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Generalized the sim_disk layer to support large file disk devices (simh, VHD and RAW formats) with out requiring USE_ADDR64, and enhanced the pdp11_rq device to use this capability.

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This commit is contained in:
Mark Pizzolato
2013-03-17 12:02:43 -07:00
parent 60e855807f
commit 2e5b0d54c6
10 changed files with 145 additions and 128 deletions
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18
sim_fio.h
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@@ -38,18 +38,28 @@
#define fxwrite(a,b,c,d) sim_fwrite (a, b, c, d)
int32 sim_finit (void);
#if defined (__linux) || defined (__linux__) || defined (__hpux) || \
(defined (VMS) && (defined (__ALPHA) || defined (__ia64)) && (__DECC_VER >= 60590001)) || \
(defined(__sun__) && defined(_LARGEFILE_SOURCE)) || \
defined (_WIN32) || defined (__APPLE__) || defined (__FreeBSD__)
typedef t_int64 t_offset;
#else
typedef int32 t_offset;
#endif
FILE *sim_fopen (const char *file, const char *mode);
int sim_fseek (FILE *st, t_addr offset, int whence);
int sim_fseeko (FILE *st, t_offset offset, int whence);
size_t sim_fread (void *bptr, size_t size, size_t count, FILE *fptr);
size_t sim_fwrite (void *bptr, size_t size, size_t count, FILE *fptr);
uint32 sim_fsize (FILE *fptr);
uint32 sim_fsize_name (char *fname);
t_addr sim_fsize_ex (FILE *fptr);
t_addr sim_fsize_name_ex (char *fname);
t_offset sim_fsize_ex (FILE *fptr);
t_offset sim_fsize_name_ex (char *fname);
void sim_buf_swap_data (void *bptr, size_t size, size_t count);
void sim_buf_copy_swapped (void *dptr, void *bptr, size_t size, size_t count);
extern uint32 sim_taddr_64;
extern int32 sim_end;
extern t_bool sim_taddr_64; /* t_addr is > 32b and Large File Support available */
extern t_bool sim_toffset_64; /* Large File (>2GB) file I/O support */
extern t_bool sim_end; /* TRUE = little endian, FALSE = big endian */
#endif