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print registers on fatal exception
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trimill
parent
361561c5f4
commit
22df3f473c
4 changed files with 119 additions and 108 deletions
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@ -4,69 +4,8 @@
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#include <serial.h>
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#include "debugger.h"
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struct dr6 {
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uint64_t b0 : 1,
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b1 : 1,
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b2 : 1,
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b3 : 1,
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: 7,
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bld : 1,
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: 1,
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bd : 1,
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bs : 1,
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bt : 1,
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rtm : 1,
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: 47;
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};
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struct dr7 {
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uint64_t l0 : 1,
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g0 : 1,
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l1 : 1,
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g1 : 1,
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l2 : 1,
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g2 : 1,
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l3 : 1,
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g3 : 1,
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: 8,
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rw0 : 2,
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len0 : 2,
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rw1 : 2,
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len1 : 2,
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rw2 : 2,
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len2 : 2,
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rw3 : 2,
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len3 : 2,
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: 32;
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};
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struct rflags {
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uint64_t cf : 1,
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: 1,
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pf : 1,
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: 1,
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af : 1,
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: 1,
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zf : 1,
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sf : 1,
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tf : 1,
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if_ : 1,
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df : 1,
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of : 1,
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iopl : 2,
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nt : 1,
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md : 1,
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rf : 1,
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vm : 1,
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ac : 1,
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vif : 1,
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vip : 1,
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id : 1,
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: 42;
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};
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#include "registers.h"
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#include "idt.h"
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struct breakpoint {
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uint64_t addr;
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@ -138,50 +77,6 @@ static void debugger_msg(int cause, struct dr6 dr6) {
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kputs("\n");
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}
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static void debugger_print_regs(struct isr_regs *state) {
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kprintf("rax: %#016lx (%lu)\n", state->rax, state->rax);
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kprintf("rbx: %#016lx (%lu)\n", state->rbx, state->rbx);
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kprintf("rcx: %#016lx (%lu)\n", state->rcx, state->rcx);
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kprintf("rdx: %#016lx (%lu)\n", state->rdx, state->rdx);
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kprintf("rsi: %#016lx (%lu)\n", state->rsi, state->rsi);
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kprintf("rdi: %#016lx (%lu)\n", state->rdi, state->rdi);
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kprintf("rsp: %#016lx (%lu)\n", state->rsp, state->rsp);
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kprintf("rbp: %#016lx (%lu)\n", state->rbp, state->rbp);
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kprintf("r8 : %#016lx (%lu)\n", state->r8 , state->r8 );
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kprintf("r9 : %#016lx (%lu)\n", state->r9 , state->r9 );
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kprintf("r10: %#016lx (%lu)\n", state->r10, state->r10);
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kprintf("r11: %#016lx (%lu)\n", state->r11, state->r11);
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kprintf("r12: %#016lx (%lu)\n", state->r12, state->r12);
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kprintf("r13: %#016lx (%lu)\n", state->r13, state->r13);
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kprintf("r14: %#016lx (%lu)\n", state->r14, state->r14);
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kprintf("r15: %#016lx (%lu)\n", state->r15, state->r15);
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kputs("---\n");
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kprintf("rip: %#016lx (%lu)\n", state->rip, state->rip);
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kputs("---\n");
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kprintf("rflags: %#016lx (%lu)\n", state->rflags, state->rflags);
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struct rflags *rflags = (struct rflags *)state->rflags;
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kputs("rflags: ");
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if (rflags->cf) kputs("CF ");
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if (rflags->pf) kputs("PF ");
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if (rflags->af) kputs("AF ");
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if (rflags->zf) kputs("ZF ");
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if (rflags->sf) kputs("SF ");
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if (rflags->tf) kputs("TF ");
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if (rflags->if_) kputs("IF ");
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if (rflags->df) kputs("DF ");
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if (rflags->of) kputs("OF ");
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if (rflags->iopl) kputs("IOPL ");
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if (rflags->nt) kputs("NT ");
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if (rflags->md) kputs("MD ");
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if (rflags->rf) kputs("RF ");
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if (rflags->vm) kputs("VM ");
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if (rflags->ac) kputs("AC ");
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if (rflags->vif) kputs("VIF ");
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if (rflags->vip) kputs("VIP ");
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if (rflags->id) kputs("ID ");
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kputs("\n");
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}
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#define PROMPT_LEN 60
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static int debugger_handle_bkp_cmd(char *msg) {
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@ -324,7 +219,7 @@ static int debugger_prompt(struct isr_regs *state) {
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dbg_continue = 1;
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return 0;
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case 'r': // print registers
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debugger_print_regs(state);
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isr_print_regs(state);
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return 1;
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case 'k': // backtrace
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log_backtrace_ex((void *)state->rip, (void *)state->rbp);
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@ -5,6 +5,7 @@
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#include "idt.h"
