi		gr4 ,@(gr7,#DEBUG_BRR)
+	sti		gr19,@(gr7,#DEBUG_BPSR)
+	sti.p		gr6 ,@(gr7,#DEBUG_DCR)
 
 	# trap exceptions during break handling and disable h/w breakpoints/watchpoints
 	sethi		%hi(DCR_EBE),gr5
@@ -698,7 +699,10 @@ __break_continue:
 	lddi		@(gr31,#REG_PSR) ,gr22
 	ldi		@(gr31,#REG_PC)  ,gr21
 	ldi		@(gr31,#REG_TBR) ,gr20
-	ldi.p		@(gr31,#REG_DCR) ,gr6
+
+	sethi.p		%hi(__debug_status),gr6
+	setlo		%lo(__debug_status),gr6
+	ldi.p		@(gr6,#DEBUG_DCR) ,gr6
 
 	andi		gr22,#PSR_S,gr19		/* rebuild BPSR */
 	andi.p		gr22,#PSR_ET,gr5

arch/frv/kernel/debug-stub.c

@@ -39,10 +39,9 @@ do {						\
 	gdbstub_do_rx();			\
 } while(!FLOWCTL_QUERY(LINE))
 
-static void __init debug_stub_init(void);
+struct frv_debug_status __debug_status;
 
-extern asmlinkage void __break_hijack_kernel_event(void);
-extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
+static void __init debug_stub_init(void);
 
 /*****************************************************************************/
 /*
@@ -67,7 +66,7 @@ asmlinkage void debug_stub(void)
 		__set_HSR(0, hsr0 & ~HSR0_ETMD);
 
 	/* disable single stepping */
-	__debug_regs->dcr &= ~DCR_SE;
+	__debug_status.dcr &= ~DCR_SE;
 
 	/* kernel mode can propose an exception be handled in debug mode by jumping to a special
 	 * location */
@@ -76,8 +75,8 @@ asmlinkage void debug_stub(void)
 		 * the top kernel context */
 		*__debug_frame = *__frame;
 		__frame = __debug_frame->next_frame;
-		__debug_regs->brr = (__debug_frame->tbr & TBR_TT) << 12;
-		__debug_regs->brr |= BRR_EB;
+		__debug_status.brr = (__debug_frame->tbr & TBR_TT) << 12;
+		__debug_status.brr |= BRR_EB;
 	}
 
 	if (__debug_frame->pc == (unsigned long) __debug_bug_trap + 4) {
@@ -124,7 +123,7 @@ static void __init debug_stub_init(void)
 		__debug_frame->pc = (unsigned long) start_kernel;
 
 	/* enable the debug events we want to trap */
-	__debug_regs->dcr = DCR_EBE;
+	__debug_status.dcr = DCR_EBE;
 
 #ifdef CONFIG_GDBSTUB
 	gdbstub_init();

arch/frv/kernel/entry.S

@@ -27,7 +27,6 @@
  *
  */
 
-#include <linux/sys.h>
 #include <linux/linkage.h>
 #include <asm/thread_info.h>
 #include <asm/setup.h>

arch/frv/kernel/head.S

@@ -11,6 +11,7 @@
 
 #include <linux/threads.h>
 #include <linux/linkage.h>
+#include <asm/thread_info.h>
 #include <asm/ptrace.h>
 #include <asm/page.h>
 #include <asm/spr-regs.h>

arch/frv/kernel/process.c

@@ -26,6 +26,7 @@
 #include <linux/reboot.h>
 #include <linux/interrupt.h>
 
+#include <asm/asm-offsets.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
 #include <asm/setup.h>
@@ -207,7 +208,7 @@ int copy_thread(int nr, unsigned long clone_flags,
 
 	regs0 = __kernel_frame0_ptr;
 	childregs0 = (struct pt_regs *)
-		(task_stack_page(p) + THREAD_SIZE - USER_CONTEXT_SIZE);
+		(task_stack_page(p) + THREAD_SIZE - FRV_FRAME0_SIZE);
 	childregs = childregs0;
 
 	/* set up the userspace frame (the only place that the USP is stored) */

arch/frv/kernel/switch_to.S

@@ -11,6 +11,7 @@
 # 2 of the License, or (at your option) any later version.
 #
 ###############################################################################
+
 #include <linux/linkage.h>
 #include <asm/thread_info.h>
 #include <asm/processor.h>
@@ -30,7 +31,7 @@
 	# address of frame 0 (userspace) on current kernel stack
 	.globl		__kernel_frame0_ptr
 __kernel_frame0_ptr:
-	.long		init_thread_union + THREAD_SIZE - USER_CONTEXT_SIZE
+	.long		init_thread_union + THREAD_SIZE - FRV_FRAME0_SIZE
 
