diff options
Diffstat (limited to 'core/cortex-m0/panic.c')
| -rw-r--r-- | core/cortex-m0/panic.c | 57 |
1 files changed, 29 insertions, 28 deletions
diff --git a/core/cortex-m0/panic.c b/core/cortex-m0/panic.c index f1ee816c60..f20908eb7c 100644 --- a/core/cortex-m0/panic.c +++ b/core/cortex-m0/panic.c @@ -1,4 +1,4 @@ -/* Copyright 2014 The Chromium OS Authors. All rights reserved. +/* Copyright 2014 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -19,9 +19,8 @@ /* Whether bus fault is ignored */ static int bus_fault_ignored; - /* Panic data goes at the end of RAM. */ -static struct panic_data * const pdata_ptr = PANIC_DATA_PTR; +static struct panic_data *const pdata_ptr = PANIC_DATA_PTR; /* Preceded by stack, rounded down to nearest 64-bit-aligned boundary */ static const uint32_t pstack_addr = ((uint32_t)pdata_ptr) & ~7; @@ -101,7 +100,7 @@ void panic_data_print(const struct panic_data *pdata) print_reg(12, sregs, CORTEX_PANIC_FRAME_REGISTER_R12); print_reg(13, lregs, in_handler ? CORTEX_PANIC_REGISTER_MSP : - CORTEX_PANIC_REGISTER_PSP); + CORTEX_PANIC_REGISTER_PSP); print_reg(14, sregs, CORTEX_PANIC_FRAME_REGISTER_LR); print_reg(15, sregs, CORTEX_PANIC_FRAME_REGISTER_PC); } @@ -126,10 +125,9 @@ void __keep report_panic(void) sp = is_frame_in_handler_stack( pdata->cm.regs[CORTEX_PANIC_REGISTER_LR]) ? pdata->cm.regs[CORTEX_PANIC_REGISTER_MSP] : - pdata->cm.regs[CORTEX_PANIC_REGISTER_PSP]; + pdata->cm.regs[CORTEX_PANIC_REGISTER_PSP]; /* If stack is valid, copy exception frame to pdata */ - if ((sp & 3) == 0 && - sp >= CONFIG_RAM_BASE && + if ((sp & 3) == 0 && sp >= CONFIG_RAM_BASE && sp <= CONFIG_RAM_BASE + CONFIG_RAM_SIZE - 8 * sizeof(uint32_t)) { const uint32_t *sregs = (const uint32_t *)sp; int i; @@ -162,38 +160,41 @@ void exception_panic(void) "mov r5, lr\n" "stmia %[pregs]!, {r1-r5}\n" "mov sp, %[pstack]\n" - "bl report_panic\n" : : - [pregs] "r" (pdata_ptr->cm.regs), - [pstack] "r" (pstack_addr) : - /* Constraints protecting these from being clobbered. - * Gcc should be using r0 & r12 for pregs and pstack. */ - "r1", "r2", "r3", "r4", "r5", "r6", - /* clang warns that we're clobbering a reserved register: - * inline asm clobber list contains reserved registers: R7 - * [-Werror,-Winline-asm]. The intent of the clobber list is - * to force pregs and pstack to be in R0 and R12, which - * still holds. - */ + "bl report_panic\n" + : + : [pregs] "r"(pdata_ptr->cm.regs), [pstack] "r"(pstack_addr) + : + /* Constraints protecting these from being clobbered. + * Gcc should be using r0 & r12 for pregs and pstack. */ + "r1", "r2", "r3", "r4", "r5", "r6", + /* clang warns that we're clobbering a reserved register: + * inline asm clobber list contains reserved registers: R7 + * [-Werror,-Winline-asm]. The intent of the clobber list is + * to force pregs and pstack to be in R0 and R12, which + * still holds. + */ #ifndef __clang__ - "r7", + "r7", #endif - "r8", "r9", "r10", "r11", "cc", "memory" - ); + "r8", "r9", "r10", "r11", "cc", "memory"); } #ifdef CONFIG_SOFTWARE_PANIC void software_panic(uint32_t reason, uint32_t info) { - __asm__("mov " STRINGIFY(SOFTWARE_PANIC_INFO_REG) ", %0\n" - "mov " STRINGIFY(SOFTWARE_PANIC_REASON_REG) ", %1\n" - "bl exception_panic\n" - : : "r"(info), "r"(reason)); + __asm__("mov " STRINGIFY( + SOFTWARE_PANIC_INFO_REG) ", %0\n" + "mov " STRINGIFY( + SOFTWARE_PANIC_REASON_REG) ", %1\n" + "bl exception_panic\n" + : + : "r"(info), "r"(reason)); __builtin_unreachable(); } void panic_set_reason(uint32_t reason, uint32_t info, uint8_t exception) { - struct panic_data * const pdata = get_panic_data_write(); + struct panic_data *const pdata = get_panic_data_write(); uint32_t *lregs; lregs = pdata->cm.regs; @@ -213,7 +214,7 @@ void panic_set_reason(uint32_t reason, uint32_t info, uint8_t exception) void panic_get_reason(uint32_t *reason, uint32_t *info, uint8_t *exception) { - struct panic_data * const pdata = panic_get_data(); + struct panic_data *const pdata = panic_get_data(); uint32_t *lregs; if (pdata && pdata->struct_version == 2) { |