Ingo Weinhold
568ade58d0
* Generalized address checks. The debugger can now also read the commpage. * Added new syscall _kern_get_thread_cpu_state() to get the CPU state of a not running thread. Introduced arch_get_thread_debug_cpu_state() for that purpose, which is only implemented for x86 ATM (uses the new i386_get_thread_user_iframe()). * Don't allow a debugger to change a thread's "esp" anymore. That's the esp register in the kernel. "user_esp" can still be changed. * Generally set RF (resume flag) in eflags in interrupt handlers, not only after a instruction breakpoint debug exception. This should prevent breakpoints from being triggered more than once (e.g. when the breakpoint is on an instruction that can cause a page fault). I still saw those with bdb in VMware, but that might be a VMware bug. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31045 a95241bf-73f2-0310-859d-f6bbb57e9c96
119 lines
1.9 KiB
C++
119 lines
1.9 KiB
C++
/*
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* Copyright 2007, François Revol, [email protected].
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2005, Axel Dörfler, [email protected]
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* Distributed under the terms of the MIT License.
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*/
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#include <debugger.h>
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#include <int.h>
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#include <thread.h>
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#include <arch/user_debugger.h>
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#warning M68K: WRITEME
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void
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arch_clear_team_debug_info(struct arch_team_debug_info *info)
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{
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}
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void
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arch_destroy_team_debug_info(struct arch_team_debug_info *info)
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{
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arch_clear_team_debug_info(info);
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}
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void
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arch_clear_thread_debug_info(struct arch_thread_debug_info *info)
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{
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}
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void
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arch_destroy_thread_debug_info(struct arch_thread_debug_info *info)
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{
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arch_clear_thread_debug_info(info);
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}
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void
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arch_update_thread_single_step()
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{
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if (struct iframe* frame = m68k_get_user_iframe()) {
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struct thread* thread = thread_get_current_thread();
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// set/clear T1 in SR depending on if single stepping is desired
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// T1 T0
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// 0 0 no tracing
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// 0 1 trace on flow
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// 1 0 single step
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// 1 1 undef
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// note 060 and 020(?) only have T1 bit,
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// but this should be compatible as well.
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if (thread->debug_info.flags & B_THREAD_DEBUG_SINGLE_STEP) {
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frame->cpu.sr &= ~(M68K_SR_T_MASK);
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frame->cpu.sr |= (1 << M68K_SR_T1);
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} else {
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frame->cpu.sr &= ~(M68K_SR_T_MASK);
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}
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}
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}
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void
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arch_set_debug_cpu_state(const struct debug_cpu_state *cpuState)
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{
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}
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void
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arch_get_debug_cpu_state(struct debug_cpu_state *cpuState)
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{
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}
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status_t
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arch_get_thread_debug_cpu_state(struct thread *thread,
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struct debug_cpu_state *cpuState)
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{
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return B_UNSUPPORTED;
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}
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status_t
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arch_set_breakpoint(void *address)
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{
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return B_ERROR;
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}
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status_t
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arch_clear_breakpoint(void *address)
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{
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return B_ERROR;
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}
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status_t
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arch_set_watchpoint(void *address, uint32 type, int32 length)
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{
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return B_ERROR;
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}
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status_t
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arch_clear_watchpoint(void *address)
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{
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return B_ERROR;
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}
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bool
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arch_has_breakpoints(struct arch_team_debug_info *info)
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{
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return false;
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}
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