/*
 * @author  xamidev <xamidev@riseup.net>
 * @brief   Kernel panic
 * @license GPL-3.0-only
 */

#include <stddef.h>
#include "idt/idt.h"
#include "io/serial/serial.h"
#include "kernel.h"

extern struct init_status init;

/*
 * panic - Kernel panic
 * @ctx: CPU context (optional)
 * @str: Error message 
 *
 * Ends execution of the kernel in case of an unrecoverable error.
 * Will display to terminal if it is initialized, otherwise serial only.
 * Can be called with or without a CPU context.
 */
void panic(struct cpu_status_t* ctx, const char* str)
{
	CLEAR_INTERRUPTS;
	if (ctx == NULL) {
		DEBUG("\x1b[38;5;231m\x1b[48;5;196mKernel panic!!!\x1b[0m Something went horribly wrong! (no cpu ctx)");
		fctprintf((void*)&skputc, 0, "\x1b[38;5;231m\x1b[48;5;27m");
		DIE_DEBUG(str);
		fctprintf((void*)&skputc, 0, "\x1b[0m");
		skputc('\r');
		skputc('\n');
		DEBUG("\x1b[38;5;231m\x1b[48;5;196mend Kernel panic - halting...\x1b[0m");

		if (init.terminal) {
			printf("\r\n\x1b[38;5;231m\x1b[48;5;196mKernel panic!!!\x1b[48;5;232m Something went horribly wrong! (no cpu ctx)");
			printf("\r\n%s\r\n\x1b[38;5;231mend Kernel panic - halting...\x1b[0m", str);
		}

		hcf();
	}
	DEBUG("\x1b[38;5;231m\x1b[48;5;196mKernel panic!!!\x1b[0m at rip=%p\r\nSomething went horribly wrong! (%s) vect=0x%.2x errcode=0x%x\n\rrax=%p rbx=%p rcx=%p rdx=%p\n\rrsi=%p rdi=%p  r8=%p  r9=%p\n\rr10=%p r11=%p r12=%p r13=%p\n\rr14=%p r15=%p\n\n\rflags=%p\n\rHalting...\x1b[0m",
		ctx->iret_rip,
		str,
		ctx->vector_number, ctx->error_code, ctx->rax, ctx->rbx, ctx->rcx, ctx->rdx, ctx->rsi, ctx->rdi,
		ctx->r8, ctx->r9, ctx->r10, ctx->r11, ctx->r12, ctx->r13, ctx->r14, ctx->r15, ctx->iret_flags);
	
	if (init.terminal) {
		printf("\r\n\x1b[38;5;231m\x1b[48;5;196mKernel panic!!!\x1b[48;5;232mat rip=%p\r\nSomething went horribly wrong! (%s) vect=0x%.2x errcode=0x%x\n\rrax=%p rbx=%p rcx=%p rdx=%p\n\rrsi=%p rdi=%p  r8=%p  r9=%p\n\rr10=%p r11=%p r12=%p r13=%p\n\rr14=%p r15=%p\n\n\rflags=%p\n\rHalting...\x1b[0m",
		ctx->iret_rip,
		str,
		ctx->vector_number, ctx->error_code, ctx->rax, ctx->rbx, ctx->rcx, ctx->rdx, ctx->rsi, ctx->rdi,
		ctx->r8, ctx->r9, ctx->r10, ctx->r11, ctx->r12, ctx->r13, ctx->r14, ctx->r15, ctx->iret_flags);
	}
	
	debug_stack_trace(100);
	
	hcf();
}