diff options
Diffstat (limited to 'src/common.c')
| -rw-r--r-- | src/common.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/src/common.c b/src/common.c new file mode 100644 index 0000000..0a28871 --- /dev/null +++ b/src/common.c @@ -0,0 +1,255 @@ +#include <stdio.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> +#include <rs232.h> +#include "uip.h" +#include "common.h" +#include "aexec.h" +#include "fujichat.h" + +int __fastcall__ (*atari_exec_p)(char *) = (int __fastcall__ (*)(char *))0x600; +fuji_conf_t *config = (fuji_conf_t *)CONFIG_ADDRESS; + +void disable_break(void) { + asm("lda $10"); /* POKMSK */ + asm("and #$7f"); + asm("sta $10"); /* POKMSK */ + asm("sta $D20E"); /* IRQEN */ +} + +/* easier to copy/paste this tiny function from uip.c + than it would be to rebuild all of uIP for use in + this program! Also don't want to bloat fujiconf by + linking uip.a, even if it would link without a + recompile. */ +/* +u16_t local_htons(u16_t val) { + return HTONS(val); +} +*/ + +/* this version's half the size */ +u16_t local_htons(u16_t val) { + __AX__ = val; + asm("sta tmp1"); + asm("txa"); + asm("ldx tmp1"); +} + +/* helper for fuji_cgetc */ +void __fastcall__ call_keybdv(void) { + asm("lda $E420+5"); /* KEYBDV */ + asm("pha"); + asm("lda $E420+4"); + asm("pha"); + asm("lda #12"); + asm("sta $2A"); /* ICAX1Z */ +} + +/* replacement for cgetc() that doesn't include cursor enable/disable + stuff (otherwise copied from cc65's cgetc.s) */ +char __fastcall__ fuji_cgetc(void) { + asm("jsr _call_keybdv"); + asm("ldx #0"); +} + + +#if 0 +char get_config(void) { + char config_valid = 0; + FILE *f = fopen(DEFAULT_CONF_FILE, "rb"); + + puts("Loading config from " DEFAULT_CONF_FILE); + + if(f) { + config_valid = + fread(config, 1, sizeof(fuji_conf_t), f) == sizeof(fuji_conf_t); + fclose(f); + if(!config_valid) + puts("Config file is wrong size"); + } else { + puts("No config file found"); + } + + if(config_valid) { + if(!config_is_valid()) { + puts("Invalid or outdated config file"); + config_valid = 0; + } else { + puts("Loaded OK"); + } + } + + return config_valid; +} + +#else +/* using open() read() close() instead of fopen() fread() fclose() + is a big win: save us 438 bytes! */ +char get_config(void) { + char config_valid = 0; + int f = open(DEFAULT_CONF_FILE, O_RDONLY); + + puts("Loading config from " DEFAULT_CONF_FILE); + + if(f >= 0) { + config_valid = + (read(f, config, sizeof(fuji_conf_t)) == sizeof(fuji_conf_t)); + close(f); + if(!config_valid) + puts("Config file is wrong size"); + } else { + puts("No config file found"); + } + + if(config_valid) { + if(!config_is_valid()) { + puts("Invalid or outdated config file"); + config_valid = 0; + } else { + puts("Loaded OK"); + } + } + + return config_valid; +} +#endif + +char config_is_valid(void) { + // return( (memcmp(config->signature, CONF_SIGNATURE, 2) == 0) && (config->version == CONF_VERSION) ); + return + *((char *)CONFIG_ADDRESS) == CONF_SIGNATURE_LO && + *(char *)(CONFIG_ADDRESS+1) == CONF_SIGNATURE_HI && + *(char *)(CONFIG_ADDRESS+2) == CONF_VERSION; +} + +void set_default_config(void) { + puts("Using built-in defaults"); + /* + // FIXME: why does this end up always 0.0.0.0 now? + // has something to do with macro expansion. What a mess. + uip_ipaddr(&(config->local_ip), 192,168,0,2); + uip_ipaddr(&(config->peer_ip), 192,168,0,1); + uip_ipaddr(&(config->resolver_ip), 192,168,0,1); + */ + + config->local_ip[0] = 0xa8c0; + config->local_ip[1] = 0x0200; + + config->peer_ip[0] = 0xa8c0; + config->peer_ip[1] = 0x0100; + + config->resolver_ip[0] = 0xa8c0; + config->resolver_ip[1] = 0x0100; + + strcpy(config->server, "na.newnet.net"); + strcpy(config->nick, DEFAULT_NICK); + strcpy(config->real_name, "FujiChat User"); + config->server_port = 6667; + config->ui_flags = UIFLAG_HIDEMOTD; + config->bg_color = 0xc0; /* dark green */ + config->fg_color = 0x0c; + config->baud = RS_BAUD_4800; + + *(char *)(CONFIG_ADDRESS) = CONF_SIGNATURE_LO; + *(char *)(CONFIG_ADDRESS+1) = CONF_SIGNATURE_HI; + *(char *)(CONFIG_ADDRESS+2) = CONF_VERSION; + + // config_valid = 1; +} + +static char ipbuf[20]; +/* +static char *fmt = "%d.%d.%d.%d"; +*/ +char * format_ip(uip_ipaddr_t *ip) { + + u16_t *ipaddr = (u16_t *)ip; + sprintf(ipbuf, "%d.%d.%d.%d", + local_htons(ipaddr[0]) >> 8, + local_htons(ipaddr[0]) & 0xff, + local_htons(ipaddr[1]) >> 8, + local_htons(ipaddr[1]) & 0xff); + + return ipbuf; + + /* + asm(" sta ptr1"); + asm(" stx ptr1+1"); + + asm(" lda #<_ipbuf"); + asm(" ldx #>_ipbuf"); + asm(" jsr pushax"); + + asm(" lda #<_fmt"); + asm(" ldx #>_fmt"); + asm(" jsr pushax"); + + asm(" ldy #0"); + asm(" lda (ptr1),y"); + asm(" jsr pusha0"); + + asm(" ldy #1"); + asm(" lda (ptr1),y"); + asm(" jsr pusha0"); + + asm(" ldy #2"); + asm(" lda (ptr1),y"); + asm(" jsr pusha0"); + + asm(" ldy #3"); + asm(" lda (ptr1),y"); + asm(" jsr pusha0"); + + asm(" ldy #$0c"); + asm(" jsr _sprintf"); + + asm(" lda #<_ipbuf"); + asm(" ldx #>_ipbuf"); + */ +} + +void get_line(char *buf, unsigned char len) { + asm("ldy #$00"); + asm("lda (sp),y"); + asm("sta $e2"); + + asm("ldy #$02"); + asm("jsr ldaxysp"); + asm("sta $e0"); + asm("stx $e0+1"); + + asm("@loop: lda _stdin"); + asm("ldx _stdin+1"); + asm("jsr _fgetc"); + + asm("cmp #$9B"); + asm("beq @out"); + + asm("ldy #$00"); + asm("sta ($e0),y"); + asm("inc $e0"); + asm("bne @noinc"); + asm("inc $e0+1"); + asm("@noinc:"); + + asm("dec $e2"); + asm("bne @loop"); + + asm("@out:"); + asm("ldy #$00"); + asm("tya"); + asm("sta ($e0),y"); + + /* + // C implementation is 80 bytes, asm is 50 + fgets(buf, len, stdin); + while(*buf) { + if(*buf == '\n') + *buf = '\0'; + ++buf; + } + */ +} + |