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#include "backtrace.h"
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#include "debugger.h"
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#include "registers.h"
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#include "../paging.h"
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#include "../bindings.h"
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#include "../drivers/pic.h"
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@ -73,6 +74,48 @@ void idt_init(void) {
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__asm__ volatile ("lidt %0" : : "m"(idtr));
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}
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void isr_print_regs(struct isr_regs *regs) {
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kprintf("rax: %#016lx (%lu)\n", regs->rax, regs->rax);
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kprintf("rbx: %#016lx (%lu)\n", regs->rbx, regs->rbx);
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kprintf("rcx: %#016lx (%lu)\n", regs->rcx, regs->rcx);
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kprintf("rdx: %#016lx (%lu)\n", regs->rdx, regs->rdx);
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kprintf("rsi: %#016lx (%lu)\n", regs->rsi, regs->rsi);
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kprintf("rdi: %#016lx (%lu)\n", regs->rdi, regs->rdi);
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kprintf("rsp: %#016lx (%lu)\n", regs->rsp, regs->rsp);
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kprintf("rbp: %#016lx (%lu)\n", regs->rbp, regs->rbp);
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kprintf("r8 : %#016lx (%lu)\n", regs->r8 , regs->r8 );
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kprintf("r9 : %#016lx (%lu)\n", regs->r9 , regs->r9 );
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kprintf("r10: %#016lx (%lu)\n", regs->r10, regs->r10);
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kprintf("r11: %#016lx (%lu)\n", regs->r11, regs->r11);
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kprintf("r12: %#016lx (%lu)\n", regs->r12, regs->r12);
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kprintf("r13: %#016lx (%lu)\n", regs->r13, regs->r13);
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kprintf("r14: %#016lx (%lu)\n", regs->r14, regs->r14);
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kprintf("r15: %#016lx (%lu)\n", regs->r15, regs->r15);
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kprintf("rip: %#016lx (%lu)\n", regs->rip, regs->rip);
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kprintf("rflags: %#016lx (%lu)\n", regs->rflags, regs->rflags);
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struct rflags *rflags = (struct rflags *)regs->rflags;
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kputs("rflags: ");
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if (rflags->cf) kputs("CF ");
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if (rflags->pf) kputs("PF ");
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if (rflags->af) kputs("AF ");
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if (rflags->zf) kputs("ZF ");
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if (rflags->sf) kputs("SF ");
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if (rflags->tf) kputs("TF ");
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if (rflags->if_) kputs("IF ");
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if (rflags->df) kputs("DF ");
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if (rflags->of) kputs("OF ");
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if (rflags->iopl) kputs("IOPL ");
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if (rflags->nt) kputs("NT ");
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if (rflags->md) kputs("MD ");
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if (rflags->rf) kputs("RF ");
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if (rflags->vm) kputs("VM ");
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if (rflags->ac) kputs("AC ");
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if (rflags->vif) kputs("VIF ");
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if (rflags->vip) kputs("VIP ");
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if (rflags->id) kputs("ID ");
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kputs("\n");
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}
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#define EX_DEBUG 0x01
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#define EX_BREAKPOINT 0x03
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#define EX_PAGE_FAULT 0x0e
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@ -138,6 +181,10 @@ void idt_exception_handler(uint64_t exception, uint64_t code, struct isr_regs *s
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kprintf("Page fault address: %#016lx\n", cr2);
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}
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kputs("\n");
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isr_print_regs(state);
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kputs("\n");
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log_backtrace_ex((void *)state->rip, (void *)state->rbp);
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@ -27,3 +27,5 @@ struct isr_regs {
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};
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void idt_init(void);
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void isr_print_regs(struct isr_regs *regs);
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67
src/arch/amd64/cpu/registers.h
Normal file
67
src/arch/amd64/cpu/registers.h
Normal file
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@ -0,0 +1,67 @@
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#pragma once
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#include <stdint.h>
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struct dr6 {
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uint64_t b0 : 1,
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b1 : 1,
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b2 : 1,
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b3 : 1,
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: 7,
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bld : 1,
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: 1,
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bd : 1,
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bs : 1,
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bt : 1,
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rtm : 1,
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: 47;
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};
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struct dr7 {
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uint64_t l0 : 1,
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g0 : 1,
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l1 : 1,
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g1 : 1,
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l2 : 1,
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g2 : 1,
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l3 : 1,
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g3 : 1,
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: 8,
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rw0 : 2,
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len0 : 2,
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rw1 : 2,
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len1 : 2,
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rw2 : 2,
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len2 : 2,
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rw3 : 2,
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len3 : 2,
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: 32;
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};
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struct rflags {
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uint64_t cf : 1,
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: 1,
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pf : 1,
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: 1,
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af : 1,
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: 1,
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zf : 1,
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sf : 1,
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tf : 1,
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if_ : 1,
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df : 1,
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of : 1,
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iopl : 2,
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nt : 1,
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md : 1,
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rf : 1,
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vm : 1,
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ac : 1,
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vif : 1,
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vip : 1,
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id : 1,
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: 42;
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};
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