4 #include "kernel_task.h"
5 #include "kmem_alloc.h"
6 #include "kmem_space.h"
8 #include "mem_layout.h"
10 #include "static_init.h"
13 STATIC_INITIALIZE_P(Jdb, JDB_INIT_PRIO);
15 static Per_cpu<Proc::Status> DEFINE_PER_CPU jdb_irq_state;
17 // disable interrupts before entering the kernel debugger
20 Jdb::save_disable_irqs(unsigned cpu)
22 jdb_irq_state.cpu(cpu) = Proc::cli_save();
25 // restore interrupts after leaving the kernel debugger
28 Jdb::restore_irqs(unsigned cpu)
30 Proc::sti_restore(jdb_irq_state.cpu(cpu));
35 Jdb::enter_trap_handler(unsigned /*cpu*/)
40 Jdb::leave_trap_handler(unsigned /*cpu*/)
45 Jdb::handle_conditional_breakpoint(unsigned /*cpu*/)
50 Jdb::handle_nested_trap(Jdb_entry_frame *e)
52 printf("Trap in JDB: IP:%08lx PSR=%08lx ERR=%08lx\n",
53 e->ip(), e->psr, e->error_code);
58 Jdb::handle_debug_traps(unsigned cpu)
60 Jdb_entry_frame *ef = entry_frame.cpu(cpu);
62 if (ef->error_code == 0x00e00000)
63 snprintf(error_buffer.cpu(cpu), sizeof(error_buffer.cpu(0)), "%s",
64 (char const *)ef->r[0]);
65 else if (ef->error_code == 0x00f00000)
66 snprintf(error_buffer.cpu(cpu), sizeof(error_buffer.cpu(0)),
74 Jdb::handle_user_request(unsigned cpu)
76 Jdb_entry_frame *ef = Jdb::entry_frame.cpu(cpu);
77 const char *str = (char const *)ef->r[0];
78 Space * task = get_task(cpu);
81 if (!peek(str, task, tmp) || tmp != '*')
83 if (!peek(str+1, task, tmp) || tmp != '#')
86 return execute_command_ni(task, str+2);
96 Jdb::handle_special_cmds(int)
100 FIASCO_INIT FIASCO_NOINLINE void
103 static Jdb_handler enter(at_jdb_enter);
104 static Jdb_handler leave(at_jdb_leave);
106 Jdb::jdb_enter.add(&enter);
107 Jdb::jdb_leave.add(&leave);
109 Thread::nested_trap_handler = (Trap_state::Handler)enter_jdb;
111 Kconsole::console()->register_console(push_cons());
117 Jdb::access_mem_task(Address virt, Space * task)
126 if (Mem_layout::in_kernel(virt))
128 Pte p = Kmem_space::kdir()->walk((void *)virt, 0, false,0);
132 phys = p.phys((void*)virt);
139 phys = Address(task->mem_space()->virt_to_phys(virt));
142 if (phys == (Address)-1)
143 phys = task->mem_space()->virt_to_phys_s0((void *)virt);
145 if (phys == (Address)-1)
149 unsigned long addr = Mem_layout::phys_to_pmem(phys);
150 if (addr == (Address)-1)
152 Mem_unit::flush_vdcache();
153 Pte pte = Kernel_task::kernel_task()->mem_space()->_dir->walk
154 ((void*)Mem_layout::Jdb_tmp_map_area, 0, false,0);
156 if (pte.phys() != (phys & ~(Config::SUPERPAGE_SIZE-1)))
157 pte.set(phys & ~(Config::SUPERPAGE_SIZE-1), Config::SUPERPAGE_SIZE,
158 Mem_page_attr(Page::KERN_RW | Page::CACHEABLE), true);
160 addr = Mem_layout::Jdb_tmp_map_area + (phys & (Config::SUPERPAGE_SIZE-1));
168 Jdb::translate_task(Address addr, Space * task)
170 return (Kmem::is_kmem_page_fault(addr, 0)) ? 0 : task;
175 Jdb::peek_task(Address virt, Space * task, void *value, int width)
177 void const *mem = access_mem_task(virt, task);
185 Mword dealign = (virt & 0x3) * 8;
186 *(Mword*)value = (*(Mword*)mem & (0xff << dealign)) >> dealign;
191 Mword dealign = ((virt & 0x2) >> 1) * 16;
192 *(Mword*)value = (*(Mword*)mem & (0xffff << dealign)) >> dealign;
196 memcpy(value, mem, width);
204 Jdb::is_adapter_memory(Address, Space *)
211 Jdb::poke_task(Address virt, Space * task, void const *val, int width)
213 void *mem = access_mem_task(virt, task);
217 memcpy(mem, val, width);
226 Mem_unit::clean_vdcache();
233 Mem_unit::flush_vcache();
248 Jdb::write_tsc_s(Signed64 tsc, char *buf, int maxlen, bool sign)
252 *buf++ = (tsc < 0) ? '-' : (tsc == 0) ? ' ' : '+';
255 snprintf(buf, maxlen, "%lld c", tsc);
260 Jdb::write_tsc(Signed64 tsc, char *buf, int maxlen, bool sign)
262 write_tsc_s(tsc, buf, maxlen, sign);
265 //----------------------------------------------------------------------------
266 IMPLEMENTATION [arm && mp]:
272 Jdb::send_nmi(unsigned /*cpu*/)
274 printf("NMI, what's that?\n");