target/linux/generic/patches-2.6.30/028-module_exports.patch

   1 --- a/include/asm-generic/vmlinux.lds.h
   2 +++ b/include/asm-generic/vmlinux.lds.h
   3 @@ -4,6 +4,27 @@
   4  #define LOAD_OFFSET 0
   5  #endif
   6
   7 +#ifndef SYMTAB_KEEP_STR
   8 +#define SYMTAB_KEEP_STR *(__ksymtab_strings.*)
   9 +#define SYMTAB_DISCARD_STR
  10 +#else
  11 +#define SYMTAB_DISCARD_STR *(__ksymtab_strings.*)
  12 +#endif
  13 +
  14 +#ifndef SYMTAB_KEEP
  15 +#define SYMTAB_KEEP *(__ksymtab.*)
  16 +#define SYMTAB_DISCARD
  17 +#else
  18 +#define SYMTAB_DISCARD *(__ksymtab.*)
  19 +#endif
  20 +
  21 +#ifndef SYMTAB_KEEP_GPL
  22 +#define SYMTAB_KEEP_GPL *(__ksymtab_gpl.*)
  23 +#define SYMTAB_DISCARD_GPL
  24 +#else
  25 +#define SYMTAB_DISCARD_GPL *(__ksymtab_gpl.*)
  26 +#endif
  27 +
  28  #ifndef VMLINUX_SYMBOL
  29  #define VMLINUX_SYMBOL(_sym_) _sym_
  30  #endif
  31 @@ -176,35 +197,35 @@
  32         /* Kernel symbol table: Normal symbols */                       \
  33         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
  34                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
  35 -               *(__ksymtab)                                            \
  36 +               SYMTAB_KEEP                                             \
  37                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
  38         }                                                               \
  39                                                                         \
  40         /* Kernel symbol table: GPL-only symbols */                     \
  41         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
  42                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
  43 -               *(__ksymtab_gpl)                                        \
  44 +               SYMTAB_KEEP_GPL                                         \
  45                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
  46         }                                                               \
  47                                                                         \
  48         /* Kernel symbol table: Normal unused symbols */                \
  49         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
  50                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
  51 -               *(__ksymtab_unused)                                     \
  52 +               *(__ksymtab_unused.*)                                   \
  53                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
  54         }                                                               \
  55                                                                         \
  56         /* Kernel symbol table: GPL-only unused symbols */              \
  57         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
  58                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
  59 -               *(__ksymtab_unused_gpl)                                 \
  60 +               *(__ksymtab_unused_gpl.*)                               \
  61                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
  62         }                                                               \
  63                                                                         \
  64         /* Kernel symbol table: GPL-future-only symbols */              \
  65         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
  66                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
  67 -               *(__ksymtab_gpl_future)                                 \
  68 +               *(__ksymtab_gpl_future.*)                               \
  69                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
  70         }                                                               \
  71                                                                         \
  72 @@ -245,7 +266,13 @@
  73                                                                         \
  74         /* Kernel symbol table: strings */                              \
  75          __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) {        \
  76 -               *(__ksymtab_strings)                                    \
  77 +               SYMTAB_KEEP_STR                                         \
  78 +       }                                                               \
  79 +                                                                       \
  80 +       /DISCARD/ : {                                                   \
