haiku/headers/private/kernel/arch/x86/arch_user_debugger.h

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/*
* Copyright 2005-2011, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef _KERNEL_ARCH_X86_USER_DEBUGGER_H
#define _KERNEL_ARCH_X86_USER_DEBUGGER_H
Merged branch haiku/branches/developer/bonefish/optimization revision 23139 into trunk, with roughly the following changes (for details svn log the branch): * The int 99 syscall handler is now fully in assembly. * Added a sysenter/sysexit handler and use it on Pentiums that support it (via commpage). * Got rid of i386_handle_trap(). A bit of functionality was moved into the assembly handler which now uses a jump table to call C functions handling the respective interrupt. * Some optimizations to get user debugger support code out of the interrupt handling path. * Introduced a thread::flags fields which allows to skip handling of rare events (signals, user debug enabling/disabling) on the common interrupt handling path. * Got rid of the explicit iframe stack. The iframes can still be retrieved by iterating through the stack frames. * Made the commpage an architecture independent feature. It's used for the real time data stuff (instead of creating a separate area). * The x86 CPU modules can now provide processor optimized versions for common functions (currently memcpy() only). They are used in the kernel and are provided to the userland via commpage entries. * Introduced build system feature allowing easy use of C structure member offsets in assembly code. Changes after merging: * Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp (caused by refactoring and introduction of "call" debugger command). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-11 03:36:44 +03:00
#define ARCH_INIT_USER_DEBUG x86_init_user_debug
// number of breakpoints the CPU supports
// On 32-bit, DR3 is used to hold the Thread*.
#ifdef __x86_64__
# define X86_BREAKPOINT_COUNT 4
#else
# define X86_BREAKPOINT_COUNT 3
#endif
// debug status register DR6
enum {
X86_DR6_B0 = 0, // breakpoint condition detected
X86_DR6_B1 = 1, //
X86_DR6_B2 = 2, //
X86_DR6_B3 = 3, //
X86_DR6_BD = 13, // debug register access detected
X86_DR6_BS = 14, // single step
X86_DR6_BT = 15, // task switch
X86_DR6_BREAKPOINT_MASK = (1 << X86_DR6_B0) | (1 << X86_DR6_B1)
| (1 << X86_DR6_B2) | (1 << X86_DR6_B3),
};
// 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_L0 = 0, // local/global breakpoints enable
X86_DR7_G0 = 1, //
X86_DR7_L1 = 2, //
X86_DR7_G1 = 3, //
X86_DR7_L2 = 4, //
X86_DR7_G2 = 5, //
X86_DR7_L3 = 6, //
X86_DR7_G3 = 7, //
X86_DR7_LE = 8, // local/global exact breakpoint
X86_DR7_GE = 9, //
X86_DR7_GD = 13, // general detect enable: disallows debug
// register access
X86_DR7_RW0_LSB = 16, // breakpoints type and len
X86_DR7_LEN0_LSB = 18, //
X86_DR7_RW1_LSB = 20, //
X86_DR7_LEN1_LSB = 22, //
X86_DR7_RW2_LSB = 24, //
X86_DR7_LEN2_LSB = 26, //
X86_DR7_RW3_LSB = 28, //
X86_DR7_LEN3_LSB = 30, //
X86_BREAKPOINTS_DISABLED_DR7
= (1 << 10) | (1 << X86_DR7_GE) | (1 << X86_DR7_LE),
// all breakpoints disabled
};
// the EFLAGS flags we need
enum {
X86_EFLAGS_CF = 0, // carry flag
X86_EFLAGS_PF = 2, // parity flag
X86_EFLAGS_AF = 4, // auxiliary carry flag (adjust flag)
X86_EFLAGS_ZF = 6, // zero flag
X86_EFLAGS_SF = 7, // sign flag
X86_EFLAGS_TF = 8, // trap flag (single stepping)
X86_EFLAGS_DF = 10, // direction flag
X86_EFLAGS_OF = 11, // overflow flag
X86_EFLAGS_RF = 16, // resume flag (skips instruction breakpoint)
X86_EFLAGS_USER_SETTABLE_FLAGS
= (1 << X86_EFLAGS_CF) | (1 << X86_EFLAGS_PF) | (1 << X86_EFLAGS_AF)
| (1 << X86_EFLAGS_ZF) | (1 << X86_EFLAGS_SF) | (1 << X86_EFLAGS_DF)
| (1 << X86_EFLAGS_OF),
};
// 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
size_t type; // one of the architecture types above
size_t length; // one of the length values above
};
struct arch_team_debug_info {
struct arch_breakpoint breakpoints[X86_BREAKPOINT_COUNT];
size_t dr7; // debug control register DR7
};
struct arch_thread_debug_info {
uint32 flags;
};
// The software breakpoint instruction (int3).
