14aad62e02
Add an implicit __LINE__ to the try_or_raise macro, which gets set in r11 on cpu_assert. Also made status lines smarter about when to call cpu_assert.
71 lines
1.4 KiB
C++
71 lines
1.4 KiB
C++
#include "error.h"
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#include "console.h"
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#include "kernel_args.h"
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#include "status.h"
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namespace boot {
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namespace error {
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struct error_code_desc {
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uefi::status code;
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const wchar_t *name;
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};
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struct error_code_desc error_table[] = {
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#define STATUS_ERROR(name, num) { uefi::status::name, L#name },
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#define STATUS_WARNING(name, num) { uefi::status::name, L#name },
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#include "uefi/errors.inc"
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#undef STATUS_ERROR
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#undef STATUS_WARNING
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{ uefi::status::success, nullptr }
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};
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const wchar_t *
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message(uefi::status status)
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{
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int32_t i = -1;
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while (error_table[++i].name != nullptr) {
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if (error_table[i].code == status) return error_table[i].name;
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}
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if (uefi::is_error(status))
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return L"Unknown Error";
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else
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return L"Unknown Warning";
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}
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[[ noreturn ]] static void
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cpu_assert(uefi::status s, const wchar_t *message, size_t line)
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{
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asm volatile (
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"movq $0xeeeeeeebadbadbad, %%r8;"
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"movq %0, %%r9;"
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"movq %1, %%r10;"
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"movq %2, %%r11;"
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"movq $0, %%rdx;"
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"divq %%rdx;"
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:
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: "r"((uint64_t)s), "r"(message), "r"(line)
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: "rax", "rdx", "r8", "r9", "r10");
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while (1) asm("hlt");
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}
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[[ noreturn ]] void
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raise(uefi::status status, const wchar_t *message, size_t line)
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{
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if(status_line::fail(message, status))
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while (1) asm("hlt");
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else
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cpu_assert(status, message, line);
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}
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} // namespace error
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} // namespace boot
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void debug_break()
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{
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volatile int go = 0;
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while (!go);
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}
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