aba45b9b67
The symbol table needs to be passed to the panic handler very early in the kernel, loading it in init is far less useful. Return it to the boot directory and remove it from the initrd.
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
#include <uefi/boot_services.h>
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#include <uefi/types.h>
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#include "bootconfig.h"
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#include "error.h"
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#include "fs.h"
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#include "status.h"
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namespace boot {
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constexpr uint64_t jsixboot = 0x746f6f627869736a; // "jsixboot"
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static const wchar_t *
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read_string(util::buffer &data)
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{
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uint16_t size = *util::read<uint16_t>(data);
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const wchar_t *string = reinterpret_cast<const wchar_t*>(data.pointer);
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data += size;
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return string;
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}
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static void
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read_descriptor(descriptor &e, util::buffer &data)
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{
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e.flags = static_cast<desc_flags>(*util::read<uint16_t>(data));
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e.path = read_string(data);
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}
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bootconfig::bootconfig(util::buffer data, uefi::boot_services *bs)
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{
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status_line status {L"Loading boot config"};
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if (*util::read<uint64_t>(data) != jsixboot)
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error::raise(uefi::status::load_error, L"Bad header in boot config");
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const uint8_t version = *util::read<uint8_t>(data);
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if (version != 1)
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error::raise(uefi::status::incompatible_version, L"Bad version in boot config");
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uint8_t num_panics = *util::read<uint8_t>(data);
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m_flags = *util::read<uint16_t>(data);
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read_descriptor(m_kernel, data);
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read_descriptor(m_init, data);
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m_initrd = read_string(data);
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m_symbols = read_string(data);
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m_panics.count = num_panics;
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m_panics.pointer = new descriptor [num_panics];
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for (unsigned i = 0; i < num_panics; ++i)
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read_descriptor(m_panics[i], data);
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}
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} // namespace boot
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