/*
- * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
#include <asm_macros.S>
+#include <common/debug.h>
+ .globl asm_print_str
+ .globl asm_print_hex
+ .globl asm_print_hex_bits
.globl asm_assert
.globl do_panic
.globl report_exception
/* Since the max decimal input number is 65536 */
#define MAX_DEC_DIVISOR 10000
-
/* The offset to add to get ascii for numerals '0 - 9' */
#define ASCII_OFFSET_NUM '0'
- .section .rodata.panic_str, "aS"
-panic_msg:
- .asciz "PANIC at PC : 0x"
-panic_end:
- .asciz "\r\n"
-
- /***********************************************************
- * The common implementation of do_panic for all BL stages
- ***********************************************************/
-func do_panic
- /* Have LR copy point to PC at the time of panic */
- sub r6, lr, #4
-
- /* Initialize crash console and verify success */
- bl plat_crash_console_init
- cmp r0, #0
- beq 1f
-
- /* Print panic message */
- ldr r4, =panic_msg
- bl asm_print_str
-
- /* Print LR in hex */
- mov r4, r6
- bl asm_print_hex
-
- /* Print new line */
- ldr r4, =panic_end
- bl asm_print_str
-
- bl plat_crash_console_flush
-
-1:
- mov lr, r6
- b plat_panic_handler
-endfunc do_panic
-
- /***********************************************************
- * This function is called from the vector table for
- * unhandled exceptions. It reads the current mode and
- * passes it to platform.
- ***********************************************************/
-func report_exception
- mrs r0, cpsr
- and r0, #MODE32_MASK
- bl plat_report_exception
- no_ret plat_panic_handler
-endfunc report_exception
-
#if ENABLE_ASSERTIONS
.section .rodata.assert_str, "aS"
assert_msg1:
.asciz " Line 0x"
#else
.asciz " Line "
+
+ /*
+ * This macro is intended to be used to print the
+ * line number in decimal. Used by asm_assert macro.
+ * The max number expected is 65536.
+ * In: r4 = the decimal to print.
+ * Clobber: lr, r0, r1, r2, r5, r6
+ */
+ .macro asm_print_line_dec
+ mov r6, #10 /* Divide by 10 after every loop iteration */
+ ldr r5, =MAX_DEC_DIVISOR
+dec_print_loop:
+ udiv r0, r4, r5 /* Get the quotient */
+ mls r4, r0, r5, r4 /* Find the remainder */
+ add r0, r0, #ASCII_OFFSET_NUM /* Convert to ascii */
+ bl plat_crash_console_putc
+ udiv r5, r5, r6 /* Reduce divisor */
+ cmp r5, #0
+ bne dec_print_loop
+ .endm
#endif
/* ---------------------------------------------------------------------------
mov r5, r0
mov r6, r1
- /* Initialize crash console and verify success */
+ /* Ensure the console is initialized */
bl plat_crash_console_init
+
+ /* Check if the console is initialized */
cmp r0, #0
- beq 1f
+ beq _assert_loop
- /* Print file name */
+ /* The console is initialized */
ldr r4, =assert_msg1
bl asm_print_str
mov r4, r5
bl asm_print_str
-
- /* Print line number string */
ldr r4, =assert_msg2
bl asm_print_str
- /* Test for maximum supported line number */
+ /* Check if line number higher than max permitted */
ldr r4, =~0xffff
tst r6, r4
- bne 1f
+ bne _assert_loop
mov r4, r6
#if ARM_ARCH_MAJOR == 7 && !defined(ARMV7_SUPPORTS_VIRTUALIZATION)
******************************************************************/
bl asm_print_hex
#else
- /* Print line number in decimal */
- mov r6, #10 /* Divide by 10 after every loop iteration */
- ldr r5, =MAX_DEC_DIVISOR
-dec_print_loop:
- udiv r0, r4, r5 /* Quotient */
- mls r4, r0, r5, r4 /* Remainder */
- add r0, r0, #ASCII_OFFSET_NUM /* Convert to ASCII */
- bl plat_crash_console_putc
- udiv r5, r5, r6 /* Reduce divisor */
- cmp r5, #0
- bne dec_print_loop
+ asm_print_line_dec
#endif
-
bl plat_crash_console_flush
-
-1:
+_assert_loop:
#endif /* LOG_LEVEL >= LOG_LEVEL_INFO */
no_ret plat_panic_handler
endfunc asm_assert
* Clobber: lr, r0 - r3, r5
*/
func asm_print_hex
- mov r3, lr
mov r5, #32 /* No of bits to convert to ascii */
+
+ /* Convert to ascii number of bits in r5 */
+asm_print_hex_bits:
+ mov r3, lr
1:
sub r5, r5, #4
lsr r0, r4, r5
bne 1b
bx r3
endfunc asm_print_hex
+
+ /***********************************************************
+ * The common implementation of do_panic for all BL stages
+ ***********************************************************/
+
+.section .rodata.panic_str, "aS"
+ panic_msg: .asciz "PANIC at PC : 0x"
+ panic_end: .asciz "\r\n"
+
+func do_panic
+ /* Have LR copy point to PC at the time of panic */
+ sub r6, lr, #4
+
+ /* Initialize crash console and verify success */
+ bl plat_crash_console_init
+
+ /* Check if the console is initialized */
+ cmp r0, #0
+ beq _panic_handler
+
+ /* The console is initialized */
+ ldr r4, =panic_msg
+ bl asm_print_str
+
+ /* Print LR in hex */
+ mov r4, r6
+ bl asm_print_hex
+
+ /* Print new line */
+ ldr r4, =panic_end
+ bl asm_print_str
+
+ bl plat_crash_console_flush
+
+_panic_handler:
+ mov lr, r6
+ b plat_panic_handler
+endfunc do_panic
+
+ /***********************************************************
+ * This function is called from the vector table for
+ * unhandled exceptions. It reads the current mode and
+ * passes it to platform.
+ ***********************************************************/
+func report_exception
+ mrs r0, cpsr
+ and r0, #MODE32_MASK
+ bl plat_report_exception
+ no_ret plat_panic_handler
+endfunc report_exception
mov x6, #10 /* Divide by 10 after every loop iteration */
mov x5, #MAX_DEC_DIVISOR
dec_print_loop:
- udiv x0, x4, x5 /* Get the quotient */
- msub x4, x0, x5, x4 /* Find the remainder */
- add x0, x0, #ASCII_OFFSET_NUM /* Convert to ascii */
+ udiv x0, x4, x5 /* Get the quotient */
+ msub x4, x0, x5, x4 /* Find the remainder */
+ add x0, x0, #ASCII_OFFSET_NUM /* Convert to ascii */
bl plat_crash_console_putc
- udiv x5, x5, x6 /* Reduce divisor */
+ udiv x5, x5, x6 /* Reduce divisor */
cbnz x5, dec_print_loop
.endm
*/
mov x5, x0
mov x6, x1
+
/* Ensure the console is initialized */
bl plat_crash_console_init
+
/* Check if the console is initialized */
cbz x0, _assert_loop
+
/* The console is initialized */
adr x4, assert_msg1
bl asm_print_str
bl asm_print_str
adr x4, assert_msg2
bl asm_print_str
+
/* Check if line number higher than max permitted */
tst x6, #~0xffff
b.ne _assert_loop
el3_panic:
mov x6, x30
bl plat_crash_console_init
+
/* Check if the console is initialized */
cbz x0, _panic_handler
+
/* The console is initialized */
adr x4, panic_msg
bl asm_print_str
mov x4, x6
+
/* The panic location is lr -4 */
sub x4, x4, #4
bl asm_print_hex
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