mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-26 10:43:31 +08:00
330 lines
9.3 KiB
C
Executable File
330 lines
9.3 KiB
C
Executable File
/* This file has been modified by Data General Corporation, November 1989. */
|
|
|
|
#ifndef _tdesc_h
|
|
#define _tdesc_h
|
|
#ifdef __STDC__
|
|
#define _ARGS(x) x
|
|
#else
|
|
#define _ARGS(x) ()
|
|
#endif
|
|
|
|
/*
|
|
This file provides an abstract interface to "tdesc" information.
|
|
It is designed to be used in a uniform manner by several kinds
|
|
of debuggers:
|
|
(1) code in live debugged process (e.g., a traceback routine)
|
|
(2) a separate-process debugger debugging a live process
|
|
(3) a separate-process debugger debugging a memory dump
|
|
|
|
Dcontext model notes
|
|
* captures machine context
|
|
* partial: excludes memory
|
|
* frames
|
|
* kinds
|
|
* make one for starters, chain in reverse order to previous ones
|
|
* representation: pointer to opaque
|
|
* alloc/free protocol
|
|
|
|
Overall model
|
|
* access functions
|
|
* handle
|
|
* error handling
|
|
*/
|
|
|
|
|
|
|
|
typedef int dc_boolean_t; /* range 0 .. 1 */
|
|
#define DC_FALSE 0
|
|
#define DC_TRUE 1
|
|
|
|
|
|
typedef int dc_tristate_t; /* range 0 .. 2 */
|
|
#define DC_NO 0
|
|
#define DC_YES 1
|
|
#define DC_MAYBE 2
|
|
|
|
|
|
#define DC_MII_PRECEDING_TDESC_END (1<<0)
|
|
#define DC_MII_FOLLOWING_TDESC_START (1<<1)
|
|
|
|
#define DC_MIO_ENTRY_POINT (1<< 0)
|
|
#define DC_MIO_PROLOGUE_END (1<< 1)
|
|
#define DC_MIO_EPILOGUE_START (1<< 2)
|
|
#define DC_MIO_IMPLICIT_PROLOGUE_END (1<<16)
|
|
#define DC_MIO_LITERAL_ENTRY_POINT (1<<17)
|
|
#define DC_MIO_LITERAL_EPILOGUE_START (1<<18)
|
|
|
|
|
|
/*
|
|
A word is 32 bits of information. In memory, a word is word-aligned.
|
|
|
|
A common and important use of word_t is to represent values in the
|
|
target process, including (byte) addresses in the target process.
|
|
In this case, C arithmetic can be used to simulate machine address
|
|
arithmetic on the target. (Unsigned arithmetic is actually modulus
|
|
arithmetic.)
|
|
*/
|
|
typedef unsigned int dc_word_t;
|
|
|
|
|
|
/*----------------*/
|
|
|
|
|
|
/* The exactness of locations may not be certainly known. */
|
|
typedef dc_tristate_t dc_exactness_t;
|
|
|
|
|
|
/*
|
|
The model includes five kinds of contexts. Because each context
|
|
has an associated region and frame, these describe region kinds
|
|
and frame kinds as well.
|
|
[more description needed]
|
|
Currently, only call contexts exist.
