File: [Development] / linux-2.6-xfs / include / asm-x86 / kdbprivate.h (download)
Revision 1.2, Mon Aug 4 17:03:13 2008 UTC (9 years, 2 months ago) by lachlan.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +240 -4
lines
Merge up to 2.6.26
Merge of 2.6.x-xfs-melb:linux:31804b by kenmcd.
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#ifndef _ASM_KDBPRIVATE_H
#define _ASM_KDBPRIVATE_H
/*
* Kernel Debugger Architecture Dependent (x86) Private Headers
*
* 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.
*
* Copyright (c) 1999-2008 Silicon Graphics, Inc. All Rights Reserved.
*/
typedef unsigned char kdb_machinst_t;
/*
* KDB_MAXBPT describes the total number of breakpoints
* supported by this architecure.
*/
#define KDB_MAXBPT 16
/*
* KDB_MAXHARDBPT describes the total number of hardware
* breakpoint registers that exist.
*/
#define KDB_MAXHARDBPT 4
/* Maximum number of arguments to a function */
#define KDBA_MAXARGS 16
/*
* Support for ia32 debug registers
*/
typedef struct _kdbhard_bp {
kdb_machreg_t bph_reg; /* Register this breakpoint uses */
unsigned int bph_free:1; /* Register available for use */
unsigned int bph_data:1; /* Data Access breakpoint */
unsigned int bph_write:1; /* Write Data breakpoint */
unsigned int bph_mode:2; /* 0=inst, 1=write, 2=io, 3=read */
unsigned int bph_length:2; /* 0=1, 1=2, 2=BAD, 3=4 (bytes) */
unsigned int bph_installed; /* flag: hw bp is installed */
} kdbhard_bp_t;
#define IA32_BREAKPOINT_INSTRUCTION 0xcc
#define DR6_BT 0x00008000
#define DR6_BS 0x00004000
#define DR6_BD 0x00002000
#define DR6_B3 0x00000008
#define DR6_B2 0x00000004
#define DR6_B1 0x00000002
#define DR6_B0 0x00000001
#define DR6_DR_MASK 0x0000000F
#define DR7_RW_VAL(dr, drnum) \
(((dr) >> (16 + (4 * (drnum)))) & 0x3)
#define DR7_RW_SET(dr, drnum, rw) \
do { \
(dr) &= ~(0x3 << (16 + (4 * (drnum)))); \
(dr) |= (((rw) & 0x3) << (16 + (4 * (drnum)))); \
} while (0)
#define DR7_RW0(dr) DR7_RW_VAL(dr, 0)
#define DR7_RW0SET(dr,rw) DR7_RW_SET(dr, 0, rw)
#define DR7_RW1(dr) DR7_RW_VAL(dr, 1)
#define DR7_RW1SET(dr,rw) DR7_RW_SET(dr, 1, rw)
#define DR7_RW2(dr) DR7_RW_VAL(dr, 2)
#define DR7_RW2SET(dr,rw) DR7_RW_SET(dr, 2, rw)
#define DR7_RW3(dr) DR7_RW_VAL(dr, 3)
#define DR7_RW3SET(dr,rw) DR7_RW_SET(dr, 3, rw)
#define DR7_LEN_VAL(dr, drnum) \
(((dr) >> (18 + (4 * (drnum)))) & 0x3)
#define DR7_LEN_SET(dr, drnum, rw) \
do { \
(dr) &= ~(0x3 << (18 + (4 * (drnum)))); \
(dr) |= (((rw) & 0x3) << (18 + (4 * (drnum)))); \
} while (0)
#define DR7_LEN0(dr) DR7_LEN_VAL(dr, 0)
#define DR7_LEN0SET(dr,len) DR7_LEN_SET(dr, 0, len)
#define DR7_LEN1(dr) DR7_LEN_VAL(dr, 1)
#define DR7_LEN1SET(dr,len) DR7_LEN_SET(dr, 1, len)
#define DR7_LEN2(dr) DR7_LEN_VAL(dr, 2)
#define DR7_LEN2SET(dr,len) DR7_LEN_SET(dr, 2, len)
#define DR7_LEN3(dr) DR7_LEN_VAL(dr, 3)
#define DR7_LEN3SET(dr,len) DR7_LEN_SET(dr, 3, len)
#define DR7_G0(dr) (((dr)>>1)&0x1)
#define DR7_G0SET(dr) ((dr) |= 0x2)
#define DR7_G0CLR(dr) ((dr) &= ~0x2)
#define DR7_G1(dr) (((dr)>>3)&0x1)
#define DR7_G1SET(dr) ((dr) |= 0x8)
#define DR7_G1CLR(dr) ((dr) &= ~0x8)
#define DR7_G2(dr) (((dr)>>5)&0x1)
#define DR7_G2SET(dr) ((dr) |= 0x20)
#define DR7_G2CLR(dr) ((dr) &= ~0x20)
#define DR7_G3(dr) (((dr)>>7)&0x1)
#define DR7_G3SET(dr) ((dr) |= 0x80)
#define DR7_G3CLR(dr) ((dr) &= ~0x80)
