print PC of failed assertions

pk/console.c

@@ -145,5 +145,6 @@ void do_panic(const char* s, ...)
 
 void kassert_fail(const char* s)
 {
-  do_panic("assertion failed: %s\n", s);
+  register uintptr_t ra asm ("ra");
+  do_panic("assertion failed @ %p: %s\n", ra, s);
 }

pk/device.c

@@ -1,86 +0,0 @@
-#include "pk.h"
-#include "frontend.h"
-#include <string.h>
-#include <stdlib.h>
-
-void enumerate_devices()
-{
-  char buf[64] __attribute__((aligned(64)));
-
-  for (int dev = 0; dev < 256; dev++)
-  {
-    tohost_sync(dev, 0xFF, (uintptr_t)buf << 8 | 0xFF);
-    if (buf[0])
-    {
-      printk("device %d: %s\n", dev, buf);
-
-      for (int cmd = 0; cmd < 255; cmd++)
-      {
-        tohost_sync(dev, 0xFF, (uintptr_t)buf << 8 | cmd);
-        if (buf[0])
-          printk("  command %d: %s\n", cmd, buf);
-      }
-    }
-  }
-}
-
-void disk_test()
-{
-  struct disk_req {
-    uint64_t addr;
-    uint64_t offset;
-    uint64_t size;
-    uint64_t tag;
-  };
-
-  // find disk
-  const char* disk_str = "disk size=";
-  char buf[64] __attribute__((aligned(64)));
-
-  for (int dev = 0; dev < 256; dev++)
-  {
-    tohost_sync(dev, 0xFF, (uintptr_t)buf << 8 | 0xFF);
-    if (strncmp(buf, disk_str, strlen(disk_str)) == 0)
-    {
-      long size = atol(buf + strlen(disk_str));
-      printk("found disk device %d, size %ld\n", dev, size);
-
-      long sec_size = 512;
-      char buf[sec_size] __attribute__((aligned(64)));
-
-      // read block 3
-      struct disk_req req = { (uintptr_t)buf, 3*sec_size, sec_size, 0 };
-      tohost_sync(dev, 0, (uintptr_t)&req);
-      // copy block 3 to block 5
-      req.offset = 5*sec_size;
-      tohost_sync(dev, 1, (uintptr_t)&req);
-
-      printk("copied block 3 to block 5\n");
-    }
-  }
-}
-
-void rfb_test()
-{
-  char buf[64] __attribute__((aligned(64)));
-
-  int bpp = 16;
-  int width = 32;
-  int height = 32;
-  uint16_t fb[width * height] __attribute__((aligned(64)));
-
-  for (int dev = 0; dev < 256; dev++)
-  { 
-    tohost_sync(dev, 0xFF, (uintptr_t)buf << 8 | 0xFF);
-    if (strcmp(buf, "rfb") == 0)
-    {
-
-      tohost_sync(dev, 0, width | height << 16 | (uint64_t)bpp << 32);
-      tohost_sync(dev, 1, (uintptr_t)fb);
-
-      for (int pixel = 0; ; )
-        for (int i = 0, value = 0; i < width * height; i++, pixel++)
-          fb[i] = pixel;
-    }
-  }
-}