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risu.h
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risu.h
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/*******************************************************************************
* Copyright (c) 2010 Linaro Limited
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Peter Maydell (Linaro) - initial implementation
******************************************************************************/
#ifndef RISU_H
#define RISU_H
#include <inttypes.h>
#include <stdint.h>
#include <ucontext.h>
#include <stdio.h>
/* GCC computed include to pull in the correct risu_reginfo_*.h for
* the architecture.
*/
#define REGINFO_HEADER2(X) #X
#define REGINFO_HEADER1(ARCHNAME) REGINFO_HEADER2(risu_reginfo_ ## ARCHNAME.h)
#define REGINFO_HEADER(ARCH) REGINFO_HEADER1(ARCH)
#include REGINFO_HEADER(ARCH)
/* Socket related routines */
int master_connect(int port);
int apprentice_connect(const char *hostname, int port);
int send_data_pkt(int sock, void *pkt, int pktlen);
int recv_data_pkt(int sock, void *pkt, int pktlen);
void send_response_byte(int sock, int resp);
extern uintptr_t image_start_address;
extern void *memblock;
extern int test_fp_exc;
/* Ops code under test can request from risu: */
#define OP_COMPARE 0
#define OP_TESTEND 1
#define OP_SETMEMBLOCK 2
#define OP_GETMEMBLOCK 3
#define OP_COMPAREMEM 4
/* The memory block should be this long */
#define MEMBLOCKLEN 8192
/* This is the data structure we pass over the socket for OP_COMPARE
* and OP_TESTEND. It is a simplified and reduced subset of what can
* be obtained with a ucontext_t*, and is architecture specific
* (defined in risu_reginfo_*.h).
*/
struct reginfo;
typedef struct {
uintptr_t pc;
uint32_t risu_op;
} trace_header_t;
/* Functions operating on reginfo */
/* Function prototypes for read/write helper functions.
*
* We pass the helper function to send_register_info and
* recv_and_compare_register_info which can either be backed by the
* traditional network socket or a trace file.
*/
typedef int (*write_fn) (void *ptr, size_t bytes);
typedef int (*read_fn) (void *ptr, size_t bytes);
typedef void (*respond_fn) (int response);
/* Send the register information from the struct ucontext down the socket.
* Return the response code from the master.
* NB: called from a signal handler.
*/
int send_register_info(write_fn write_fn, void *uc);
/* Read register info from the socket and compare it with that from the
* ucontext. Return 0 for match, 1 for end-of-test, 2 for mismatch.
* NB: called from a signal handler.
*/
int recv_and_compare_register_info(read_fn read_fn,
respond_fn respond, void *uc);
/* Print a useful report on the status of the last comparison
* done in recv_and_compare_register_info(). This is called on
* exit, so need not restrict itself to signal-safe functions.
* Should return 0 if it was a good match (ie end of test)
* and 1 for a mismatch.
*/
int report_match_status(int trace);
/* Interface provided by CPU-specific code: */
/* Move the PC past this faulting insn by adjusting ucontext
*/
void advance_pc(void *uc);
/* Set the parameter register in a ucontext_t to the specified value.
* (32-bit targets can ignore high 32 bits.)
* vuc is a ucontext_t* cast to void*.
*/
void set_ucontext_paramreg(void *vuc, uint64_t value);
/* Return the value of the parameter register from a reginfo. */
uint64_t get_reginfo_paramreg(struct reginfo *ri);
/* Return the risu operation number we have been asked to do,
* or -1 if this was a SIGILL for a non-risuop insn.
*/
int get_risuop(struct reginfo *ri);
/* Return the PC from a reginfo */
uintptr_t get_pc(struct reginfo *ri);
/* initialize structure from a ucontext */
void reginfo_init(struct reginfo *ri, ucontext_t *uc);
/* return 1 if structs are equal, 0 otherwise. */
int reginfo_is_eq(struct reginfo *r1, struct reginfo *r2);
/* print reginfo state to a stream, returns 1 on success, 0 on failure */
int reginfo_dump(struct reginfo *ri, FILE * f);
/* reginfo_dump_mismatch: print mismatch details to a stream, ret nonzero=ok */
int reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f);
#endif /* RISU_H */