#define DR7_L0(dr) (((dr))&0x1)
#define DR7_L0SET(dr) ((dr) |= 0x1)
#define DR7_L0CLR(dr) ((dr) &= ~0x1)
#define DR7_L1(dr) (((dr)>>2)&0x1)
#define DR7_L1SET(dr) ((dr) |= 0x4)
#define DR7_L1CLR(dr) ((dr) &= ~0x4)
#define DR7_L2(dr) (((dr)>>4)&0x1)
#define DR7_L2SET(dr) ((dr) |= 0x10)
#define DR7_L2CLR(dr) ((dr) &= ~0x10)
#define DR7_L3(dr) (((dr)>>6)&0x1)
#define DR7_L3SET(dr) ((dr) |= 0x40)
#define DR7_L3CLR(dr) ((dr) &= ~0x40)
#define DR7_GD 0x00002000 /* General Detect Enable */
#define DR7_GE 0x00000200 /* Global exact */
#define DR7_LE 0x00000100 /* Local exact */
extern kdb_machreg_t kdba_getdr6(void);
extern void kdba_putdr6(kdb_machreg_t);
extern kdb_machreg_t kdba_getdr7(void);
struct kdba_running_process {
long sp; /* KDB may be on a different stack */
long ip; /* eip when esp was set */
};
static inline
void kdba_unsave_running(struct kdba_running_process *k, struct pt_regs *regs)
{
}
struct kdb_activation_record;
extern void kdba_get_stack_info_alternate(kdb_machreg_t addr, int cpu,
struct kdb_activation_record *ar);
extern void kdba_wait_for_cpus(void);
#ifdef CONFIG_X86_32
#define DR_TYPE_EXECUTE 0x0
#define DR_TYPE_WRITE 0x1
#define DR_TYPE_IO 0x2
#define DR_TYPE_RW 0x3
/*
* Platform specific environment entries
*/
#define KDB_PLATFORM_ENV "IDMODE=x86", "BYTESPERWORD=4", "IDCOUNT=16"
/*
* Support for setjmp/longjmp
*/
#define JB_BX 0
#define JB_SI 1
#define JB_DI 2
#define JB_BP 3
#define JB_SP 4
#define JB_PC 5
typedef struct __kdb_jmp_buf {
unsigned long regs[6]; /* kdba_setjmp assumes fixed offsets here */
} kdb_jmp_buf;
extern int asmlinkage kdba_setjmp(kdb_jmp_buf *);
extern void asmlinkage kdba_longjmp(kdb_jmp_buf *, int);
#define kdba_setjmp kdba_setjmp
extern kdb_jmp_buf *kdbjmpbuf;
/* Arch specific data saved for running processes */
static inline
void kdba_save_running(struct kdba_running_process *k, struct pt_regs *regs)
{
k->sp = current_stack_pointer;
__asm__ __volatile__ ( " lea 1f,%%eax; movl %%eax,%0 ; 1: " : "=r"(k->ip) : : "eax" );
}
extern void kdb_interrupt(void);
#define KDB_INT_REGISTERS 8
#else /* CONFIG_X86_32 */
extern kdb_machreg_t kdba_getdr(int);
extern void kdba_putdr(int, kdb_machreg_t);
extern kdb_machreg_t kdb_getcr(int);
/*
* Platform specific environment entries
*/
#define KDB_PLATFORM_ENV "IDMODE=x86_64", "BYTESPERWORD=8", "IDCOUNT=16"
/*
* reg indicies for x86_64 setjmp/longjmp
*/
#define JB_RBX 0
#define JB_RBP 1
#define JB_R12 2
#define JB_R13 3
#define JB_R14 4
#define JB_R15 5
#define JB_RSP 6
#define JB_PC 7
typedef struct __kdb_jmp_buf {
unsigned long regs[8]; /* kdba_setjmp assumes fixed offsets here */
} kdb_jmp_buf;
extern int asmlinkage kdba_setjmp(kdb_jmp_buf *);
extern void asmlinkage kdba_longjmp(kdb_jmp_buf *, int);
#define kdba_setjmp kdba_setjmp
extern kdb_jmp_buf *kdbjmpbuf;
/* Arch specific data saved for running processes */
register unsigned long current_stack_pointer asm("rsp") __used;
static inline
void kdba_save_running(struct kdba_running_process *k, struct pt_regs *regs)
{
k->sp = current_stack_pointer;
__asm__ __volatile__ ( " lea 0(%%rip),%%rax; movq %%rax,%0 ; " : "=r"(k->ip) : : "rax" );
}
extern asmlinkage void kdb_interrupt(void);
#define KDB_INT_REGISTERS 16
#endif /* !CONFIG_X86_32 */
#endif /* !_ASM_KDBPRIVATE_H */
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