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x86 specific user debugging support definitions.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11508 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2005-02-28 00:44:41 +00:00
parent dd07f6001d
commit 8ae64a82eb
1 changed files with 74 additions and 0 deletions
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headers/private/kernel/arch/x86/arch_user_debugger.h Normal file
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/*
* Copyright 2005, Ingo Weinhold, bonefish@users.sf.net.
* Distributed under the terms of the MIT License.
*/
#ifndef _KERNEL_ARCH_X86_USER_DEBUGGER_H
#define _KERNEL_ARCH_X86_USER_DEBUGGER_H
// number of breakpoints the CPU supports
enum {
X86_BREAKPOINT_COUNT = 4,
};
// debug control register DR7 layout:
// 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
// LEN3 R/W3 LEN2 R/W2 LEN1 R/W1 LEN0 R/W0
//
// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
// 0 0 GD 0 0 1 GE LE G3 L3 G2 L2 G1 L1 G0 L0
//
enum {
X86_DR7_LEN3_LSB = 30, // breakpoints len and type
X86_DR7_RW3_LSB = 28, //
X86_DR7_LEN2_LSB = 26, //
X86_DR7_RW2_LSB = 24, //
X86_DR7_LEN1_LSB = 22, //
X86_DR7_RW1_LSB = 20, //
X86_DR7_LEN0_LSB = 18, //
X86_DR7_RW0_LSB = 16, //
X86_DR7_GD = 13, // general detect enable: disallows debug
// register access
X86_DR7_GE = 9, // global/local exact breakpoint
X86_DR7_LE = 8, //
X86_DR7_G3 = 7, // global/local breakpoints enable
X86_DR7_L3 = 6, //
X86_DR7_G2 = 5, //
X86_DR7_L2 = 4, //
X86_DR7_G1 = 3, //
X86_DR7_L1 = 2, //
X86_DR7_G0 = 1, //
X86_DR7_L0 = 0, //
X86_BREAKPOINTS_DISABLED_DR7
= (1 << 10) | (1 << X86_DR7_GE) | (1 << X86_DR7_LE),
// all breakpoints disabled
};
// x86 breakpoint types
enum {
X86_INSTRUCTION_BREAKPOINT = 0x0,
X86_DATA_WRITE_BREAKPOINT = 0x1,
X86_IO_READ_WRITE_BREAKPOINT = 0x2, // >= 586
X86_DATA_READ_WRITE_BREAKPOINT = 0x3,
};
// x86 breakpoint lengths
enum {
X86_BREAKPOINT_LENGTH_1 = 0x0,
X86_BREAKPOINT_LENGTH_2 = 0x1,
X86_BREAKPOINT_LENGTH_4 = 0x3,
};
struct arch_breakpoint {
void *address; // NULL, if deactivated
uint32 type; // one of the architecture types above
uint32 length; // one of the length values above
};
struct arch_team_debug_info {
struct arch_breakpoint breakpoints[X86_BREAKPOINT_COUNT];
uint32 dr7; // debug control register DR7
};
#endif // _KERNEL_ARCH_X86_USER_DEBUGGER_H