Add more semihosting support for BDM mode on ColdFire

3 files changed, 299 insertions, 0 deletions

diff --git a/libgloss/m68k/bdm-gdb.c b/libgloss/m68k/bdm-gdb.c
new file mode 100644
index 000000000..7ad1ea1ef
--- /dev/null
+++ b/libgloss/m68k/bdm-gdb.c
@@ -0,0 +1,140 @@
+/*
+ * bdm support for GDB's remote fileio protocol
+ *
+ * Copyright (c) 2006 CodeSourcery Inc
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include "bdm-gdb.h"
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+gdb_mode_t
+convert_to_gdb_mode_t (mode_t m)
+{
+  gdb_mode_t result = 0;
+  if (m & S_IFREG)
+    result |= GDB_S_IFREG;
+  if (m & S_IFDIR)
+    result |= GDB_S_IFDIR;
+  if (m & S_IRUSR)
+    result |= GDB_S_IRUSR;
+  if (m & S_IWUSR)
+    result |= GDB_S_IWUSR;
+  if (m & S_IXUSR)
+    result |= GDB_S_IXUSR;
+  if (m & S_IRGRP)
+    result |= GDB_S_IRGRP;
+  if (m & S_IWGRP)
+    result |= GDB_S_IWGRP;
+  if (m & S_IXGRP)
+    result |= GDB_S_IXGRP;
+  if (m & S_IROTH)
+    result |= GDB_S_IROTH;
+  if (m & S_IWOTH)
+    result |= GDB_S_IWOTH;
+  if (m & S_IXOTH)
+    result |= GDB_S_IXOTH;
+  return result;
+}
+
+int32_t
+convert_to_gdb_open_flags (int f)
+{
+  int32_t result = 0;
+  if (f & O_RDONLY)
+    result |= GDB_O_RDONLY;
+  if (f & O_WRONLY)
+    result |= GDB_O_WRONLY;
+  if (f & O_RDWR)
+    result |= GDB_O_RDWR;
+  if (f & O_APPEND)
+    result |= GDB_O_APPEND;
+  if (f & O_CREAT)
+    result |= GDB_O_CREAT;
+  if (f & O_TRUNC)
+    result |= GDB_O_TRUNC;
+  if (f & O_EXCL)
+    result |= GDB_O_EXCL;
+  return result;
+}
+
+int32_t
+convert_to_gdb_lseek_flags (int f)
+{
+  if (f == SEEK_CUR)
+    return GDB_SEEK_CUR;
+  else if (f == SEEK_END)
+    return GDB_SEEK_END;
+  else
+    return GDB_SEEK_SET;
+}
+
+void
+convert_from_gdb_stat (const struct gdb_stat *gs,
+		       struct stat *s)
+{
+  s->st_dev = gs->st_dev;
+  s->st_ino = gs->st_ino;
+  s->st_mode = gs->st_mode;
+  s->st_nlink = gs->st_nlink;
+  s->st_uid = gs->st_uid;
+  s->st_gid = gs->st_gid;
+  s->st_rdev = gs->st_rdev;
+  s->st_size = gs->st_size;
+  s->st_blksize = gs->st_blksize;
+  s->st_blocks = gs->st_blocks;
+  s->st_atime = gs->st_atime;
+  s->st_mtime = gs->st_mtime;
+  s->st_ctime = gs->st_ctime;
+}
+
+void
+convert_from_gdb_timeval (const struct gdb_timeval *gt,
+			  struct timeval *t)
+{
+  t->tv_sec = gt->tv_sec;
+  t->tv_usec = gt->tv_usec;
+}
+
+int
+convert_from_gdb_errno (int32_t err)
+{
+  switch (err)
+    {
+    case 0: 		return 0;
+    case GDB_EPERM: 	return EPERM;
+    case GDB_ENOENT: 	return ENOENT;
+    case GDB_EINTR: 	return EINTR;
+    case GDB_EBADF: 	return EBADF;
+    case GDB_EACCES: 	return EACCES;
+    case GDB_EFAULT: 	return EFAULT;
+    case GDB_EBUSY: 	return EBUSY;
+    case GDB_EEXIST: 	return EEXIST;
+    case GDB_ENODEV: 	return ENODEV;
+    case GDB_ENOTDIR: 	return ENOTDIR;
+    case GDB_EISDIR: 	return EISDIR;
+    case GDB_EINVAL: 	return EINVAL;
+    case GDB_ENFILE: 	return ENFILE;
+    case GDB_EMFILE: 	return EMFILE;
+    case GDB_EFBIG: 	return EFBIG;
+    case GDB_ENOSPC: 	return ENOSPC;
+    case GDB_ESPIPE: 	return ESPIPE;
+    case GDB_EROFS: 	return EROFS;
+    case GDB_ENAMETOOLONG: 	return ENAMETOOLONG;
+    case GDB_EUNKNOWN:
+    default:
+      return EIO;
+    }
+}
+
diff --git a/libgloss/m68k/bdm-gdb.h b/libgloss/m68k/bdm-gdb.h
new file mode 100644
index 000000000..a97479c67
--- /dev/null
+++ b/libgloss/m68k/bdm-gdb.h
@@ -0,0 +1,128 @@
+/*
+ * bdm support for GDB's remote fileio protocol
+ *
+ * Copyright (c) 2006 CodeSourcery Inc
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+
+/* Protocol specific representation of datatypes, as specified in D.9.11
+ * of the GDB manual.
