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/*******************************************************************************
 * DESCRIPTION   : Image load function
 ******************************************************************************/
/******************************************************************************
 * @file          loader_exceptions.S
 * - Version      : 0.02
 * @brief         
 * .
 *****************************************************************************/
/******************************************************************************
 * History : DD.MM.YYYY Version  Description
 *         : 02.08.2022 0.01     First Release
 *         : 31.10.2022 0.02     License notation change.
 *****************************************************************************/
#define SYNC_SP_EL0         (0x0U)
#define IRQ_SP_EL0          (0x1U)
#define FIQ_SP_EL0          (0x2U)
#define SERROR_SP_EL0       (0x3U)
#define SYNC_SP_ELX         (0x4U)
#define IRQ_SP_ELX          (0x5U)
#define FIQ_SP_ELX          (0x6U)
#define SERROR_SP_ELX       (0x7U)
#define SYNC_AARCH64        (0x8U)
#define IRQ_AARCH64         (0x9U)
#define FIQ_AARCH64         (0xAU)
#define SERROR_AARCH64      (0xBU)
#define SYNC_AARCH32        (0xCU)
#define IRQ_AARCH32         (0xDU)
#define FIQ_AARCH32         (0xEU)
#define SERROR_AARCH32      (0xFU)

	.global	loader_exceptions
	.global	SyncSP0
	.global	IrqSP0
	.global	FiqSP0
	.global	SErrorSP0
	.global	SyncSPx
	.global	IrqSPx
	.global	FiqSPx
	.global	SErrorSPx
	.global	SyncA64
	.global	IrqA64
	.global	FiqA64
	.global	SErrorA64
	.global	SyncA32
	.global	IrqA32
	.global	FiqA32
	.global	SErrorA32

	/* Pre macro for a vector */
	.macro bigin_vector  label, section_name=.vectors
	.cfi_sections .debug_frame
	.section \section_name, "ax"
	.align 7, 0
	.type \label, %function
	.cfi_startproc
	\label:
	.endm

	/* Post macro for a vector */
	.macro end_vector label
	.cfi_endproc
	.fill	\label + (32 * 4) - .
	.endm


/*****************************************************************************/
/* Exception Vector Table                                                    */
/*****************************************************************************/
	.section .vectors, "ax"
	.align 11, 0

loader_exceptions:

	/***********************/
	/* Current EL with SP0 */
	/***********************/
bigin_vector SyncSP0
	mov	x0, #SYNC_SP_EL0
	msr spsel, #0
	bl	handler_error
end_vector SyncSP0

bigin_vector IrqSP0
	mov	x0, #IRQ_SP_EL0
	msr spsel, #0
	bl	handler_error
end_vector IrqSP0

bigin_vector FiqSP0
	mov	x0, #FIQ_SP_EL0
	msr spsel, #0
	b	handler_fiq
end_vector FiqSP0

bigin_vector SErrorSP0
	mov	x0, #SERROR_SP_EL0
	msr spsel, #0
	bl	handler_error
end_vector SErrorSP0

	/***********************/
	/* Current EL with SPx */
	/***********************/
bigin_vector SyncSPx
	mov	x0, #SYNC_SP_ELX
	msr spsel, #0
	bl	handler_error
end_vector SyncSPx

bigin_vector IrqSPx
	mov	x0, #IRQ_SP_ELX
	msr spsel, #0
	bl	handler_error
end_vector IrqSPx

bigin_vector FiqSPx
	mov	x0, #FIQ_SP_ELX
	msr spsel, #0
	bl	handler_error
end_vector FiqSPx

bigin_vector SErrorSPx
	mov	x0, #SERROR_SP_ELX
	msr spsel, #0
	bl	handler_error
end_vector SErrorSPx

	/**************************/
	/* Lower EL using AArch64 */
	/**************************/
bigin_vector SyncA64
	mov	x0, #SYNC_AARCH64
	msr spsel, #0
	bl	handler_error
end_vector SyncA64

bigin_vector IrqA64
	mov	x0, #IRQ_AARCH64
	msr spsel, #0
	bl	handler_error
end_vector IrqA64

bigin_vector FiqA64
	mov	x0, #FIQ_AARCH64
	msr spsel, #0
	bl	handler_error
end_vector FiqA64

bigin_vector SErrorA64
	mov	x0, #SERROR_AARCH64
	msr spsel, #0
	bl	handler_error
end_vector SErrorA64

	/**************************/
	/* Lower EL using AArch32 */
	/**************************/
bigin_vector SyncA32
	mov	x0, #SYNC_AARCH32
	msr spsel, #0
	bl	handler_error
end_vector SyncA32

bigin_vector IrqA32
	mov	x0, #IRQ_AARCH32
	msr spsel, #0
	bl	handler_error
end_vector IrqA32

bigin_vector FiqA32
	mov	x0, #FIQ_AARCH32
	msr spsel, #0
	bl	handler_error
end_vector FiqA32

bigin_vector SErrorA32
	mov	x0, #SERROR_AARCH32
	msr spsel, #0
	bl	handler_error
end_vector SErrorA32