78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
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/* Copyright (C) 2017 Adam Green (https://github.com/adamgreen)
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/* Private header file shared with unit tests. */
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#ifndef _CRASH_CATCHER_PRIV_H_
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#define _CRASH_CATCHER_PRIV_H_
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/* Definitions used by assembly language and C code. */
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#define CRASH_CATCHER_STACK_WORD_COUNT 125
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/* Definitions only required from C code. */
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#if !__ASSEMBLER__
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#include <stdint.h>
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#include "CrashCatcherApi.h"
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/* Bit in LR to indicate whether PSP was used for automatic stacking of registers during exception entry. */
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#define LR_PSP (1 << 2)
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/* Bit in LR set to 0 when automatic stacking of floating point registers occurs during exception handling. */
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#define LR_FLOAT (1 << 4)
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/* Bit in auto stacked xPSR which indicates whether stack was force 8-byte aligned. */
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#define PSR_STACK_ALIGN (1 << 9)
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/* This structure contains the integer registers that are automatically stacked by Cortex-M processor when it enters
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an exception handler. */
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typedef struct
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{
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uint32_t r0;
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uint32_t r1;
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uint32_t r2;
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uint32_t r3;
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uint32_t r12;
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uint32_t lr;
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uint32_t pc;
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uint32_t psr;
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/* The following floating point registers are only stacked when the LR_FLOAT bit is set in exceptionLR. */
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uint32_t floats[16];
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uint32_t fpscr;
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uint32_t reserved; /* keeps 8-byte alignment */
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} CrashCatcherStackedRegisters;
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/* This is the area of memory that would normally be used for the stack when running on an actual Cortex-M
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processor. Unit tests can write to this buffer to simulate stack overflow. */
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extern uint32_t g_crashCatcherStack[CRASH_CATCHER_STACK_WORD_COUNT];
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/* Called from CrashCatcher core to copy all floating point registers to supplied buffer. The supplied buffer must be
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large enough to contain 33 32-bit values (S0-S31 & FPCSR). */
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void CrashCatcher_CopyAllFloatingPointRegisters(uint32_t* pBuffer);
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/* Called from CrashCatcher core to copy upper 16 floating point registers to supplied buffer. The supplied buffer must be
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large enough to contain 16 32-bit values (S16-S31). */
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void CrashCatcher_CopyUpperFloatingPointRegisters(uint32_t* pBuffer);
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#endif // #if !__ASSEMBLER__
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#endif /* _CRASH_CATCHER_PRIV_H_ */
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