Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 311 insertions, 0 deletions

diff --git a/include/grub/dl.h b/include/grub/dl.h
new file mode 100644
index 0000000..b3753c9
--- /dev/null
+++ b/include/grub/dl.h
@@ -0,0 +1,311 @@
+/* dl.h - types and prototypes for loadable module support */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2002,2004,2005,2007,2008,2009  Free Software Foundation, Inc.
+ *
+ *  GRUB 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, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_DL_H
+#define GRUB_DL_H	1
+
+#include <grub/symbol.h>
+#ifndef ASM_FILE
+#include <grub/err.h>
+#include <grub/types.h>
+#include <grub/elf.h>
+#include <grub/list.h>
+#include <grub/misc.h>
+#endif
+
+/*
+ * Macros GRUB_MOD_INIT and GRUB_MOD_FINI are also used by build rules
+ * to collect module names, so we define them only when they are not
+ * defined already.
+ */
+#ifndef ASM_FILE
+
+#ifndef GRUB_MOD_INIT
+
+#if !defined (GRUB_UTIL) && !defined (GRUB_MACHINE_EMU) && !defined (GRUB_KERNEL)
+
+#define GRUB_MOD_INIT(name)	\
+static void grub_mod_init (grub_dl_t mod __attribute__ ((unused))) __attribute__ ((used)); \
+static void \
+grub_mod_init (grub_dl_t mod __attribute__ ((unused)))
+
+#define GRUB_MOD_FINI(name)	\
+static void grub_mod_fini (void) __attribute__ ((used)); \
+static void \
+grub_mod_fini (void)
+
+#elif defined (GRUB_KERNEL)
+
+#define GRUB_MOD_INIT(name)	\
+static void grub_mod_init (grub_dl_t mod __attribute__ ((unused))) __attribute__ ((used)); \
+void \
+grub_##name##_init (void) { grub_mod_init (0); } \
+static void \
+grub_mod_init (grub_dl_t mod __attribute__ ((unused)))
+
+#define GRUB_MOD_FINI(name)	\
+static void grub_mod_fini (void) __attribute__ ((used)); \
+void \
+grub_##name##_fini (void) { grub_mod_fini (); } \
+static void \
+grub_mod_fini (void)
+
+#else
+
+#define GRUB_MOD_INIT(name)	\
+static void grub_mod_init (grub_dl_t mod __attribute__ ((unused))) __attribute__ ((used)); \
+void grub_##name##_init (void); \
+void \
+grub_##name##_init (void) { grub_mod_init (0); } \
+static void \
+grub_mod_init (grub_dl_t mod __attribute__ ((unused)))
+
+#define GRUB_MOD_FINI(name)	\
+static void grub_mod_fini (void) __attribute__ ((used)); \
+void grub_##name##_fini (void); \
+void \
+grub_##name##_fini (void) { grub_mod_fini (); } \
+static void \
+grub_mod_fini (void)
+
+#endif
+
+#endif
+
+#endif
+
+#ifndef ASM_FILE
+#ifdef __APPLE__
+#define GRUB_MOD_SECTION(x) "_" #x ", _" #x ""
+#else
+#define GRUB_MOD_SECTION(x) "." #x
+#endif
+#else
+#ifdef __APPLE__
+#define GRUB_MOD_SECTION(x) _ ## x , _ ##x 
+#else
+#define GRUB_MOD_SECTION(x) . ## x
+#endif
+#endif
+
+/* Me, Vladimir Serbinenko, hereby I add this module check as per new
+   GNU module policy. Note that this license check is informative only.
+   Modules have to be licensed under GPLv3 or GPLv3+ (optionally
+   multi-licensed under other licences as well) independently of the
+   presence of this check and solely by linking (module loading in GRUB
+   constitutes linking) and GRUB core being licensed under GPLv3+.
+   Be sure to understand your license obligations.
+*/
+#ifndef ASM_FILE
+#if GNUC_PREREQ (3,2)
+#define ATTRIBUTE_USED __used__
+#else
+#define ATTRIBUTE_USED __unused__
+#endif
+#define GRUB_MOD_LICENSE(license)	\
+  static char grub_module_license[] __attribute__ ((section (GRUB_MOD_SECTION (module_license)), ATTRIBUTE_USED)) = "LICENSE=" license;
+#define GRUB_MOD_DEP(name)	\
+static const char grub_module_depend_##name[] \
+ __attribute__((section(GRUB_MOD_SECTION(moddeps)), ATTRIBUTE_USED)) = #name
+#define GRUB_MOD_NAME(name)	\
+static const char grub_module_name_##name[] \
+ __attribute__((section(GRUB_MOD_SECTION(modname)), __used__)) = #name
+#else
+#ifdef __APPLE__
+.macro GRUB_MOD_LICENSE
+  .section GRUB_MOD_SECTION(module_license)
+  .ascii "LICENSE="
+  .ascii $0
+  .byte 0
+.endm
+#else
+.macro GRUB_MOD_LICENSE license
+  .section GRUB_MOD_SECTION(module_license), "a"
+  .ascii "LICENSE="
+  .ascii "\license"
+  .byte 0
+.endm
+#endif
+#endif
+
+/* Under GPL license obligations you have to distribute your module
+   under GPLv3(+). However, you can also distribute the same code under
+   another license as long as GPLv3(+) version is provided.
