diff options
Diffstat (limited to 'kernel/src/arch/aarch64/cpu/el.cpp')
| -rw-r--r-- | kernel/src/arch/aarch64/cpu/el.cpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/kernel/src/arch/aarch64/cpu/el.cpp b/kernel/src/arch/aarch64/cpu/el.cpp new file mode 100644 index 0000000..f1cc3a3 --- /dev/null +++ b/kernel/src/arch/aarch64/cpu/el.cpp @@ -0,0 +1,66 @@ +#include <arch/aarch64/cpu/el.hpp> +#include <generic/arch.hpp> +#include <klibc/stdio.hpp> +#include <generic/paging.hpp> +#include <generic/pmm.hpp> + +#define KERNEL_STACK_SIZE 32 * 1024 + +void print_regs(aarch64::el::int_frame* ctx) { + klibc::printf("Kernel panic\n\nReason: %s\n\r","cpu exception"); + klibc::printf("x0: 0x%p x1: 0x%p x2: 0x%p x3: 0x%p\nx4: 0x%p x5: 0x%p x6: 0x%p x7: 0x%p\nx8: 0x%p x9: 0x%p x10: 0x%p " + "x11: 0x%p\nx12: 0x%p x13: 0x%p x14: 0x%p x15: 0x%p\nx16: 0x%p x17: 0x%p x18: 0x%p x19: 0x%p\nx20: 0x%p " + "x21: 0x%p x22: 0x%p x23: 0x%p\nx24: 0x%p x25: 0x%p x26: 0x%p x27: 0x%p\nx28: 0x%p x29: 0x%p x30: 0x%p\r\n" + "sp: 0x%p pc: 0x%p flags: 0x%p, 1 %d",ctx->x[0],ctx->x[1],ctx->x[2],ctx->x[3],ctx->x[4],ctx->x[5],ctx->x[6],ctx->x[7],ctx->x[8],ctx->x[9],ctx->x[10],ctx->x[11],ctx->x[12], + ctx->x[13],ctx->x[14],ctx->x[15],ctx->x[16],ctx->x[17],ctx->x[18],ctx->x[19],ctx->x[20],ctx->x[21],ctx->x[22],ctx->x[23],ctx->x[24],ctx->x[25],ctx->x[26],ctx->x[27],ctx->x[28], + ctx->x[29], ctx->x[30],ctx->sp, ctx->ip, ctx->flags, 1); +} + +std::uint8_t gaster[] = { +#embed "src/gaster.txt" +}; + + +void print_ascii_art() { + klibc::printf("%s\n",gaster); +} + +[[gnu::weak]] void arch::panic(char* msg) { + print_ascii_art(); + klibc::printf("Panic with message \"%s\"\r\n",msg); +} + +extern "C" void C_fault_handler(aarch64::el::int_frame* frame) { + print_ascii_art(); + print_regs(frame); + arch::hcf(); +} + +extern "C" void C_irq_handler(aarch64::el::int_frame* frame) { + print_ascii_art(); + print_regs(frame); + arch::hcf(); +} + +extern "C" void C_userspace_fault_handler(aarch64::el::int_frame* frame) { + print_ascii_art(); + (void)frame; + print_regs(frame); + arch::hcf(); +} + +extern "C" void C_userspace_irq_handler(aarch64::el::int_frame* frame) { + print_ascii_art(); + (void)frame; + print_regs(frame); + arch::hcf(); +} + +extern "C" char int_table[]; +std::uint64_t sp_el1_kernel_stack = 0; + +void aarch64::el::init() { + sp_el1_kernel_stack = (std::uint64_t)(pmm::buddy::alloc(KERNEL_STACK_SIZE).phys + etc::hhdm()); + asm volatile("msr VBAR_EL1, %0" :: "r"(int_table)); + klibc::printf("EL: aarch64 int_table is 0x%p sp_el1 is 0x%p\r\n",int_table, sp_el1_kernel_stack); +}
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