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Add write counterparts to debug_read_memory/debug_read_memory_partial.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39843 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rene Gollent 2010-12-13 23:27:59 +00:00
parent b8268a2d3d
commit 6cdfe5505c
2 changed files with 70 additions and 0 deletions
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4
headers/private/debug/debug_support.h
View File

@ -33,6 +33,10 @@ ssize_t debug_read_memory(debug_context *context, const void *address,
void *buffer, size_t size);
ssize_t debug_read_string(debug_context *context, const void *_address,
char *buffer, size_t size);
ssize_t debug_write_memory_partial(debug_context *context, const void *address,
void *buffer, size_t size);
ssize_t debug_write_memory(debug_context *context, const void *address,
void *buffer, size_t size);
status_t debug_get_cpu_state(debug_context *context, thread_id thread,
debug_debugger_message *messageCode, debug_cpu_state *cpuState);

66
src/kits/debug/debug_support.cpp
View File

@ -1,5 +1,6 @@
/*
* Copyright 2005-2009, Ingo Weinhold, ingo_weinhold@gmx.de.
* Copyright 2010, Rene Gollent, rene@gollent.com.
* Distributed under the terms of the MIT License.
*/
@ -216,6 +217,71 @@ debug_read_string(debug_context *context, const void *_address, char *buffer,
return sumRead;
}
// debug_write_memory_partial
ssize_t
debug_write_memory_partial(debug_context *context, const void *address,
void *buffer, size_t size)
{
if (!context)
return B_BAD_VALUE;
if (size == 0)
return 0;
if (size > B_MAX_READ_WRITE_MEMORY_SIZE)
size = B_MAX_READ_WRITE_MEMORY_SIZE;
// prepare the message
debug_nub_write_memory message;
message.reply_port = context->reply_port;
message.address = (void*)address;
message.size = size;
// send the message
debug_nub_write_memory_reply reply;
status_t error = send_debug_message(context, B_DEBUG_MESSAGE_WRITE_MEMORY,
&message, sizeof(message), &reply, sizeof(reply));
if (error != B_OK)
return error;
if (reply.error != B_OK)
return reply.error;
return reply.size;
}
// debug_write_memory
ssize_t
debug_write_memory(debug_context *context, const void *_address, void *_buffer,
size_t size)
{
const char *address = (const char *)_address;
char *buffer = (char*)_buffer;
// check parameters
if (!context || !address || !buffer)
return B_BAD_VALUE;
if (size == 0)
return 0;
ssize_t sumWritten = 0;
while (size > 0) {
ssize_t bytesWritten = debug_write_memory_partial(context, address, buffer,
size);
if (bytesWritten < 0) {
if (sumWritten > 0)
return sumWritten;
return bytesWritten;
}
address += bytesWritten;
buffer += bytesWritten;
sumWritten += bytesWritten;
size -= bytesWritten;
}
return sumWritten;
}
// debug_get_cpu_state
status_t
debug_get_cpu_state(debug_context *context, thread_id thread,