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Diffstat (limited to 'c/src/lib/libcpu/powerpc/mpc6xx/exceptions/raw_exception.h')
| -rw-r--r-- | c/src/lib/libcpu/powerpc/mpc6xx/exceptions/raw_exception.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/powerpc/mpc6xx/exceptions/raw_exception.h b/c/src/lib/libcpu/powerpc/mpc6xx/exceptions/raw_exception.h new file mode 100644 index 0000000000..f6542b9dfe --- /dev/null +++ b/c/src/lib/libcpu/powerpc/mpc6xx/exceptions/raw_exception.h @@ -0,0 +1,168 @@ +/* + * raw_execption.h + * + * This file contains implementation of C function to + * Instanciate 60x ppc primary exception entries. + * More detailled information can be found on motorola + * site and more precisely in the following book : + * + * MPC750 + * Risc Microporcessor User's Manual + * Mtorola REF : MPC750UM/AD 8/97 + * + * Copyright (C) 1999 Eric Valette (valette@crf.canon.fr) + * Canon Centre Recherche France. + * + * The license and distribution terms for this file may be + * found in found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#ifndef _LIBCPU_MCP750_EXCEPTION_RAW_EXCEPTION_H +#define _LIBCPU_MCP750_EXCEPTION_RAW_EXCEPTION_H + +/* + * Exception Vectors as defined in the MCP750 manual + */ + +#define ASM_RESET_VECTOR 0x01 +#define ASM_MACH_VECTOR 0x02 +#define ASM_PROT_VECTOR 0x03 +#define ASM_ISI_VECTOR 0x04 +#define ASM_EXT_VECTOR 0x05 +#define ASM_ALIGN_VECTOR 0x06 +#define ASM_PROG_VECTOR 0x07 +#define ASM_FLOAT_VECTOR 0x08 +#define ASM_DEC_VECTOR 0x09 +#define ASM_SYS_VECTOR 0x0C +#define ASM_TRACE_VECTOR 0x0D +#define ASM_ADDR_VECTOR 0x13 +#define ASM_SYSMGMT_VECTOR 0x14 +#define ASM_ITM_VECTOR 0x17 +#define LAST_VALID_EXC ASM_ITM_VECTOR + +/* + * Vector offsets as defined in the MCP750 manual + */ + +#define ASM_RESET_VECTOR_OFFSET (ASM_RESET_VECTOR << 8) +#define ASM_MACH_VECTOR_OFFSET (ASM_MACH_VECTOR << 8) +#define ASM_PROT_VECTOR_OFFSET (ASM_PROT_VECTOR << 8) +#define ASM_ISI_VECTOR_OFFSET (ASM_ISI_VECTOR << 8) +#define ASM_EXT_VECTOR_OFFSET (ASM_EXT_VECTOR << 8) +#define ASM_ALIGN_VECTOR_OFFSET (ASM_ALIGN_VECTOR << 8) +#define ASM_PROG_VECTOR_OFFSET (ASM_PROG_VECTOR << 8) +#define ASM_FLOAT_VECTOR_OFFSET (ASM_FLOAT_VECTOR << 8) +#define ASM_DEC_VECTOR_OFFSET (ASM_DEC_VECTOR << 8) +#define ASM_SYS_VECTOR_OFFSET (ASM_SYS_VECTOR << 8) +#define ASM_TRACE_VECTOR_OFFSET (ASM_TRACE_VECTOR << 8) +#define ASM_ADDR_VECTOR_OFFSET (ASM_ADDR_VECTOR << 8) +#define ASM_SYSMGMT_VECTOR_OFFSET (ASM_SYSMGMT_VECTOR << 8) +#define ASM_ITM_VECTOR_OFFSET (ASM_ITM_VECTOR << 8) + + +#ifndef ASM + +/* + * Type definition for raw exceptions. + */ + +typedef unsigned char rtems_vector; +struct __rtems_raw_except_connect_data__; +typedef void (*rtems_raw_except_func) (void); +typedef unsigned char rtems_raw_except_hdl_size; + +typedef struct { + rtems_vector vector; + rtems_raw_except_func raw_hdl; + rtems_raw_except_hdl_size raw_hdl_size; +}rtems_raw_except_hdl; + +typedef void (*rtems_raw_except_enable) (const struct __rtems_raw_except_connect_data__*); +typedef void (*rtems_raw_except_disable) (const struct __rtems_raw_except_connect_data__*); +typedef int (*rtems_raw_except_is_enabled) (const struct __rtems_raw_except_connect_data__*); + +typedef struct __rtems_raw_except_connect_data__{ + /* + * Exception vector (As defined in the manual) + */ + rtems_vector exceptIndex; + /* + * Exception raw handler. See comment on handler properties below in function prototype. + */ + rtems_raw_except_hdl hdl; + /* + * function for enabling raw exceptions. In order to be consistent + * with the fact that the raw connexion can defined in the + * libcpu library, this library should have no knowledge of + * board specific hardware to manage exceptions and thus the + * "on" routine must enable the except at processor level only. + * + */ + rtems_raw_except_enable on; + /* + * function for disabling raw exceptions. In order to be consistent + * with the fact that the raw connexion can defined in the + * libcpu library, this library should have no knowledge of + * board specific hardware to manage exceptions and thus the + * "on" routine must disable the except both at device and PIC level. + * + */ + rtems_raw_except_disable off; + /* + * function enabling to know what exception may currently occur + */ + rtems_raw_except_is_enabled isOn; +}rtems_raw_except_connect_data; + +typedef struct { + /* + * size of all the table fields (*Tbl) described below. + */ + unsigned int exceptSize; + /* + * Default handler used when disconnecting exceptions. + */ + rtems_raw_except_connect_data defaultRawEntry; + /* + * Table containing initials/current value. + */ + rtems_raw_except_connect_data* rawExceptHdlTbl; +}rtems_raw_except_global_settings; + +/* + * C callable function enabling to set up one raw idt entry + */ +extern int mpc60x_set_exception (const rtems_raw_except_connect_data*); + +/* + * C callable function enabling to get one current raw idt entry + */ +extern int mpc60x_get_current_exception (rtems_raw_except_connect_data*); + +/* + * C callable function enabling to remove one current raw idt entry + */ +extern int mpc60x_delete_exception (const rtems_raw_except_connect_data*); + +/* + * C callable function enabling to check if vector is valid + */ +extern int mpc750_vector_is_valid(rtems_vector vector); + +inline static void* mpc60x_get_vector_addr(rtems_vector vector) +{ + return ((void*) (((unsigned) vector) << 8)); +} +/* + * Exception global init. + */ +extern int mpc60x_init_exceptions (rtems_raw_except_global_settings* config); +extern int mpc60x_get_exception_config (rtems_raw_except_global_settings** config); + +# endif /* ASM */ + +#endif + |