|
|
*/
|
|
|
|
typedef int dc_kind_t; /* range 0 .. 4 */
|
|
#define DC_CALL_KIND 0
|
|
#define DC_SAVE_KIND 1
|
|
#define DC_EXCEPTION_KIND 2
|
|
#define DC_PROTECTION_KIND 3
|
|
#define DC_SPECIAL_KIND 4
|
|
#define DC_NUM_KINDS 5
|
|
|
|
|
|
typedef struct dc_debug_info {
|
|
unsigned int protocol; /* 1 for this structure */
|
|
dc_word_t tdesc_ptr;
|
|
unsigned int text_words_count;
|
|
dc_word_t text_words_ptr;
|
|
unsigned int data_words_count;
|
|
dc_word_t data_words_ptr;
|
|
} dc_debug_info_t;
|
|
|
|
|
|
typedef struct dc_mstate {
|
|
dc_word_t reg[32]; /* general registers */
|
|
dc_word_t xip;
|
|
dc_word_t nip;
|
|
dc_word_t fip;
|
|
dc_word_t fpsr;
|
|
dc_word_t fpcr;
|
|
dc_word_t psr;
|
|
} dc_mstate_t;
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
void error_fcn (env, continuable, message)
|
|
dc_word_t env; /* environment (arbitrary datum) */
|
|
boolean_t continuable; /* whether error function may return */
|
|
char *message; /* string (no trailing newline) */
|
|
|
|
/* In the future, we probably want the error_fcn to be: */
|
|
void error_fcn (env, continuable, code, ...)
|
|
dc_word_t env; /* environment (arbitrary datum) */
|
|
boolean_t continuable; /* whether error function may return */
|
|
int code; /* error code */
|
|
... /* parameters to message associated
|
|
with the code */
|
|
|
|
void read_fcn (env, memory, length, buffer)
|
|
dc_word_t env; /* environment (arbitrary datum) */
|
|
dc_word_t memory; /* start address in image */
|
|
int length; /* in bytes */
|
|
char *buffer; /* start address of buffer */
|
|
/* There are no alignment assumptions for the read function. */
|
|
|
|
void write_fcn (env, memory, length, buffer)
|
|
dc_word_t env; /* environment (arbitrary datum) */
|
|
dc_word_t memory; /* start address in image */
|
|
int length; /* in bytes */
|
|
char *buffer; /* start address of buffer */
|
|
/* There are no alignment assumptions for the write function. */
|
|
/* The write function is optional. It must be provided if changes
|
|
to writable registers are to be made. */
|
|
|
|
void exec_fcn (env, mstate)
|
|
dc_word_t env; /* environment (arbitrary datum) */
|
|
dc_mstate_t *mstate; /* machine state (read-write) */
|
|
/* The execute function is optional. It would be used (in the future)
|
|
by the implementation of a procedurally specified tdesc mechanism. */
|
|
|
|
#endif
|
|
|
|
/*----------------*/
|
|
|
|
|
|
typedef struct dc_map_info_in {
|
|
dc_word_t flags;
|
|
dc_word_t preceding_tdesc_end;
|
|
dc_word_t following_tdesc_start;
|
|
} dc_map_info_in_t;
|
|
|
|
|
|
typedef struct dc_map_info_out {
|
|
dc_word_t flags;
|
|
dc_word_t entry_point;
|
|
dc_word_t prologue_end;
|
|
dc_word_t epilogue_start;
|
|
} dc_map_info_out_t;
|
|
|
|
|
|
typedef void *dc_handle_t;
|
|
|
|
typedef void (*tdesc_error_fcn_type) _ARGS((
|
|
dc_word_t env, /* environment (arbitrary datum) */
|
|
dc_boolean_t continuable, /* whether error function may return */
|
|
const char *message /* string (no trailing newline) */
|
|
));
|
|
typedef void (*tdesc_io_fcn_type) _ARGS((
|
|
dc_word_t env, /* environment (arbitrary datum) */
|
|
dc_word_t memory, /* start address in image */
|
|
int length, /* in bytes */
|
|
void *buffer /* start address of buffer */
|
|
));
|
|
typedef void (*tdesc_exec_fcn_type) _ARGS((
|
|
dc_word_t env, /* environment (arbitrary datum) */
|
|
dc_mstate_t *mstate /* machine state (read-write) */
|
|
));
|
|
typedef void (*tdesc_map_fcn_type) _ARGS((
|
|
dc_word_t map_env,
|
|
dc_word_t loc,
|
|
dc_map_info_in_t map_info_in,
|
|
dc_map_info_out_t *map_info_out
|
|
));
|
|
|
|
|
|
