Add some more Mac68k handling stuff

[pistorm] / platforms / mac68k / mac68k-platform.c

diff --git a/platforms/mac68k/mac68k-platform.c b/platforms/mac68k/mac68k-platform.c
new file mode 100644 (file)
index 0000000..e750321
--- /dev/null
+++ b/platforms/mac68k/mac68k-platform.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: MIT
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include "platforms/platforms.h"
+#include "platforms/shared/rtc.h"
+
+//#define DEBUG_MAC_PLATFORM
+
+#ifdef DEBUG_MAC_PLATFORM
+#define DEBUG printf
+#else
+#define DEBUG(...)
+#endif
+
+#define min(a, b) (a < b) ? a : b
+#define max(a, b) (a > b) ? a : b
+
+extern void stop_cpu_emulation(uint8_t disasm_cur);
+
+uint8_t iscsi_enabled;
+
+extern int kb_hook_enabled;
+extern int mouse_hook_enabled;
+extern unsigned int ovl;
+
+void adjust_ranges_mac68k(struct emulator_config *cfg) {
+    cfg->mapped_high = 0;
+    cfg->mapped_low = 0;
+    cfg->custom_high = 0;
+    cfg->custom_low = 0;
+
+    // Set up the min/max ranges for mapped reads/writes
+    for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
+        if (cfg->map_type[i] != MAPTYPE_NONE) {
+            if ((cfg->map_offset[i] != 0 && cfg->map_offset[i] < cfg->mapped_low) || cfg->mapped_low == 0)
+                cfg->mapped_low = cfg->map_offset[i];
+            if (cfg->map_offset[i] + cfg->map_size[i] > cfg->mapped_high)
+                cfg->mapped_high = cfg->map_offset[i] + cfg->map_size[i];
+        }
+    }
+
+    printf("[MAC68K] Platform custom range: %.8X-%.8X\n", cfg->custom_low, cfg->custom_high);
+    printf("[MAC68K] Platform mapped range: %.8X-%.8X\n", cfg->mapped_low, cfg->mapped_high);
+}
+
+
+int setup_platform_mac68k(struct emulator_config *cfg) {
+    printf("Performing setup for Mac68k platform.\n");
+
+    if (strlen(cfg->platform->subsys)) {
+        printf("Sub system %sd specified, but no handler is available for this.\n", cfg->platform->subsys);
+    }
+    else
+        printf("No sub system specified.\n");
+
+    handle_ovl_mappings_mac68k(cfg);
+
+    return 0;
+}
+
+#define CHKVAR(a) (strcmp(var, a) == 0)
+
+void setvar_mac68k(struct emulator_config *cfg, char *var, char *val) {
+    if (!var)
+        return;
+
+    // FIXME: Silence unused variable warnings.
+    if (var || cfg || val) {}
+
+    if (CHKVAR("iscsi") && !iscsi_enabled) {
+        printf("[MAC68K] iSCSI Interface Enabled... well, not really.\n");
+        iscsi_enabled = 1;
+        //iscsi_init();
+        //adjust_ranges_mac68k(cfg);
+    }
+}
+
+void handle_ovl_mappings_mac68k(struct emulator_config *cfg) {
+    int32_t index = -1;
+
+    index = get_named_mapped_item(cfg, "sysrom");
+    if (index != -1) {
+        cfg->map_offset[index] = (ovl) ? 0x0 : 0x400000;
+        cfg->map_high[index] = cfg->map_size[index];
+        m68k_remove_range(cfg->map_data[index]);
+        m68k_add_rom_range((uint32_t)cfg->map_offset[index], (uint32_t)cfg->map_high[index], cfg->map_data[index]);
+        printf("[MAC68K] Added memory mapping for Mac68k System ROM.\n");
+    } else {
+        printf ("[MAC68K] No sysrom mapping found. If you intended to memory map a system ROM, make sure it has the correct ID.\n");
+    }
+    index = get_named_mapped_item(cfg, "sysram");
+    if (index != -1) {
+        cfg->map_offset[index] = (ovl) ? 0x400000 : 0x0;
+        cfg->map_high[index] = cfg->map_size[index];
+        m68k_remove_range(cfg->map_data[index]);
+        m68k_add_ram_range((uint32_t)cfg->map_offset[index], (uint32_t)cfg->map_high[index], cfg->map_data[index]);
+        printf("[MAC68K] Added memory mapping for Mac68k System RAM.\n");
+    } else {
+        printf ("[MAC68K] No sysram mapping found. If you intended to memory map a system RAM, make sure it has the correct ID.\n");
+    }
+
+    adjust_ranges_mac68k(cfg);
+}
+
+void handle_reset_mac68k(struct emulator_config *cfg) {
+    DEBUG("[MAC68K] Reset handler.\n");
+
+    if (iscsi_enabled) {
+        //iscsi_refresh_drives();
+    }
+
+    handle_ovl_mappings_mac68k(cfg);
+}
+
+void shutdown_platform_mac68k(struct emulator_config *cfg) {
+    printf("[MAC68K] Performing Mac68k platform shutdown.\n");
+    if (cfg) {}
+
+    if (cfg->platform->subsys) {
+        free(cfg->platform->subsys);
+        cfg->platform->subsys = NULL;
+    }
+    if (iscsi_enabled) {
+        //iscsi_shutdown();
+        iscsi_enabled = 0;
+    }
+
+    mouse_hook_enabled = 0;
+    kb_hook_enabled = 0;
+
+    printf("[MAC68K] Platform shutdown completed.\n");
+}
+
+void create_platform_mac68k(struct platform_config *cfg, char *subsys) {
+    cfg->register_read = NULL;
+    cfg->register_write = NULL;
+    cfg->custom_read = NULL;
+    cfg->custom_write = NULL;
+    cfg->platform_initial_setup = setup_platform_mac68k;
+    cfg->handle_reset = handle_reset_mac68k;
+    cfg->shutdown = shutdown_platform_mac68k;
+
+    cfg->setvar = setvar_mac68k;
+    cfg->id = PLATFORM_MAC;
+
+    if (subsys) {
+        cfg->subsys = malloc(strlen(subsys) + 1);
+        strcpy(cfg->subsys, subsys);
+        for (unsigned int i = 0; i < strlen(cfg->subsys); i++) {
+            cfg->subsys[i] = tolower(cfg->subsys[i]);
+        }
+    }
+}