Change nasmlist/ListGen to lfmt/struct lfmt

For consistency with ofmt/dfmt, change the listing structure
to "struct lfmt" and "lfmt" and move it to listing.h.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

nasm.h

@@ -126,72 +126,6 @@ typedef void (*ldfunc)(char *label, int32_t segment, int64_t offset,
 void define_label(char *label, int32_t segment, int64_t offset,
                   char *special, bool is_norm, bool isextrn);
 
-/*
- * List-file generators should look like this:
- */
-typedef struct {
-    /*
-     * Called to initialize the listing file generator. Before this
-     * is called, the other routines will silently do nothing when
-     * called. The `char *' parameter is the file name to write the
-     * listing to.
-     */
-    void (*init)(const char *fname);
-
-    /*
-     * Called to clear stuff up and close the listing file.
-     */
-    void (*cleanup)(void);
-
-    /*
-     * Called to output binary data. Parameters are: the offset;
-     * the data; the data type. Data types are similar to the
-     * output-format interface, only OUT_ADDRESS will _always_ be
-     * displayed as if it's relocatable, so ensure that any non-
-     * relocatable address has been converted to OUT_RAWDATA by
-     * then. Note that OUT_RAWDATA,0 is a valid data type, and is a
-     * dummy call used to give the listing generator an offset to
-     * work with when doing things like uplevel(LIST_TIMES) or
-     * uplevel(LIST_INCBIN).
-     */
-    void (*output)(int32_t offset, const void *data, enum out_type type, uint64_t size);
-
-    /*
-     * Called to send a text line to the listing generator. The
-     * `int' parameter is LIST_READ or LIST_MACRO depending on
-     * whether the line came directly from an input file or is the
-     * result of a multi-line macro expansion.
-     */
-    void (*line)(int type, char *line);
-
-    /*
-     * Called to change one of the various levelled mechanisms in
-     * the listing generator. LIST_INCLUDE and LIST_MACRO can be
-     * used to increase the nesting level of include files and
-     * macro expansions; LIST_TIMES and LIST_INCBIN switch on the
-     * two binary-output-suppression mechanisms for large-scale
-     * pseudo-instructions.
-     *
-     * LIST_MACRO_NOLIST is synonymous with LIST_MACRO except that
-     * it indicates the beginning of the expansion of a `nolist'
-     * macro, so anything under that level won't be expanded unless
-     * it includes another file.
-     */
-    void (*uplevel)(int type);
-
-    /*
-     * Reverse the effects of uplevel.
-     */
-    void (*downlevel)(int type);
-
-    /*
-     * Called on a warning or error, with the error message.
-     */
-    void (*error)(int severity, const char *pfx, const char *msg);
-} ListGen;
-
-extern const ListGen *nasmlist;
-
 /*
  * Token types returned by the scanner, in addition to ordinary
  * ASCII character values, and zero for end-of-string.