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-rw-r--r--com32/elflink/ldlinux/execute.c173
1 files changed, 173 insertions, 0 deletions
diff --git a/com32/elflink/ldlinux/execute.c b/com32/elflink/ldlinux/execute.c
new file mode 100644
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+++ b/com32/elflink/ldlinux/execute.c
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+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston MA 02110-1301, USA; either version 2 of the License, or
+ * (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <dprintf.h>
+
+#include <com32.h>
+#include <sys/exec.h>
+#include <sys/io.h>
+#include <sys/module.h>
+#include "core.h"
+#include "menu.h"
+#include "fs.h"
+#include "config.h"
+#include "localboot.h"
+#include "bios.h"
+
+#include <syslinux/bootrm.h>
+#include <syslinux/movebits.h>
+#include <syslinux/config.h>
+#include <syslinux/boot.h>
+
+const struct image_types image_boot_types[] = {
+ { "localboot", IMAGE_TYPE_LOCALBOOT },
+ { "kernel", IMAGE_TYPE_KERNEL },
+ { "linux", IMAGE_TYPE_LINUX },
+ { "boot", IMAGE_TYPE_BOOT },
+ { "bss", IMAGE_TYPE_BSS },
+ { "pxe", IMAGE_TYPE_PXE },
+ { "fdimage", IMAGE_TYPE_FDIMAGE },
+ { "com32", IMAGE_TYPE_COM32 },
+ { "config", IMAGE_TYPE_CONFIG },
+ { NULL, 0 },
+};
+
+extern int create_args_and_load(char *);
+
+__export void execute(const char *cmdline, uint32_t type, bool sysappend)
+{
+ const char *kernel, *args;
+ const char *p;
+ com32sys_t ireg;
+ char *q, ch;
+
+ memset(&ireg, 0, sizeof ireg);
+
+ if (strlen(cmdline) >= MAX_CMDLINE_LEN) {
+ printf("cmdline too long\n");
+ return;
+ }
+
+ q = malloc(MAX_CMDLINE_LEN);
+ if (!q) {
+ printf("%s(): Fail to malloc a buffer to exec %s\n",
+ __func__, cmdline);
+ return;
+ }
+
+ kernel = q;
+ p = cmdline;
+ while (*p && !my_isspace(*p))
+ *q++ = *p++;
+ *q++ = '\0';
+
+ args = q;
+ while (*p && my_isspace(*p))
+ p++;
+
+ do {
+ *q++ = ch = *p++;
+ } while (ch);
+
+ if (sysappend) {
+ /* If we've seen some args, insert a space */
+ if (--q != args)
+ *q++ = ' ';
+
+ do_sysappend(q);
+ }
+
+ dprintf("kernel is %s, args = %s type = %d \n", kernel, args, type);
+
+ if (kernel[0] == '.') {
+ /* It might be a type specifier */
+ const struct image_types *t;
+ for (t = image_boot_types; t->name; t++) {
+ if (!strcmp(kernel + 1, t->name)) {
+ /*
+ * Strip the type specifier, apply the
+ * filename extension if COM32 and
+ * retry.
+ */
+ if (t->type == IMAGE_TYPE_COM32) {
+ p = apply_extension(p, ".c32");
+ if (!p)
+ return;
+ }
+
+ execute(p, t->type, sysappend);
+ return;
+ }
+ }
+ }
+
+ if (type == IMAGE_TYPE_COM32) {
+ /*
+ * We may be called with the console in an unknown
+ * state, so initialise it.
+ */
+ ldlinux_console_init();
+
+ /* new entry for elf format c32 */
+ if (create_args_and_load((char *)cmdline))
+ printf("Failed to load COM32 file %s\n", kernel);
+
+ /*
+ * The old COM32 module code would run the module then
+ * drop the user back at the command prompt,
+ * irrespective of how the COM32 module was loaded,
+ * e.g. from vesamenu.c32.
+ */
+ unload_modules_since("ldlinux.c32");
+
+ /* Restore the console */
+ ldlinux_console_init();
+
+ ldlinux_enter_command();
+ } else if (type == IMAGE_TYPE_CONFIG) {
+ char *argv[] = { "ldlinux.c32", NULL, NULL };
+ char *config;
+ int rv;
+
+ /* kernel contains the config file name */
+ config = malloc(FILENAME_MAX);
+ if (!config)
+ goto out;
+
+ realpath(config, kernel, FILENAME_MAX);
+
+ /* If we got anything on the command line, do a chdir */
+ if (*args)
+ mangle_name(config_cwd, args);
+
+ argv[1] = config;
+ rv = start_ldlinux(2, argv);
+ printf("Failed to exec ldlinux.c32: %s\n", strerror(rv));
+ } else if (type == IMAGE_TYPE_LOCALBOOT) {
+ local_boot(strtoul(kernel, NULL, 0));
+ } else if (type == IMAGE_TYPE_PXE || type == IMAGE_TYPE_BSS ||
+ type == IMAGE_TYPE_BOOT) {
+ chainboot_file(kernel, type);
+ } else {
+ /* Need add one item for kernel load, as we don't use
+ * the assembly runkernel.inc any more */
+ new_linux_kernel((char *)kernel, (char *)args);
+ }
+
+out:
+ free((void *)kernel);
+
+ /* If this returns, something went bad; return to menu */
+}