diff options
| -rw-r--r-- | replay/Makefile.objs | 1 | ||||
| -rw-r--r-- | replay/replay-internal.c | 155 | ||||
| -rw-r--r-- | replay/replay-internal.h | 46 |
3 files changed, 202 insertions, 0 deletions
diff --git a/replay/Makefile.objs b/replay/Makefile.objs index d3f22c8cec..e67a932b73 100644 --- a/replay/Makefile.objs +++ b/replay/Makefile.objs @@ -1 +1,2 @@ common-obj-y += replay.o +common-obj-y += replay-internal.o diff --git a/replay/replay-internal.c b/replay/replay-internal.c new file mode 100644 index 0000000000..04efeee920 --- /dev/null +++ b/replay/replay-internal.c @@ -0,0 +1,155 @@ +/* + * replay-internal.c + * + * Copyright (c) 2010-2015 Institute for System Programming + * of the Russian Academy of Sciences. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu-common.h" +#include "replay-internal.h" +#include "qemu/error-report.h" +#include "sysemu/sysemu.h" + +unsigned int replay_data_kind = -1; +static unsigned int replay_has_unread_data; + +/* File for replay writing */ +FILE *replay_file; + +void replay_put_byte(uint8_t byte) +{ + if (replay_file) { + putc(byte, replay_file); + } +} + +void replay_put_event(uint8_t event) +{ + replay_put_byte(event); +} + + +void replay_put_word(uint16_t word) +{ + replay_put_byte(word >> 8); + replay_put_byte(word); +} + +void replay_put_dword(uint32_t dword) +{ + replay_put_word(dword >> 16); + replay_put_word(dword); +} + +void replay_put_qword(int64_t qword) +{ + replay_put_dword(qword >> 32); + replay_put_dword(qword); +} + +void replay_put_array(const uint8_t *buf, size_t size) +{ + if (replay_file) { + replay_put_dword(size); + fwrite(buf, 1, size, replay_file); + } +} + +uint8_t replay_get_byte(void) +{ + uint8_t byte = 0; + if (replay_file) { + byte = getc(replay_file); + } + return byte; +} + +uint16_t replay_get_word(void) +{ + uint16_t word = 0; + if (replay_file) { + word = replay_get_byte(); + word = (word << 8) + replay_get_byte(); + } + + return word; +} + +uint32_t replay_get_dword(void) +{ + uint32_t dword = 0; + if (replay_file) { + dword = replay_get_word(); + dword = (dword << 16) + replay_get_word(); + } + + return dword; +} + +int64_t replay_get_qword(void) +{ + int64_t qword = 0; + if (replay_file) { + qword = replay_get_dword(); + qword = (qword << 32) + replay_get_dword(); + } + + return qword; +} + +void replay_get_array(uint8_t *buf, size_t *size) +{ + if (replay_file) { + *size = replay_get_dword(); + if (fread(buf, 1, *size, replay_file) != *size) { + error_report("replay read error"); + } + } +} + +void replay_get_array_alloc(uint8_t **buf, size_t *size) +{ + if (replay_file) { + *size = replay_get_dword(); + *buf = g_malloc(*size); + if (fread(*buf, 1, *size, replay_file) != *size) { + error_report("replay read error"); + } + } +} + +void replay_check_error(void) +{ + if (replay_file) { + if (feof(replay_file)) { + error_report("replay file is over"); + qemu_system_vmstop_request_prepare(); + qemu_system_vmstop_request(RUN_STATE_PAUSED); + } else if (ferror(replay_file)) { + error_report("replay file is over or something goes wrong"); + qemu_system_vmstop_request_prepare(); + qemu_system_vmstop_request(RUN_STATE_INTERNAL_ERROR); + } + } +} + +void replay_fetch_data_kind(void) +{ + if (replay_file) { + if (!replay_has_unread_data) { + replay_data_kind = replay_get_byte(); + replay_check_error(); + replay_has_unread_data = 1; + } + } +} + +void replay_finish_event(void) +{ + replay_has_unread_data = 0; + replay_fetch_data_kind(); +} diff --git a/replay/replay-internal.h b/replay/replay-internal.h new file mode 100644 index 0000000000..17600deff9 --- /dev/null +++ b/replay/replay-internal.h @@ -0,0 +1,46 @@ +#ifndef REPLAY_INTERNAL_H +#define REPLAY_INTERNAL_H + +/* + * replay-internal.h + * + * Copyright (c) 2010-2015 Institute for System Programming + * of the Russian Academy of Sciences. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include <stdio.h> + +extern unsigned int replay_data_kind; + +/* File for replay writing */ +extern FILE *replay_file; + +void replay_put_byte(uint8_t byte); +void replay_put_event(uint8_t event); +void replay_put_word(uint16_t word); +void replay_put_dword(uint32_t dword); +void replay_put_qword(int64_t qword); +void replay_put_array(const uint8_t *buf, size_t size); + +uint8_t replay_get_byte(void); +uint16_t replay_get_word(void); +uint32_t replay_get_dword(void); +int64_t replay_get_qword(void); +void replay_get_array(uint8_t *buf, size_t *size); +void replay_get_array_alloc(uint8_t **buf, size_t *size); + +/*! Checks error status of the file. */ +void replay_check_error(void); + +/*! Finishes processing of the replayed event and fetches + the next event from the log. */ +void replay_finish_event(void); +/*! Reads data type from the file and stores it in the + replay_data_kind variable. */ +void replay_fetch_data_kind(void); + +#endif |