 	# address of current task
 	.globl		__kernel_current_task

arch/frv/kernel/traps.c

@@ -20,6 +20,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 
+#include <asm/asm-offsets.h>
 #include <asm/setup.h>
 #include <asm/fpu.h>
 #include <asm/system.h>
@@ -279,20 +280,20 @@ static const char *regnames[] = {
 
 void show_regs(struct pt_regs *regs)
 {
-	uint32_t *reg;
+	unsigned long *reg;
 	int loop;
 
 	printk("\n");
 
-	printk("Frame: @%08x [%s]\n",
-	       (uint32_t) regs,
+	printk("Frame: @%08lx [%s]\n",
+	       (unsigned long) regs,
 	       regs->psr & PSR_S ? "kernel" : "user");
 
-	reg = (uint32_t *) regs;
-	for (loop = 0; loop < REG__END; loop++) {
-		printk("%s %08x", regnames[loop + 0], reg[loop + 0]);
+	reg = (unsigned long *) regs;
+	for (loop = 0; loop < NR_PT_REGS; loop++) {
+		printk("%s %08lx", regnames[loop + 0], reg[loop + 0]);
 
-		if (loop == REG__END - 1 || loop % 5 == 4)
+		if (loop == NR_PT_REGS - 1 || loop % 5 == 4)
 			printk("\n");
 		else
 			printk(" | ");
@@ -328,7 +329,7 @@ void die_if_kernel(const char *str, ...)
  */
 static void show_backtrace_regs(struct pt_regs *frame)
 {
-	uint32_t *reg;
+	unsigned long *reg;
 	int loop;
 
 	/* print the registers for this frame */
@@ -336,11 +337,11 @@ static void show_backtrace_regs(struct pt_regs *frame)
 	       frame->psr & PSR_S ? "Kernel Mode" : "User Mode",
 	       frame);
 
-	reg = (uint32_t *) frame;
-	for (loop = 0; loop < REG__END; loop++) {
-		printk("%s %08x", regnames[loop + 0], reg[loop + 0]);
+	reg = (unsigned long *) frame;
+	for (loop = 0; loop < NR_PT_REGS; loop++) {
+		printk("%s %08lx", regnames[loop + 0], reg[loop + 0]);
 
-		if (loop == REG__END - 1 || loop % 5 == 4)
+		if (loop == NR_PT_REGS - 1 || loop % 5 == 4)
 			printk("\n");
 		else
 			printk(" | ");

include/asm-frv/gdb-stub.h

@@ -89,6 +89,7 @@ extern void gdbstub_do_rx(void);
 
 extern asmlinkage void __debug_stub_init_break(void);
 extern asmlinkage void __break_hijack_kernel_event(void);
+extern asmlinkage void __break_hijack_kernel_event_breaks_here(void);
 extern asmlinkage void start_kernel(void);
 
 extern asmlinkage void gdbstub_rx_handler(void);
@@ -114,5 +115,26 @@ extern void console_set_baud(unsigned baud);
 #define gdbstub_proto(FMT,...) ({ 0; })
 #endif
 
+/*
+ * we dedicate GR31 to keeping a pointer to the gdbstub exception frame
+ * - gr31 is destroyed on entry to the gdbstub if !MMU
+ * - gr31 is saved in scr3 on entry to the gdbstub if in !MMU
+ */
+register struct frv_frame0 *__debug_frame0 asm("gr31");
+
+#define __debug_frame		(&__debug_frame0->regs)
+#define __debug_user_context	(&__debug_frame0->uc)
+#define __debug_regs		(&__debug_frame0->debug)
+#define __debug_reg(X)		((unsigned long *) ((unsigned long) &__debug_frame0 + (X)))
+
+struct frv_debug_status {
+	unsigned long		bpsr;
+	unsigned long		dcr;
+	unsigned long		brr;
+	unsigned long		nmar;
+};
+
+extern struct frv_debug_status __debug_status;
+
 #endif /* _LANGUAGE_ASSEMBLY */
 #endif /* __ASM_GDB_STUB_H */

include/asm-frv/ptrace.h

@@ -62,18 +62,10 @@
 #ifndef __ASSEMBLY__
 
 /*
- * dedicate GR28; to keeping the a pointer to the current exception frame
+ * we dedicate GR28 to keeping a pointer to the current exception frame
+ * - gr28 is destroyed on entry to the kernel from userspace
  */
 register struct pt_regs *__frame asm("gr28");
-register struct pt_regs *__debug_frame asm("gr31");
-
-#ifndef container_of
-#define container_of(ptr, type, member) ({			\
-        const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
-        (type *)( (char *)__mptr - offsetof(type,member) );})
-#endif
-
-#define __debug_regs container_of(__debug_frame, struct pt_debug_regs, normal_regs)
 
