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authorHans-Peter Nilsson <hp@axis.com>2005-01-28 03:39:28 +0000
committerHans-Peter Nilsson <hp@axis.com>2005-01-28 03:39:28 +0000
commit6a7e5cfe8c15184a6e65769dd05127fe70c9e6d7 (patch)
tree00efa72dbb3156955eab4a895c988b15bc780ec5
parentf4f8cce440a38bf606aab597fd9ccb324f0fee87 (diff)
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* callback.h (struct host_callback_struct): New members pipe,
pipe_empty, pipe_nonempty, ispipe, pipe_buffer and target_sizeof_int. (CB_SYS_pipe): New macro.
-rw-r--r--include/gdb/ChangeLog5
-rw-r--r--include/gdb/callback.h33
2 files changed, 38 insertions, 0 deletions
diff --git a/include/gdb/ChangeLog b/include/gdb/ChangeLog
index d07d00d..42e1bfa 100644
--- a/include/gdb/ChangeLog
+++ b/include/gdb/ChangeLog
@@ -1,5 +1,10 @@
2005-01-28 Hans-Peter Nilsson <hp@axis.com>
+ * callback.h (struct host_callback_struct): New members pipe,
+ pipe_empty, pipe_nonempty, ispipe, pipe_buffer and
+ target_sizeof_int.
+ (CB_SYS_pipe): New macro.
+
* callback.h: Include "bfd.h".
(struct host_callback_struct): New member target_endian.
(cb_store_target_endian): Declare.
diff --git a/include/gdb/callback.h b/include/gdb/callback.h
index 08b1b6b..6c75a19 100644
--- a/include/gdb/callback.h
+++ b/include/gdb/callback.h
@@ -98,6 +98,14 @@ struct host_callback_struct
int (*lstat) PARAMS ((host_callback *, const char *, struct stat *));
int (*ftruncate) PARAMS ((host_callback *, int, long));
int (*truncate) PARAMS ((host_callback *, const char *, long));
+ int (*pipe) PARAMS ((host_callback *, int *));
+
+ /* Called by the framework when a read call has emptied a pipe buffer. */
+ void (*pipe_empty) PARAMS ((host_callback *, int read_fd, int write_fd));
+
+ /* Called by the framework when a write call makes a pipe buffer
+ non-empty. */
+ void (*pipe_nonempty) PARAMS ((host_callback *, int read_fd, int write_fd));
/* When present, call to the client to give it the oportunity to
poll any io devices for a request to quit (indicated by a nonzero
@@ -136,6 +144,22 @@ struct host_callback_struct
implement now. */
short fd_buddy[MAX_CALLBACK_FDS+1];
+ /* 0 = none, >0 = reader (index of writer),
+ <0 = writer (negative index of reader).
+ If abs (ispipe[N]) == N, then N is an end of a pipe whose other
+ end is closed. */
+ short ispipe[MAX_CALLBACK_FDS];
+
+ /* A writer stores the buffer at its index. Consecutive writes
+ realloc the buffer and add to the size. The reader indicates the
+ read part in its .size, until it has consumed it all, at which
+ point it deallocates the buffer and zeroes out both sizes. */
+ struct pipe_write_buffer
+ {
+ int size;
+ char *buffer;
+ } pipe_buffer[MAX_CALLBACK_FDS];
+
/* System call numbers. */
CB_TARGET_DEFS_MAP *syscall_map;
/* Errno values. */
@@ -155,6 +179,14 @@ struct host_callback_struct
enum bfd_endian target_endian;
+ /* Size of an "int" on the target (for syscalls whose ABI uses "int").
+ This must include padding, and only padding-at-higher-address is
+ supported. For example, a 64-bit target with 32-bit int:s which
+ are padded to 64 bits when in an array, should supposedly set this
+ to 8. The default is 4 which matches ILP32 targets and 64-bit
+ targets with 32-bit ints and no padding. */
+ int target_sizeof_int;
+
/* Marker for those wanting to do sanity checks.
This should remain the last member of this struct to help catch
miscompilation errors. */
@@ -199,6 +231,7 @@ extern host_callback default_callback;
#define CB_SYS_rename 20
#define CB_SYS_truncate 21
#define CB_SYS_ftruncate 22
+#define CB_SYS_pipe 23
/* Struct use to pass and return information necessary to perform a
system call. */