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

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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>
This commit is contained in:
David Howells
2006-07-10 04:44:55 -07:00
committed by Linus Torvalds
parent 6d8c4e3b01
commit 84e8cd6dbc
13 changed files with 311 additions and 195 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/asm-frv/gdb-stub.h
+22
View File
@@ -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
+2 -10
View File
@@ -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
+35 -58
View File
@@ -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 __INT_GR(R) __OFFSET(__INT_GR0, (R))
#define USER_CONTEXT_SIZE (((NR_USER_CONTEXT + 1) & ~1) * 4)
#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_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 __THREAD_GR(R) __OFFSET(__THREAD_GR16, (R) - 16)
#endif /* _ASM_REGISTERS_H */
include/asm-frv/thread_info.h
+4 -20
View File
@@ -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