+ * Note that since the m68k is big-endian, we can use native
+ * representations of integer datatypes in structured datatypes. */
+
+typedef uint32_t gdb_mode_t;
+typedef uint32_t gdb_time_t;
+
+struct gdb_stat {
+  uint32_t    st_dev;     /* device */
+  uint32_t    st_ino;     /* inode */
+  gdb_mode_t  st_mode;    /* protection */
+  uint32_t    st_nlink;   /* number of hard links */
+  uint32_t    st_uid;     /* user ID of owner */
+  uint32_t    st_gid;     /* group ID of owner */
+  uint32_t    st_rdev;    /* device type (if inode device) */
+  uint64_t    st_size;    /* total size, in bytes */
+  uint64_t    st_blksize; /* blocksize for filesystem I/O */
+  uint64_t    st_blocks;  /* number of blocks allocated */
+  gdb_time_t  st_atime;   /* time of last access */
+  gdb_time_t  st_mtime;   /* time of last modification */
+  gdb_time_t  st_ctime;   /* time of last change */
+};
+
+struct gdb_timeval {
+  gdb_time_t tv_sec;  /* second */
+  uint64_t tv_usec;   /* microsecond */
+};
+
+
+/* Parameters are passed between the library and the debugging stub
+ * in a fixed-size buffer.
+ */
+
+typedef uint32_t gdb_parambuf_t[4];
+
+
+/* open flags */
+
+#define GDB_O_RDONLY   0x0
+#define GDB_O_WRONLY   0x1
+#define GDB_O_RDWR     0x2
+#define GDB_O_APPEND   0x8
+#define GDB_O_CREAT  0x200
+#define GDB_O_TRUNC  0x400
+#define GDB_O_EXCL   0x800
+
+/* mode_t values */
+
+#define GDB_S_IFREG 0100000
+#define GDB_S_IFDIR  040000
+#define GDB_S_IRUSR    0400
+#define GDB_S_IWUSR    0200
+#define GDB_S_IXUSR    0100
+#define GDB_S_IRGRP     040
+#define GDB_S_IWGRP     020
+#define GDB_S_IXGRP     010
+#define GDB_S_IROTH      04
+#define GDB_S_IWOTH      02
+#define GDB_S_IXOTH      01
+
+/* errno values */
+
+#define GDB_EPERM         1
+#define GDB_ENOENT        2
+#define GDB_EINTR         4
+#define GDB_EBADF         9
+#define GDB_EACCES       13
+#define GDB_EFAULT       14
+#define GDB_EBUSY        16
+#define GDB_EEXIST       17
+#define GDB_ENODEV       19
+#define GDB_ENOTDIR      20
+#define GDB_EISDIR       21
+#define GDB_EINVAL       22
+#define GDB_ENFILE       23
+#define GDB_EMFILE       24
+#define GDB_EFBIG        27
+#define GDB_ENOSPC       28
+#define GDB_ESPIPE       29
+#define GDB_EROFS        30
+#define GDB_ENAMETOOLONG 91
+#define GDB_EUNKNOWN     9999
+
+/* lseek flags */
+
+#define GDB_SEEK_SET 0
+#define GDB_SEEK_CUR 1
+#define GDB_SEEK_END 2
+
+
+/* conversion functions */
+
+extern gdb_mode_t convert_to_gdb_mode_t (mode_t m);
+extern int32_t convert_to_gdb_open_flags (int f);
+extern int32_t convert_to_gdb_lseek_flags (int f);
+
+extern void convert_from_gdb_stat (const struct gdb_stat *gs,
+				   struct stat *s);
+extern void convert_from_gdb_timeval (const struct gdb_timeval *gt,
+				      struct timeval *t);
+extern int convert_from_gdb_errno (int32_t err);
+
+
+
+
+
diff --git a/libgloss/m68k/bdm-gettimeofday.c b/libgloss/m68k/bdm-gettimeofday.c
new file mode 100644
index 000000000..f06020b38
--- /dev/null
+++ b/libgloss/m68k/bdm-gettimeofday.c
@@ -0,0 +1,31 @@
+#include "bdm-semihost.h"
+#include "bdm-gdb.h"
+#include <sys/time.h>
+#include <errno.h>
+
+/*
+ * gettimeofday -- get the current time
+ * input parameters:
+ *   0 : timeval ptr
+ * output parameters:
+ *   0 : result
+ *   1 : errno
+ */
+
+int gettimeofday (struct timeval *tv, struct timezone *tz)
+{
+  gdb_parambuf_t parameters;
+  struct gdb_timeval gtv;
+  if (!tv)
+    return 0;
+  if (tz)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  parameters[0] = (uint32_t) &gtv;
+  BDM_TRAP (BDM_GETTIMEOFDAY, (uint32_t)parameters);
+  convert_from_gdb_timeval (&gtv, tv);
+  errno = convert_from_gdb_errno (parameters[1]);
+  return parameters[0];
+}