extern const uint8 kX86SoftwareBreakpoint[1];
#ifdef __cplusplus
extern "C" {
#endif
struct iframe;
Merged branch haiku/branches/developer/bonefish/optimization revision 23139 into trunk, with roughly the following changes (for details svn log the branch): * The int 99 syscall handler is now fully in assembly. * Added a sysenter/sysexit handler and use it on Pentiums that support it (via commpage). * Got rid of i386_handle_trap(). A bit of functionality was moved into the assembly handler which now uses a jump table to call C functions handling the respective interrupt. * Some optimizations to get user debugger support code out of the interrupt handling path. * Introduced a thread::flags fields which allows to skip handling of rare events (signals, user debug enabling/disabling) on the common interrupt handling path. * Got rid of the explicit iframe stack. The iframes can still be retrieved by iterating through the stack frames. * Made the commpage an architecture independent feature. It's used for the real time data stuff (instead of creating a separate area). * The x86 CPU modules can now provide processor optimized versions for common functions (currently memcpy() only). They are used in the kernel and are provided to the userland via commpage entries. * Introduced build system feature allowing easy use of C structure member offsets in assembly code. Changes after merging: * Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp (caused by refactoring and introduction of "call" debugger command). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-11 03:36:44 +03:00
extern void x86_init_user_debug_at_kernel_exit(struct iframe *frame);
extern void x86_exit_user_debug_at_kernel_entry();
Merged branch haiku/branches/developer/bonefish/optimization revision 23139 into trunk, with roughly the following changes (for details svn log the branch): * The int 99 syscall handler is now fully in assembly. * Added a sysenter/sysexit handler and use it on Pentiums that support it (via commpage). * Got rid of i386_handle_trap(). A bit of functionality was moved into the assembly handler which now uses a jump table to call C functions handling the respective interrupt. * Some optimizations to get user debugger support code out of the interrupt handling path. * Introduced a thread::flags fields which allows to skip handling of rare events (signals, user debug enabling/disabling) on the common interrupt handling path. * Got rid of the explicit iframe stack. The iframes can still be retrieved by iterating through the stack frames. * Made the commpage an architecture independent feature. It's used for the real time data stuff (instead of creating a separate area). * The x86 CPU modules can now provide processor optimized versions for common functions (currently memcpy() only). They are used in the kernel and are provided to the userland via commpage entries. * Introduced build system feature allowing easy use of C structure member offsets in assembly code. Changes after merging: * Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp (caused by refactoring and introduction of "call" debugger command). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-11 03:36:44 +03:00
extern void x86_handle_debug_exception(struct iframe *frame);
extern void x86_handle_breakpoint_exception(struct iframe *frame);
Merged branch haiku/branches/developer/bonefish/optimization revision 23139 into trunk, with roughly the following changes (for details svn log the branch): * The int 99 syscall handler is now fully in assembly. * Added a sysenter/sysexit handler and use it on Pentiums that support it (via commpage). * Got rid of i386_handle_trap(). A bit of functionality was moved into the assembly handler which now uses a jump table to call C functions handling the respective interrupt. * Some optimizations to get user debugger support code out of the interrupt handling path. * Introduced a thread::flags fields which allows to skip handling of rare events (signals, user debug enabling/disabling) on the common interrupt handling path. * Got rid of the explicit iframe stack. The iframes can still be retrieved by iterating through the stack frames. * Made the commpage an architecture independent feature. It's used for the real time data stuff (instead of creating a separate area). * The x86 CPU modules can now provide processor optimized versions for common functions (currently memcpy() only). They are used in the kernel and are provided to the userland via commpage entries. * Introduced build system feature allowing easy use of C structure member offsets in assembly code. Changes after merging: * Fixed merge conflict in src/system/kernel/arch/x86/arch_debug.cpp (caused by refactoring and introduction of "call" debugger command). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23370 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-01-11 03:36:44 +03:00
extern void x86_init_user_debug();
#ifdef __cplusplus
}
#endif
// Feature macros we're supposed to define.
#define DEBUG_MAX_BREAKPOINTS X86_BREAKPOINT_COUNT
#define DEBUG_MAX_WATCHPOINTS X86_BREAKPOINT_COUNT
#define DEBUG_SOFTWARE_BREAKPOINT kX86SoftwareBreakpoint
#define DEBUG_SOFTWARE_BREAKPOINT_SIZE 1
#define DEBUG_SHARED_BREAK_AND_WATCHPOINTS 1
#endif // _KERNEL_ARCH_X86_USER_DEBUGGER_H