+*/
+#define GRUB_MOD_DUAL_LICENSE(x)
+
+#ifndef ASM_FILE
+
+struct grub_dl_segment
+{
+  struct grub_dl_segment *next;
+  void *addr;
+  grub_size_t size;
+  unsigned section;
+};
+typedef struct grub_dl_segment *grub_dl_segment_t;
+
+struct grub_dl;
+
+struct grub_dl_dep
+{
+  struct grub_dl_dep *next;
+  struct grub_dl *mod;
+};
+typedef struct grub_dl_dep *grub_dl_dep_t;
+
+#ifndef GRUB_UTIL
+struct grub_dl
+{
+  char *name;
+  int ref_count;
+  int persistent;
+  grub_dl_dep_t dep;
+  grub_dl_segment_t segment;
+  Elf_Sym *symtab;
+  grub_size_t symsize;
+  void (*init) (struct grub_dl *mod);
+  void (*fini) (void);
+#if !defined (__i386__) && !defined (__x86_64__)
+  void *got;
+  void *gotptr;
+  void *tramp;
+  void *trampptr;
+#endif
+#ifdef __mips__
+  grub_uint32_t *reginfo;
+#endif
+  void *base;
+  grub_size_t sz;
+  struct grub_dl *next;
+};
+#endif
+typedef struct grub_dl *grub_dl_t;
+
+grub_dl_t grub_dl_load_file (const char *filename);
+grub_dl_t EXPORT_FUNC(grub_dl_load) (const char *name);
+grub_dl_t grub_dl_load_core (void *addr, grub_size_t size);
+grub_dl_t EXPORT_FUNC(grub_dl_load_core_noinit) (void *addr, grub_size_t size);
+int EXPORT_FUNC(grub_dl_unload) (grub_dl_t mod);
+extern void grub_dl_unload_unneeded (void);
+extern int EXPORT_FUNC(grub_dl_ref) (grub_dl_t mod);
+extern int EXPORT_FUNC(grub_dl_unref) (grub_dl_t mod);
+extern int EXPORT_FUNC(grub_dl_ref_count) (grub_dl_t mod);
+
+extern grub_dl_t EXPORT_VAR(grub_dl_head);
+
+#ifndef GRUB_UTIL
+
+#define FOR_DL_MODULES(var) FOR_LIST_ELEMENTS ((var), (grub_dl_head))
+
+#ifdef GRUB_MACHINE_EMU
+void *
+grub_osdep_dl_memalign (grub_size_t align, grub_size_t size);
+void
+grub_dl_osdep_dl_free (void *ptr);
+#endif
+
+static inline void
+grub_dl_init (grub_dl_t mod)
+{
+  if (mod->init)
+    (mod->init) (mod);
+
+  mod->next = grub_dl_head;
+  grub_dl_head = mod;
+}
+
+static inline grub_dl_t
+grub_dl_get (const char *name)
+{
+  grub_dl_t l;
+
+  FOR_DL_MODULES(l)
+    if (grub_strcmp (name, l->name) == 0)
+      return l;
+
+  return 0;
+}
+
+static inline void
+grub_dl_set_persistent (grub_dl_t mod)
+{
+  mod->persistent = 1;
+}
+
+static inline int
+grub_dl_is_persistent (grub_dl_t mod)
+{
+  return mod->persistent;
+}
+
+#endif
+
+grub_err_t grub_dl_register_symbol (const char *name, void *addr,
+				    int isfunc, grub_dl_t mod);
+
+grub_err_t grub_arch_dl_check_header (void *ehdr);
+#ifndef GRUB_UTIL
+grub_err_t
+grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr,
+			       Elf_Shdr *s, grub_dl_segment_t seg);
+#endif
+
+#if defined (_mips)
+#define GRUB_LINKER_HAVE_INIT 1
+void grub_arch_dl_init_linker (void);
+#endif
+
+#define GRUB_IA64_DL_TRAMP_ALIGN 16
+#define GRUB_IA64_DL_GOT_ALIGN 16
+
+grub_err_t
+grub_ia64_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
+				 grub_size_t *got);
+grub_err_t
+grub_arm64_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
+				  grub_size_t *got);
+
+#if defined (__ia64__)
+#define GRUB_ARCH_DL_TRAMP_ALIGN GRUB_IA64_DL_TRAMP_ALIGN
+#define GRUB_ARCH_DL_GOT_ALIGN GRUB_IA64_DL_GOT_ALIGN
+#define grub_arch_dl_get_tramp_got_size grub_ia64_dl_get_tramp_got_size
+#elif defined (__aarch64__)
+#define grub_arch_dl_get_tramp_got_size grub_arm64_dl_get_tramp_got_size
+#else
+grub_err_t
+grub_arch_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
+				 grub_size_t *got);
+#endif
+
+#if defined (__powerpc__) || defined (__mips__) || defined (__arm__) || \
+    (defined(__riscv) && (__riscv_xlen == 32))
+#define GRUB_ARCH_DL_TRAMP_ALIGN 4
+#define GRUB_ARCH_DL_GOT_ALIGN 4
+#endif
+
+#if defined (__aarch64__) || defined (__sparc__) || \
+    (defined(__riscv) && (__riscv_xlen == 64))
+#define GRUB_ARCH_DL_TRAMP_ALIGN 8
+#define GRUB_ARCH_DL_GOT_ALIGN 8
+#endif
+
+#endif
+
+#endif /* ! GRUB_DL_H */