diff options
Diffstat (limited to 'src/kernel/core/sys.c')
| -rw-r--r-- | src/kernel/core/sys.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/kernel/core/sys.c b/src/kernel/core/sys.c index 8be6c7f..554c95e 100644 --- a/src/kernel/core/sys.c +++ b/src/kernel/core/sys.c @@ -1,6 +1,9 @@ #include <sys.h> #include <dbglog.h> #include <thread.h> +#include <string.h> + +#include <btree.h> // Kernel panic and kernel assert failure @@ -9,6 +12,15 @@ static void panic_do(const char* type, const char *msg, const char* file, int li asm volatile("cli;"); dbg_printf("/\n| %s:\t%s\n", type, msg); dbg_printf("| File: \t%s:%i\n", file, line); + + dbg_printf("- trace\n"); + dbg_printf("| current thread: 0x%p\n", current_thread); + uint32_t *ebp; + asm volatile("mov %%ebp, %0":"=r"(ebp)); + kernel_stacktrace(ebp[0], ebp[1]); + + dbg_print_region_info(); + dbg_printf("| System halted -_-'\n"); dbg_printf("\\---------------------------------------------------------/"); BOCHS_BREAKPOINT; @@ -26,4 +38,50 @@ void panic_assert(const char* assertion, const char* file, int line) { panic_do("ASSERT FAILED", assertion, file, line); } +// ---- kernel symbol map + +btree_t *kernel_symbol_map = 0; + +void load_kernel_symbol_map(char* text, size_t len) { + kernel_symbol_map = create_btree(id_key_cmp_fun, 0); + ASSERT (kernel_symbol_map != 0); + + dbg_printf("Loading kernel symbol map...\n"); + + char* it = text; + while (it < text + len) { + char* eol = it; + while (eol < text + len && *eol != 0 && *eol != '\n') eol++; + if (eol >= text + len) break; + *eol = 0; + + if (it[16] == '0' && it[17] == 'x' && it[34] == ' ' && it[49] == ' ') { + uint32_t addr = 0; + for (unsigned i = 18; i < 34; i++) { + addr *= 16; + if (it[i] >= '0' && it[i] <= '9') addr += it[i] - '0'; + if (it[i] >= 'a' && it[i] <= 'f') addr += it[i] - 'a' + 10; + } + btree_add(kernel_symbol_map, (void*)addr, it + 50); + } + + it = eol + 1; + } +} + +void kernel_stacktrace(uint32_t ebp, uint32_t eip) { + int i = 0; + while (ebp >= K_HIGHHALF_ADDR && eip >= K_HIGHHALF_ADDR && i++ < 10) { + char* sym = 0; + if (kernel_symbol_map != 0) sym = btree_lower(kernel_symbol_map, (void*)eip); + + dbg_printf("| 0x%p EIP: 0x%p %s\n", ebp, eip, sym); + + uint32_t *d = (uint32_t*)ebp; + ebp = d[0]; + eip = d[1]; + } +} + + /* vim: set ts=4 sw=4 tw=0 noet :*/ |