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Diffstat (limited to 'c/src/lib/libcpu/powerpc/mpc5xx/vectors/vectors.h')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/mpc5xx/vectors/vectors.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/powerpc/mpc5xx/vectors/vectors.h b/c/src/lib/libcpu/powerpc/mpc5xx/vectors/vectors.h new file mode 100644 index 0000000000..ce1d3fca17 --- /dev/null +++ b/c/src/lib/libcpu/powerpc/mpc5xx/vectors/vectors.h @@ -0,0 +1,156 @@ +/* + * vectors.h Exception frame related contant and API. + * + * This include file describe the data structure and the functions implemented + * by rtems to handle exceptions. + * + * + * MPC5xx port sponsored by Defence Research and Development Canada - Suffield + * Copyright (C) 2004, Real-Time Systems Inc. (querbach@realtime.bc.ca) + * + * Derived from libbsp/powerpc/mbx8xx/vectors/vectors.h: + * + * CopyRight (C) 1999 valette@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ +#ifndef LIBCPU_POWERPC_MBX5XX_VECTORS_H +#define LIBCPU_POWERPC_MBX5XX_VECTORS_H + + +/* + * Size of hardware vector table. + */ +#define NUM_EXCEPTIONS 0x20 + +/* + * The callee (high level exception code written in C) + * will store the Link Registers (return address) at entry r1 + 4 !!!. + * So let room for it!!!. + */ +#define LINK_REGISTER_CALLEE_UPDATE_ROOM 4 +#define SRR0_FRAME_OFFSET 8 +#define SRR1_FRAME_OFFSET 12 +#define EXCEPTION_NUMBER_OFFSET 16 +#define GPR0_OFFSET 20 +#define GPR1_OFFSET 24 +#define GPR2_OFFSET 28 +#define GPR3_OFFSET 32 +#define GPR4_OFFSET 36 +#define GPR5_OFFSET 40 +#define GPR6_OFFSET 44 +#define GPR7_OFFSET 48 +#define GPR8_OFFSET 52 +#define GPR9_OFFSET 56 +#define GPR10_OFFSET 60 +#define GPR11_OFFSET 64 +#define GPR12_OFFSET 68 +#define GPR13_OFFSET 72 +#define GPR14_OFFSET 76 +#define GPR15_OFFSET 80 +#define GPR16_OFFSET 84 +#define GPR17_OFFSET 88 +#define GPR18_OFFSET 92 +#define GPR19_OFFSET 96 +#define GPR20_OFFSET 100 +#define GPR21_OFFSET 104 +#define GPR22_OFFSET 108 +#define GPR23_OFFSET 112 +#define GPR24_OFFSET 116 +#define GPR25_OFFSET 120 +#define GPR26_OFFSET 124 +#define GPR27_OFFSET 128 +#define GPR28_OFFSET 132 +#define GPR29_OFFSET 136 +#define GPR30_OFFSET 140 +#define GPR31_OFFSET 144 +#define EXC_CR_OFFSET 148 +#define EXC_CTR_OFFSET 152 +#define EXC_XER_OFFSET 156 +#define EXC_LR_OFFSET 160 +#define EXC_DAR_OFFSET 164 +/* + * maintain the EABI requested 8 bytes aligment + * As SVR4 ABI requires 16, make it 16 (as some + * exception may need more registers to be processed...) + */ +#define EXCEPTION_FRAME_END 176 + +#ifndef ASM +/* + * default raw exception handlers + */ + +extern void default_exception_vector_code_prolog(); +extern int default_exception_vector_code_prolog_size; +extern void initialize_exceptions(); + +typedef struct { + unsigned EXC_SRR0; + unsigned EXC_SRR1; + unsigned _EXC_number; + unsigned GPR0; + unsigned GPR1; + unsigned GPR2; + unsigned GPR3; + unsigned GPR4; + unsigned GPR5; + unsigned GPR6; + unsigned GPR7; + unsigned GPR8; + unsigned GPR9; + unsigned GPR10; + unsigned GPR11; + unsigned GPR12; + unsigned GPR13; + unsigned GPR14; + unsigned GPR15; + unsigned GPR16; + unsigned GPR17; + unsigned GPR18; + unsigned GPR19; + unsigned GPR20; + unsigned GPR21; + unsigned GPR22; + unsigned GPR23; + unsigned GPR24; + unsigned GPR25; + unsigned GPR26; + unsigned GPR27; + unsigned GPR28; + unsigned GPR29; + unsigned GPR30; + unsigned GPR31; + unsigned EXC_CR; + unsigned EXC_CTR; + unsigned EXC_XER; + unsigned EXC_LR; + unsigned EXC_MSR; + unsigned EXC_DAR; +}CPU_Exception_frame; + + +typedef void rtems_exception_handler_t (CPU_Exception_frame* excPtr); +/*DEBUG typedef rtems_exception_handler_t cpuExcHandlerType; */ + +/* + * Exception handler table. + * + * This table contains pointers to assembly-language exception handlers. + * The common exception prologue in vectors.S looks up an entry in this + * table and jumps to it. No return address is saved, so the handlers in + * this table must return directly to the interrupted code. + * + * On entry to an exception handler, R1 points to a new exception stack + * frame in which R3, R4, and LR have been saved. R4 holds the exception + * number. + */ +extern rtems_exception_handler_t* exception_handler_table[NUM_EXCEPTIONS]; + +#endif /* ASM */ + +#endif /* LIBCPU_POWERPC_MPC5XX_VECTORS_H */ |