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New calling conventions for read

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1548 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2002-11-20 14:21:10 +00:00
parent e688abde1f
commit 9c7d2191aa
2 changed files with 68 additions and 52 deletions
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24
include/modload.h
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@@ -50,20 +50,24 @@
* code of mod_load before accessing any of these additional struct members.
*/
struct mod_ctrl {
/* Parameters passed into the loader routine. The second pointer
* (callerdata) is an opaque pointer that may be used by the caller to
/* Parameters passed into the loader routine. The member callerdata
* is an opaque 16 bit datatype that may be used by the caller to
* pass data through to the read routine. The read routine is used by the
* loader to load any required data. There are several calls where the
* read routine is called with a size of 1, so you may choose to make this
* a special case when implementing read().
* read routine is passed a count of 1, so you may choose to make this
* a special case when implementing read(). The read() should return the
* number of bytes actually read. If the return value differs from the
* passed count, this is considered an error.
* NOTE: read() is designed so that the POSIX read() routine can be used
* for this vector, if you're loading from disk.
*/
unsigned char (*read) (struct mod_ctrl*, void* buffer, unsigned size);
void* callerdata;
int (*read) (int callerdata, void* buffer, unsigned count);
int callerdata;
/* Parameters set by the loader routine */
void* module; /* Pointer to module data */
unsigned module_size; /* Total size of loaded module */
unsigned module_id; /* Module id */
void* module; /* Pointer to module data */
unsigned module_size; /* Total size of loaded module */
unsigned module_id; /* Module id */
};
@@ -77,7 +81,7 @@ unsigned char mod_load (struct mod_ctrl* ctrl);
void mod_free (void* module);
/* Free a loaded module. Note: The given pointer is the pointer to the
* module memory, not a pointer to a control structure.
* module memory, not a pointer to a control structure.
*/