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remote.c: don't install a deprecated_xfer_memory hook.
There's no need for deprecated_xfer_memory nowadays. Memory access goes through target_xfer_partial/TARGET_OBJECT_MEMORY, etc. In fact, the remote target already handles that, and is deferring to the same helpers the deprecated_xfer_memory hook is. Basically, only a few adjustments to make these helper routines's interfaces closer to target_xfer_partial's were necessary. Tested on x86_64 Fedora 17 w/ gdbserver. gdb/ 2013-08-23 Pedro Alves <palves@redhat.com> * remote.c (remote_write_bytes_aux, remote_write_bytes) (remote_read_bytes): Change return type to LONGEST, and adjust to return a target_xfer_error on error. (remote_xfer_memory): Delete. (remote_flash_write): Change type of 'ret' local to LONGEST. (remote_xfer_partial, remote_xfer_partial): Adjust. (init_remote_ops): Don't install a deprecated_xfer_memory hook.
This commit is contained in:
Pedro Alves
parent
9aff4b7ac1
commit
00d8452480
@ -1,3 +1,13 @@
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2013-08-23 Pedro Alves <palves@redhat.com>
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* remote.c (remote_write_bytes_aux, remote_write_bytes)
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(remote_read_bytes): Change return type to LONGEST, and adjust to
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return a target_xfer_error on error.
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(remote_xfer_memory): Delete.
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(remote_flash_write): Change type of 'ret' local to LONGEST.
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(remote_xfer_partial, remote_xfer_partial): Adjust.
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(init_remote_ops): Don't install a deprecated_xfer_memory hook.
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2013-08-23 Pierre Muller <muller@sourceware.org>
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ARI fix: Push # directives to start of line.
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83
gdb/remote.c
83
gdb/remote.c
@ -6744,10 +6744,11 @@ check_binary_download (CORE_ADDR addr)
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If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
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are omitted.
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Returns the number of bytes transferred, or 0 (setting errno) for
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error. Only transfer a single packet. */
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Returns the number of bytes transferred, or a negative value (an
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'enum target_xfer_error' value) for error. Only transfer a single
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packet. */
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static int
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static LONGEST
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remote_write_bytes_aux (const char *header, CORE_ADDR memaddr,
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const gdb_byte *myaddr, ssize_t len,
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char packet_format, int use_length)
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@ -6886,14 +6887,7 @@ remote_write_bytes_aux (const char *header, CORE_ADDR memaddr,
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getpkt (&rs->buf, &rs->buf_size, 0);
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if (rs->buf[0] == 'E')
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{
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/* There is no correspondance between what the remote protocol
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uses for errors and errno codes. We would like a cleaner way
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of representing errors (big enough to include errno codes,
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bfd_error codes, and others). But for now just return EIO. */
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errno = EIO;
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return 0;
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}
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return TARGET_XFER_E_IO;
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/* Return NR_BYTES, not TODO, in case escape chars caused us to send
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fewer bytes than we'd planned. */
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@ -6906,10 +6900,11 @@ remote_write_bytes_aux (const char *header, CORE_ADDR memaddr,
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MYADDR is the address of the buffer in our space.
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LEN is the number of bytes.
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Returns number of bytes transferred, or 0 (setting errno) for
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error. Only transfer a single packet. */
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Returns number of bytes transferred, or a negative value (an 'enum
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target_xfer_error' value) for error. Only transfer a single
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packet. */
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static int
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static LONGEST
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remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
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{
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char *packet_format = 0;
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@ -6942,9 +6937,10 @@ remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len)
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MYADDR is the address of the buffer in our space.
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LEN is the number of bytes.
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Returns number of bytes transferred, or 0 for error. */
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Returns number of bytes transferred, or a negative value (an 'enum
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target_xfer_error' value) for error. */
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static int
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static LONGEST
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remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
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{
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struct remote_state *rs = get_remote_state ();
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@ -6976,15 +6972,7 @@ remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
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if (rs->buf[0] == 'E'
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&& isxdigit (rs->buf[1]) && isxdigit (rs->buf[2])
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&& rs->buf[3] == '\0')
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{
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/* There is no correspondance between what the remote protocol
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uses for errors and errno codes. We would like a cleaner way
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of representing errors (big enough to include errno codes,
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bfd_error codes, and others). But for now just return
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EIO. */
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errno = EIO;
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return 0;
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}
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return TARGET_XFER_E_IO;
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/* Reply describes memory byte by byte, each byte encoded as two hex
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characters. */
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p = rs->buf;
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@ -6994,28 +6982,6 @@ remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len)
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}
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/* Read or write LEN bytes from inferior memory at MEMADDR,
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transferring to or from debugger address BUFFER. Write to inferior
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if SHOULD_WRITE is nonzero. Returns length of data written or
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read; 0 for error. TARGET is unused. */
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static int
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remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len,
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int should_write, struct mem_attrib *attrib,
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struct target_ops *target)
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{
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int res;
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set_remote_traceframe ();
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set_general_thread (inferior_ptid);
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if (should_write)
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res = remote_write_bytes (mem_addr, buffer, mem_len);
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else
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res = remote_read_bytes (mem_addr, buffer, mem_len);
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return res;
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}
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/* Sends a packet with content determined by the printf format string
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FORMAT and the remaining arguments, then gets the reply. Returns
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@ -7090,7 +7056,7 @@ remote_flash_write (struct target_ops *ops,
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const gdb_byte *data)
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{
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int saved_remote_timeout = remote_timeout;
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int ret;
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LONGEST ret;
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struct cleanup *back_to = make_cleanup (restore_remote_timeout,
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&saved_remote_timeout);
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@ -8796,9 +8762,7 @@ remote_xfer_partial (struct target_ops *ops, enum target_object object,
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/* Handle memory using the standard memory routines. */
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if (object == TARGET_OBJECT_MEMORY)
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{
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int xfered;
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errno = 0;
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LONGEST xfered;
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/* If the remote target is connected but not running, we should
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pass this request down to a lower stratum (e.g. the executable
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@ -8811,12 +8775,7 @@ remote_xfer_partial (struct target_ops *ops, enum target_object object,
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else
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xfered = remote_read_bytes (offset, readbuf, len);
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if (xfered > 0)
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return xfered;
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else if (xfered == 0 && errno == 0)
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return 0;
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else
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return -1;
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return xfered;
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}
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/* Handle SPU memory using qxfer packets. */
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@ -8865,14 +8824,7 @@ remote_xfer_partial (struct target_ops *ops, enum target_object object,
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switch (object)
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{
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case TARGET_OBJECT_FLASH:
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xfered = remote_flash_write (ops, offset, len, writebuf);
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if (xfered > 0)
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return xfered;
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else if (xfered == 0 && errno == 0)
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return 0;
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else
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return -1;
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return remote_flash_write (ops, offset, len, writebuf);
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default:
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return -1;
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@ -11482,7 +11434,6 @@ Specify the serial device it is connected to\n\
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remote_ops.to_fetch_registers = remote_fetch_registers;
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remote_ops.to_store_registers = remote_store_registers;
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remote_ops.to_prepare_to_store = remote_prepare_to_store;
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remote_ops.deprecated_xfer_memory = remote_xfer_memory;
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remote_ops.to_files_info = remote_files_info;
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remote_ops.to_insert_breakpoint = remote_insert_breakpoint;
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remote_ops.to_remove_breakpoint = remote_remove_breakpoint;
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