exception.c File Reference

#include <types.h>
#include <arch/barrier.h>
#include <arch/exception.h>
#include <arch/transition.h>
#include <console/console.h>
#include <console/uart.h>
#include <arch/lib_helpers.h>

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Functions
static void	dump_stack (uintptr_t addr, size_t bytes)
static void	print_regs (struct exc_state *exc_state)
int	exception_handler_register (uint64_t vid, struct exception_handler *h)
int	exception_handler_unregister (uint64_t vid, struct exception_handler *h)
static void	print_exception_info (struct exc_state *state, uint64_t idx)
static void	print_exception_and_die (struct exc_state *state, uint64_t idx)
static int	handle_exception (struct exc_state *state, uint64_t idx)
void	exc_dispatch (struct exc_state *state, uint64_t idx)
static int	test_exception_handler (struct exc_state *state, uint64_t vector_id)
static uint64_t	test_exception (void)
void	exception_init (void)

Variables
uint8_t	exception_stack [2 *KiB]
static const char *	exception_names [NUM_EXC_VIDS]
static struct exception_handler *	handlers [NUM_EXC_VIDS]

Function Documentation

dump_stack()

static void dump_stack ( uintptr_t  addr, size_t  bytes  )

static

Definition at line 32 of file exception.c.

References addr, ALIGN_DOWN, BIOS_DEBUG, and printk.

Referenced by print_exception_info().

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exc_dispatch()

void exc_dispatch	(	struct exc_state *	state,
		uint64_t	idx
	)

Definition at line 141 of file exception.c.

References BIOS_DEBUG, exc_exit(), EXC_RET_ABORT, EXC_RET_HANDLED_DUMP_STATE, EXC_RET_IGNORED, handle_exception(), NUM_EXC_VIDS, print_exception_and_die(), print_exception_info(), and printk.

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exception_handler_register()

int exception_handler_register	(	uint64_t	vid,
		struct exception_handler *	h
	)

Definition at line 68 of file exception.c.

References handlers, exception_handler::next, NUM_EXC_VIDS, store_release, and vid.

Referenced by probe_mb(), and test_exception().

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exception_handler_unregister()

int exception_handler_unregister	(	uint64_t	vid,
		struct exception_handler *	h
	)

Definition at line 80 of file exception.c.

References handlers, exception_handler::next, NULL, NUM_EXC_VIDS, store_release, and vid.

Referenced by probe_mb(), and test_exception().

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exception_init()

void exception_init

(

void

)

Definition at line 189 of file exception.c.

References ARRAY_SIZE, BIOS_DEBUG, CONFIG, exception_init_asm(), exception_stack, printk, and test_exception().

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handle_exception()

static int handle_exception ( struct exc_state *  state, uint64_t  idx  )

static

Definition at line 123 of file exception.c.

References EXC_RET_ABORT, exception_handler::handler, handlers, exception_handler::next, and NULL.

Referenced by exc_dispatch().

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print_exception_and_die()

static void print_exception_and_die ( struct exc_state *  state, uint64_t  idx  )

static

Definition at line 117 of file exception.c.

References die(), and print_exception_info().

Referenced by exc_dispatch().

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print_exception_info()

static void print_exception_info ( struct exc_state *  state, uint64_t  idx  )

static

Definition at line 102 of file exception.c.

References __uart_tx_byte(), BIOS_DEBUG, dump_stack(), exception_names, NUM_EXC_VIDS, print_regs(), and printk.

Referenced by exc_dispatch(), and print_exception_and_die().

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print_regs()

static void print_regs ( struct exc_state *  exc_state )

static

Definition at line 47 of file exception.c.

References BIOS_DEBUG, elx_state::elr, exc_state::elx, printk, exc_state::regs, regs::sp, and regs::x.

Referenced by print_exception_info().

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test_exception()

static uint64_t test_exception ( void  )

static

Definition at line 169 of file exception.c.

References EXC_VID_CUR_SP_EL0_SYNC, EXC_VID_CUR_SP_ELX_SYNC, exception_handler_register(), exception_handler_unregister(), force_read, exception_handler::handler, sync_el0, and test_exception_handler().

Referenced by exception_init().

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test_exception_handler()

static int test_exception_handler ( struct exc_state *  state, uint64_t  vector_id  )

static

Definition at line 161 of file exception.c.

References EXC_RET_HANDLED.

Referenced by test_exception().

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Variable Documentation

exception_names

const char* exception_names[NUM_EXC_VIDS]

static

Initial value:

= {
        [EXC_VID_CUR_SP_EL0_SYNC] = "_sync_sp_el0",
        [EXC_VID_CUR_SP_EL0_IRQ] = "_irq_sp_el0",
        [EXC_VID_CUR_SP_EL0_FIRQ] = "_fiq_sp_el0",
        [EXC_VID_CUR_SP_EL0_SERR] = "_serror_sp_el0",
        [EXC_VID_CUR_SP_ELX_SYNC] = "_sync_sp_el3",
        [EXC_VID_CUR_SP_ELX_IRQ] = "_irq_sp_el3",
        [EXC_VID_CUR_SP_ELX_FIQ] = "_fiq_sp_el3",
        [EXC_VID_CUR_SP_ELX_SERR] = "_serror_sp_el3",
        [EXC_VID_LOW64_SYNC] = "_sync_elx_64",
        [EXC_VID_LOW64_IRQ] = "_irq_elx_64",
        [EXC_VID_LOW64_FIQ] = "_fiq_elx_64",
        [EXC_VID_LOW64_SERR] = "_serror_elx_64",
        [EXC_VID_LOW32_SYNC] = "_sync_elx_32",
        [EXC_VID_LOW32_IRQ] = "_irq_elx_32",
        [EXC_VID_LOW32_FIQ] = "_fiq_elx_32",
        [EXC_VID_LOW32_SERR] = "_serror_elx_32"
}

Definition at line 13 of file exception.c.

Referenced by print_exception_info().

exception_stack

uint8_t exception_stack[2 *KiB]

Definition at line 11 of file exception.c.

handlers

struct exception_handler* handlers[NUM_EXC_VIDS]

static

Definition at line 66 of file exception.c.

Referenced by exception_handler_register(), exception_handler_unregister(), and handle_exception().