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48b6e87ef2
Functions ctf_fetch_registers and tfile_fetch_registers have some duplicated code about guessing the PC in regcache. Sometimes, we may change one function and forget to update the other one, like this https://www.sourceware.org/ml/gdb-patches/2014-01/msg00292.html This patch is to move the duplicated code into a new function tracefile_fetch_registers, and let both ctf_fetch_registers and tfile_fetch_registers call it. gdb: 2014-04-22 Yao Qi <yao@codesourcery.com> * tracefile-tfile.c (tfile_fetch_registers): Move the bottom to ... * tracefile.c (tracefile_fetch_registers): ... it. New function. * tracefile.h (tracefile_fetch_registers): Declare. * ctf.c (ctf_fetch_registers): Remove the bottom. Call tracefile_fetch_registers.
119 lines
4.1 KiB
C
119 lines
4.1 KiB
C
#ifndef TRACEFILE_H
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#define TRACEFILE_H 1
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#include "defs.h"
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#include "tracepoint.h"
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struct trace_file_writer;
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/* Operations to write trace frames to a specific trace format. */
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struct trace_frame_write_ops
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{
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/* Write a new trace frame. The tracepoint number of this trace
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frame is TPNUM. */
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void (*start) (struct trace_file_writer *self, uint16_t tpnum);
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/* Write an 'R' block. Buffer BUF contains its contents and SIZE is
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its size. */
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void (*write_r_block) (struct trace_file_writer *self,
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gdb_byte *buf, int32_t size);
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/* Write an 'M' block, the header and memory contents respectively.
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The header of 'M' block is composed of the start address and the
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length of memory collection, and the memory contents contain
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the collected memory contents in tracing.
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For extremely large M block, GDB is unable to get its contents
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and write them into trace file in one go, due to the limitation
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of the remote target or the size of internal buffer, we split
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the operation to 'M' block to two operations. */
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/* Write the head of 'M' block. ADDR is the start address of
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collected memory and LENGTH is the length of memory contents. */
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void (*write_m_block_header) (struct trace_file_writer *self,
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uint64_t addr, uint16_t length);
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/* Write the memory contents of 'M' block. Buffer BUF contains
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its contents and LENGTH is its length. This method can be called
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multiple times to write large memory contents of a single 'M'
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block. */
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void (*write_m_block_memory) (struct trace_file_writer *self,
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gdb_byte *buf, uint16_t length);
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/* Write a 'V' block. NUM is the trace variable number and VAL is
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the value of the trace variable. */
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void (*write_v_block) (struct trace_file_writer *self, int32_t num,
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uint64_t val);
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/* The end of the trace frame. */
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void (*end) (struct trace_file_writer *self);
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};
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/* Operations to write trace buffers to a specific trace format. */
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struct trace_file_write_ops
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{
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/* Destructor. Releases everything from SELF (but not SELF
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itself). */
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void (*dtor) (struct trace_file_writer *self);
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/* Save the data to file or directory NAME of desired format in
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target side. Return true for success, otherwise return
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false. */
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int (*target_save) (struct trace_file_writer *self,
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const char *name);
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/* Write the trace buffers to file or directory NAME. */
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void (*start) (struct trace_file_writer *self,
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const char *name);
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/* Write the trace header. */
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void (*write_header) (struct trace_file_writer *self);
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/* Write the type of block about registers. SIZE is the size of
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all registers on the target. */
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void (*write_regblock_type) (struct trace_file_writer *self,
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int size);
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/* Write trace status TS. */
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void (*write_status) (struct trace_file_writer *self,
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struct trace_status *ts);
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/* Write the uploaded TSV. */
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void (*write_uploaded_tsv) (struct trace_file_writer *self,
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struct uploaded_tsv *tsv);
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/* Write the uploaded tracepoint TP. */
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void (*write_uploaded_tp) (struct trace_file_writer *self,
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struct uploaded_tp *tp);
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/* Write to mark the end of the definition part. */
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void (*write_definition_end) (struct trace_file_writer *self);
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/* Write the data of trace buffer without parsing. The content is
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in BUF and length is LEN. */
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void (*write_trace_buffer) (struct trace_file_writer *self,
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gdb_byte *buf, LONGEST len);
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/* Operations to write trace frames. The user of this field is
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responsible to parse the data of trace buffer. Either field
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'write_trace_buffer' or field ' frame_ops' is NULL. */
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const struct trace_frame_write_ops *frame_ops;
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/* The end of writing trace buffers. */
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void (*end) (struct trace_file_writer *self);
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};
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/* Trace file writer for a given format. */
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struct trace_file_writer
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{
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const struct trace_file_write_ops *ops;
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};
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extern struct trace_file_writer *tfile_trace_file_writer_new (void);
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extern void init_tracefile_ops (struct target_ops *ops);
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extern void tracefile_fetch_registers (struct regcache *regcache, int regno);
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#endif /* TRACEFILE_H */
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