 #define user_mode(regs)			(!((regs)->psr & PSR_S))
 #define instruction_pointer(regs)	((regs)->pc)

include/asm-frv/registers.h

@@ -23,7 +23,13 @@
  *
  *	+0x2000	+----------------------
  *		| union {
- *		|	struct user_context
+ *		|	struct frv_frame0 {
+ *		|		struct user_context {
+ *		|			struct user_int_regs
+ *		|			struct user_fpmedia_regs
+ *		|		}
+ *		|		struct frv_debug_regs
+ *		|	}
  *		|	struct pt_regs [user exception]
  *		| }
  *		+---------------------- <-- __kernel_frame0_ptr (maybe GR28)
@@ -51,11 +57,11 @@
 #define _ASM_REGISTERS_H
 
 #ifndef __ASSEMBLY__
-#define __OFFSET(X)	(X)
+#define __OFFSET(X,N)	((X)+(N)*4)
 #define __OFFSETC(X,N)	xxxxxxxxxxxxxxxxxxxxxxxx
 #else
-#define __OFFSET(X)	((X)*4)
-#define __OFFSETC(X,N)	((X)*4+(N))
+#define __OFFSET(X,N)	((X)+(N)*4)
+#define __OFFSETC(X,N)	((X)+(N))
 #endif
 
 /*****************************************************************************/
@@ -117,30 +123,13 @@ struct pt_regs {
 
 #endif
 
-#define REG_PSR		__OFFSET( 0)	/* Processor Status Register */
-#define REG_ISR		__OFFSET( 1)	/* Integer Status Register */
-#define REG_CCR		__OFFSET( 2)	/* Condition Code Register */
-#define REG_CCCR	__OFFSET( 3)	/* Condition Code for Conditional Insns Register */
-#define REG_LR		__OFFSET( 4)	/* Link Register */
-#define REG_LCR		__OFFSET( 5)	/* Loop Count Register */
-#define REG_PC		__OFFSET( 6)	/* Program Counter */
-
-#define REG__STATUS	__OFFSET( 7)	/* exception status */
 #define REG__STATUS_STEP	0x00000001	/* - reenable single stepping on return */
 #define REG__STATUS_STEPPED	0x00000002	/* - single step caused exception */
 #define REG__STATUS_BROKE	0x00000004	/* - BREAK insn caused exception */
 #define REG__STATUS_SYSC_ENTRY	0x40000000	/* - T on syscall entry (ptrace.c only) */
 #define REG__STATUS_SYSC_EXIT	0x80000000	/* - T on syscall exit (ptrace.c only) */
 
-#define REG_SYSCALLNO	__OFFSET( 8)	/* syscall number or -1 */
-#define REG_ORIG_GR8	__OFFSET( 9)	/* saved GR8 for signal handling */
-#define REG_GNER0	__OFFSET(10)
-#define REG_GNER1	__OFFSET(11)
-#define REG_IACC0	__OFFSET(12)
-
-#define REG_TBR		__OFFSET(14)	/* Trap Vector Register */
-#define REG_GR(R)	__OFFSET((14+(R)))
-#define REG__END	REG_GR(32)
+#define REG_GR(R)	__OFFSET(REG_GR0, (R))
 
 #define REG_SP		REG_GR(1)
 #define REG_FP		REG_GR(2)
@@ -149,27 +138,21 @@ struct pt_regs {
 
 /*****************************************************************************/
 /*
- * extension tacked in front of the exception frame in debug mode
+ * debugging registers
  */
 #ifndef __ASSEMBLY__
 
-struct pt_debug_regs
+struct frv_debug_regs
 {
-	unsigned long		bpsr;
 	unsigned long		dcr;
-	unsigned long		brr;
-	unsigned long		nmar;
-	struct pt_regs		normal_regs;
+	unsigned long		ibar[4] __attribute__((aligned(8)));
+	unsigned long		dbar[4] __attribute__((aligned(8)));
+	unsigned long		dbdr[4][4] __attribute__((aligned(8)));
+	unsigned long		dbmr[4][4] __attribute__((aligned(8)));
 } __attribute__((aligned(8)));
 
 #endif
 
-#define REG_NMAR		__OFFSET(-1)
-#define REG_BRR			__OFFSET(-2)
-#define REG_DCR			__OFFSET(-3)
-#define REG_BPSR		__OFFSET(-4)
-#define REG__DEBUG_XTRA		__OFFSET(4)
-
 /*****************************************************************************/
 /*
  * userspace registers
@@ -223,33 +206,27 @@ struct user_context
 	void *extension;
 } __attribute__((aligned(8)));
 