extern dc_handle_t dc_initiate _ARGS((
|
|
dc_word_t debug_info_ptr,
|
|
tdesc_error_fcn_type error_fcn,
|
|
dc_word_t error_env,
|
|
tdesc_io_fcn_type read_fcn,
|
|
dc_word_t read_env,
|
|
tdesc_io_fcn_type write_fcn, /* NULL => absent */
|
|
dc_word_t write_env,
|
|
tdesc_exec_fcn_type exec_fcn, /* NULL => absent */
|
|
dc_word_t exec_env,
|
|
tdesc_map_fcn_type map_fcn, /* NULL => absent */
|
|
dc_word_t map_env
|
|
));
|
|
extern void dc_terminate _ARGS((
|
|
dc_handle_t handle
|
|
));
|
|
|
|
typedef int dc_register_state_t; /* range 0 to 2 */
|
|
|
|
#define DC_INVALID 0
|
|
#define DC_READABLE 1
|
|
#define DC_WRITABLE 2
|
|
|
|
#define DC_NUM_REG 32
|
|
|
|
#define DC_AUX_LOC 0
|
|
#define DC_AUX_SXIP 1
|
|
#define DC_AUX_SNIP 2
|
|
#define DC_AUX_SFIP 3
|
|
#define DC_AUX_FPSR 4
|
|
#define DC_AUX_FPCR 5
|
|
#define DC_NUM_AUX 6
|
|
|
|
|
|
typedef void *dc_dcontext_t;
|
|
|
|
extern dc_dcontext_t dc_make_dcontext _ARGS((
|
|
dc_handle_t handle,
|
|
dc_word_t reg_info[DC_NUM_REG],
|
|
dc_word_t reg_flags[2],
|
|
dc_word_t aux_info[DC_NUM_AUX],
|
|
dc_word_t aux_flags[2],
|
|
dc_exactness_t loc_exact,
|
|
dc_word_t psr_info,
|
|
dc_boolean_t psr_ind,
|
|
dc_word_t psr_flags[2]
|
|
));
|
|
extern void dc_free_dcontext _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_register_state_t dc_location_state _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_exactness_t dc_location_exactness _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_word_t dc_location _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern void dc_set_location _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
dc_word_t value
|
|
));
|
|
extern dc_register_state_t dc_general_register_state _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
int reg
|
|
));
|
|
extern dc_word_t dc_general_register _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
int reg
|
|
));
|
|
extern void dc_set_general_register _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
int reg,
|
|
dc_word_t value
|
|
));
|
|
extern dc_register_state_t dc_auxiliary_register_state _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
int reg
|
|
));
|
|
extern dc_word_t dc_auxiliary_register _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
int reg
|
|
));
|
|
extern void dc_set_auxiliary_register _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
int reg,
|
|
dc_word_t value
|
|
));
|
|
extern dc_register_state_t dc_psr_register_bit_state _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
int bit
|
|
));
|
|
extern dc_word_t dc_psr_register _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern void dc_set_psr_register _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
dc_word_t mask,
|
|
dc_word_t value
|
|
));
|
|
extern dc_word_t dc_frame_address _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_kind_t dc_context_kind _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_register_state_t dc_return_address_state _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_exactness_t dc_return_address_exactness _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_word_t dc_return_address _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern void dc_set_return_address _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
dc_word_t value
|
|
));
|
|
extern void dc_get_exception_info();
|
|
extern void dc_get_protection_info();
|
|
extern void dc_get_special_info();
|
|
extern dc_dcontext_t dc_previous_dcontext _ARGS((
|
|
dc_dcontext_t dcontext
|
|
));
|
|
extern dc_boolean_t dc_location_in_text_chunk _ARGS((
|
|
dc_dcontext_t dcontext,
|
|
dc_word_t value
|
|
));
|
|
|
|
#endif
|