  81 +               SYMTAB_DISCARD                                          \
  82 +               SYMTAB_DISCARD_GPL                                      \
  83 +               SYMTAB_DISCARD_STR                                      \
  84         }                                                               \
  85                                                                         \
  86         /* __*init sections */                                          \
  87 --- a/include/linux/module.h
  88 +++ b/include/linux/module.h
  89 @@ -187,16 +187,24 @@ void *__symbol_get_gpl(const char *symbo
  90  #define __CRC_SYMBOL(sym, sec)
  91  #endif
  92
  93 +#ifdef MODULE
  94 +#define __EXPORT_SUFFIX(sym)
  95 +#else
  96 +#define __EXPORT_SUFFIX(sym) "." #sym
  97 +#endif
  98 +
  99  /* For every exported symbol, place a struct in the __ksymtab section */
 100  #define __EXPORT_SYMBOL(sym, sec)                              \
 101         extern typeof(sym) sym;                                 \
 102         __CRC_SYMBOL(sym, sec)                                  \
 103         static const char __kstrtab_##sym[]                     \
 104 -       __attribute__((section("__ksymtab_strings"), aligned(1))) \
 105 +       __attribute__((section("__ksymtab_strings"              \
 106 +         __EXPORT_SUFFIX(sym)), aligned(1)))                   \
 107         = MODULE_SYMBOL_PREFIX #sym;                            \
 108         static const struct kernel_symbol __ksymtab_##sym       \
 109         __used                                                  \
 110 -       __attribute__((section("__ksymtab" sec), unused))       \
 111 +       __attribute__((section("__ksymtab" sec                  \
 112 +         __EXPORT_SUFFIX(sym)), unused))                       \
 113         = { (unsigned long)&sym, __kstrtab_##sym }
 114
 115  #define EXPORT_SYMBOL(sym)                                     \
 116 --- a/Makefile
 117 +++ b/Makefile
 118 @@ -994,7 +994,7 @@ prepare: prepare0
 119  # Leave this as default for preprocessing vmlinux.lds.S, which is now
 120  # done in arch/$(ARCH)/kernel/Makefile
 121
 122 -export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
 123 +export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) $(EXTRA_LDSFLAGS)
 124
 125  # The asm symlink changes when $(ARCH) changes.
 126  # Detect this and ask user to run make mrproper
 127 --- a/arch/arm/kernel/vmlinux.lds.S
 128 +++ b/arch/arm/kernel/vmlinux.lds.S
 129 @@ -78,18 +78,6 @@ SECTIONS
 130  #endif
 131         }
 132
 133 -       /DISCARD/ : {                   /* Exit code and data           */
 134 -               EXIT_TEXT
 135 -               EXIT_DATA
 136 -               *(.exitcall.exit)
 137 -               *(.ARM.exidx.exit.text)
 138 -               *(.ARM.extab.exit.text)
 139 -#ifndef CONFIG_MMU
 140 -               *(.fixup)
 141 -               *(__ex_table)
 142 -#endif
 143 -       }
 144 -
 145         .text : {                       /* Real text segment            */
 146                 _text = .;              /* Text and read-only data      */
 147                         __exception_text_start = .;
 148 @@ -194,6 +182,20 @@ SECTIONS
 149                 *(COMMON)
 150                 _end = .;
 151         }
 152 +
 153 +       /DISCARD/ : {                   /* Exit code and data           */
 154 +               EXIT_TEXT
 155 +               EXIT_DATA
 156 +               *(.discard)
 157 +               *(.exitcall.exit)
 158 +               *(.ARM.exidx.exit.text)
 159 +               *(.ARM.extab.exit.text)
 160 +#ifndef CONFIG_MMU
 161 +               *(.fixup)
 162 +               *(__ex_table)
 163 +#endif
 164 +       }
 165 +
 166                                         /* Stabs debugging sections.    */
 167         .stab 0 : { *(.stab) }
 168         .stabstr 0 : { *(.stabstr) }
 169 --- a/arch/powerpc/kernel/vmlinux.lds.S
 170 +++ b/arch/powerpc/kernel/vmlinux.lds.S
 171 @@ -37,12 +37,6 @@ jiffies = jiffies_64 + 4;
 172  #endif
 173  SECTIONS
 174  {
 175 -       /* Sections to be discarded. */
 176 -       /DISCARD/ : {
 177 -       *(.exitcall.exit)
 178 -       EXIT_DATA
 179 -       }
 180 -
 181         . = KERNELBASE;
 182
 183  /*
 184 @@ -295,6 +289,12 @@ SECTIONS
 185                 __bss_stop = .;
 186         }
 187
 188 +       /* Sections to be discarded. */
 189 +       /DISCARD/ : {
 190 +       *(.exitcall.exit)
 191 +       EXIT_DATA
 192 +       }
 193 +
 194         . = ALIGN(PAGE_SIZE);
 195         _end = . ;
 196         PROVIDE32 (end = .);