+struct frv_frame0 {
+	union {
+		struct pt_regs		regs;
+		struct user_context	uc;
+	};
+
+	struct frv_debug_regs		debug;
+
+} __attribute__((aligned(32)));
+
 #endif
 
-#define NR_USER_INT_REGS	(14 + 64)
-#define NR_USER_FPMEDIA_REGS	(64 + 2 + 2 + 8 + 8/4 + 1)
-#define NR_USER_CONTEXT		(NR_USER_INT_REGS + NR_USER_FPMEDIA_REGS + 1)
-
-#define USER_CONTEXT_SIZE	(((NR_USER_CONTEXT + 1) & ~1) * 4)
-
-#define __THREAD_FRAME		__OFFSET(0)
-#define __THREAD_CURR		__OFFSET(1)
-#define __THREAD_SP		__OFFSET(2)
-#define __THREAD_FP		__OFFSET(3)
-#define __THREAD_LR		__OFFSET(4)
-#define __THREAD_PC		__OFFSET(5)
-#define __THREAD_GR(R)		__OFFSET(6 + (R) - 16)
-#define __THREAD_FRAME0		__OFFSET(19)
-#define __THREAD_USER		__OFFSET(19)
-
-#define __USER_INT		__OFFSET(0)
-#define __INT_GR(R)		__OFFSET(14 + (R))
-
-#define __USER_FPMEDIA		__OFFSET(NR_USER_INT_REGS)
-#define __FPMEDIA_FR(R)		__OFFSET(NR_USER_INT_REGS + (R))
-#define __FPMEDIA_FNER(R)	__OFFSET(NR_USER_INT_REGS + 64 + (R))
-#define __FPMEDIA_MSR(R)	__OFFSET(NR_USER_INT_REGS + 66 + (R))
-#define __FPMEDIA_ACC(R)	__OFFSET(NR_USER_INT_REGS + 68 + (R))
-#define __FPMEDIA_ACCG(R)	__OFFSETC(NR_USER_INT_REGS + 76, (R))
-#define __FPMEDIA_FSR(R)	__OFFSET(NR_USER_INT_REGS + 78 + (R))
+#define __INT_GR(R)		__OFFSET(__INT_GR0,		(R))
+
+#define __FPMEDIA_FR(R)		__OFFSET(__FPMEDIA_FR0,		(R))
+#define __FPMEDIA_FNER(R)	__OFFSET(__FPMEDIA_FNER0,	(R))
+#define __FPMEDIA_MSR(R)	__OFFSET(__FPMEDIA_MSR0,	(R))
+#define __FPMEDIA_ACC(R)	__OFFSET(__FPMEDIA_ACC0,	(R))
+#define __FPMEDIA_ACCG(R)	__OFFSETC(__FPMEDIA_ACCG0,	(R))
+#define __FPMEDIA_FSR(R)	__OFFSET(__FPMEDIA_FSR0,	(R))
+
+#define __THREAD_GR(R)		__OFFSET(__THREAD_GR16,		(R) - 16)
 
 #endif /* _ASM_REGISTERS_H */

include/asm-frv/thread_info.h

@@ -19,6 +19,8 @@
 #include <asm/processor.h>
 #endif
 
+#define THREAD_SIZE		8192
+
 /*
  * low level task data that entry.S needs immediate access to
  * - this struct should fit entirely inside of one cache line
@@ -46,15 +48,7 @@ struct thread_info {
 
 #else /* !__ASSEMBLY__ */
 
-/* offsets into the thread_info struct for assembly code access */
-#define TI_TASK			0x00000000
-#define TI_EXEC_DOMAIN		0x00000004
-#define TI_FLAGS		0x00000008
-#define TI_STATUS		0x0000000C
-#define TI_CPU			0x00000010
-#define TI_PRE_COUNT		0x00000014
-#define TI_ADDR_LIMIT		0x00000018
-#define TI_RESTART_BLOCK	0x0000001C
+#include <asm/asm-offsets.h>
 
 #endif
 
@@ -83,12 +77,6 @@ struct thread_info {
 #define init_thread_info	(init_thread_union.thread_info)
 #define init_stack		(init_thread_union.stack)
 
-#ifdef CONFIG_SMALL_TASKS
-#define THREAD_SIZE		4096
-#else
-#define THREAD_SIZE		8192
-#endif
-
 /* how to get the thread information struct from C */
 register struct thread_info *__current_thread_info asm("gr15");
 
@@ -111,11 +99,7 @@ register struct thread_info *__current_thread_info asm("gr15");
 
 #define free_thread_info(info)	kfree(info)
 
-#else /* !__ASSEMBLY__ */
-
-#define THREAD_SIZE	8192
-
-#endif
+#endif /* __ASSEMBLY__ */
 
 /*
  * thread information flags