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12bfa3de63
Implement the ability to individually get and set registers for kdb and kgdb for x86. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: H. Peter Anvin <hpa@zytor.com> CC: Ingo Molnar <mingo@redhat.com> CC: x86@kernel.org
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
#ifndef _ASM_X86_KGDB_H
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#define _ASM_X86_KGDB_H
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/*
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* Copyright (C) 2001-2004 Amit S. Kale
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* Copyright (C) 2008 Wind River Systems, Inc.
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*/
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/*
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* BUFMAX defines the maximum number of characters in inbound/outbound
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* buffers at least NUMREGBYTES*2 are needed for register packets
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* Longer buffer is needed to list all threads
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*/
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#define BUFMAX 1024
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/*
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* Note that this register image is in a different order than
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* the register image that Linux produces at interrupt time.
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*
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* Linux's register image is defined by struct pt_regs in ptrace.h.
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* Just why GDB uses a different order is a historical mystery.
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*/
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#ifdef CONFIG_X86_32
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enum regnames {
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GDB_AX, /* 0 */
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GDB_CX, /* 1 */
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GDB_DX, /* 2 */
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GDB_BX, /* 3 */
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GDB_SP, /* 4 */
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GDB_BP, /* 5 */
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GDB_SI, /* 6 */
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GDB_DI, /* 7 */
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GDB_PC, /* 8 also known as eip */
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GDB_PS, /* 9 also known as eflags */
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GDB_CS, /* 10 */
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GDB_SS, /* 11 */
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GDB_DS, /* 12 */
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GDB_ES, /* 13 */
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GDB_FS, /* 14 */
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GDB_GS, /* 15 */
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};
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#define GDB_ORIG_AX 41
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#define DBG_MAX_REG_NUM 16
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#define NUMREGBYTES ((GDB_GS+1)*4)
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#else /* ! CONFIG_X86_32 */
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enum regnames {
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GDB_AX, /* 0 */
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GDB_BX, /* 1 */
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GDB_CX, /* 2 */
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GDB_DX, /* 3 */
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GDB_SI, /* 4 */
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GDB_DI, /* 5 */
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GDB_BP, /* 6 */
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GDB_SP, /* 7 */
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GDB_R8, /* 8 */
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GDB_R9, /* 9 */
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GDB_R10, /* 10 */
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GDB_R11, /* 11 */
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GDB_R12, /* 12 */
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GDB_R13, /* 13 */
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GDB_R14, /* 14 */
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GDB_R15, /* 15 */
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GDB_PC, /* 16 */
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GDB_PS, /* 17 */
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GDB_CS, /* 18 */
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GDB_SS, /* 19 */
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};
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#define GDB_ORIG_AX 57
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#define DBG_MAX_REG_NUM 20
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/* 17 64 bit regs and 3 32 bit regs */
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#define NUMREGBYTES ((17 * 8) + (3 * 4))
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#endif /* ! CONFIG_X86_32 */
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static inline void arch_kgdb_breakpoint(void)
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{
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asm(" int $3");
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}
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#define BREAK_INSTR_SIZE 1
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#define CACHE_FLUSH_IS_SAFE 1
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extern int kgdb_ll_trap(int cmd, const char *str,
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struct pt_regs *regs, long err, int trap, int sig);
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#endif /* _ASM_X86_KGDB_H */
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