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Annotation of qemu/roms/sgabios/rom16.ld, revision 1.1

1.1     ! root        1: /*
        !             2:  * Linker script for ROM16 binaries
        !             3:  */
        !             4: 
        !             5: /* Script for -z combreloc: combine and sort reloc sections */
        !             6: OUTPUT_FORMAT("elf32-i386", "elf32-i386",
        !             7:              "elf32-i386")
        !             8: OUTPUT_ARCH(i386)
        !             9: EXTERN(_start)
        !            10: ENTRY(_start)
        !            11: SECTIONS
        !            12: {
        !            13:   /* Read-only sections, merged into text segment: */
        !            14:   . = 0x0;
        !            15:   PROVIDE (__executable_start = .);
        !            16: 
        !            17:   .init           :
        !            18:   {
        !            19:     KEEP (*(.init))
        !            20:   } =0x90909090
        !            21:   .text           :
        !            22:   {
        !            23:     *(.text .stub .text.* .gnu.linkonce.t.*)
        !            24:     /* .gnu.warning sections are handled specially by elf32.em.  */
        !            25:     *(.gnu.warning)
        !            26:   } =0x90909090
        !            27:   .fini           :
        !            28:   {
        !            29:     KEEP (*(.fini))
        !            30:   } =0x90909090
        !            31:   PROVIDE (__etext = .);
        !            32:   PROVIDE (_etext = .);
        !            33:   PROVIDE (etext = .);
        !            34:   .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
        !            35:   .rodata1        : { *(.rodata1) }
        !            36: 
        !            37:   /* Ensure the __preinit_array_start label is properly aligned.  We
        !            38:      could instead move the label definition inside the section, but
        !            39:      the linker would then create the section even if it turns out to
        !            40:      be empty, which isn't pretty.  */
        !            41:   . = ALIGN(4);
        !            42:   PROVIDE (__preinit_array_start = .);
        !            43:   .preinit_array     : { *(.preinit_array) }
        !            44:   PROVIDE (__preinit_array_end = .);
        !            45:   PROVIDE (__init_array_start = .);
        !            46:   .init_array     : { *(.init_array) }
        !            47:   PROVIDE (__init_array_end = .);
        !            48:   PROVIDE (__fini_array_start = .);
        !            49:   .fini_array     : { *(.fini_array) }
        !            50:   PROVIDE (__fini_array_end = .);
        !            51:   PROVIDE (__ctors_start = .);
        !            52:   .ctors          :
        !            53:   {
        !            54:     KEEP (*(SORT(.ctors.*)))
        !            55:     KEEP (*(.ctors))
        !            56:   }
        !            57:   PROVIDE (__ctors_end = .);
        !            58:   PROVIDE (__dtors_start = .);
        !            59:   .dtors          :
        !            60:   {
        !            61:     KEEP (*(SORT(.dtors.*)))
        !            62:     KEEP (*(.dtors))
        !            63:   }
        !            64:   PROVIDE (__dtors_end = .);
        !            65: 
        !            66:   /* Adjust the address for the data segment.  Avoid mixing code and
        !            67:      data within same 128-byte chunk. */
        !            68:   . = ALIGN(128);
        !            69: 
        !            70:   .data           :
        !            71:   {
        !            72:     *(.data .data.* .gnu.linkonce.d.*)
        !            73:     SORT(CONSTRUCTORS)
        !            74:   }
        !            75:   .data1          : { *(.data1) }
        !            76:   _edata = .;
        !            77:   PROVIDE (edata = .);
        !            78:   __bss_start = .;
        !            79:   .bss            :
        !            80:   {
        !            81:    *(.dynbss)
        !            82:    *(.bss .bss.* .gnu.linkonce.b.*)
        !            83:    *(COMMON)
        !            84:    /* Align here to ensure that the .bss section occupies space up to
        !            85:       _end.  Align after .bss to ensure correct alignment even if the
        !            86:       .bss section disappears because there are no input sections.  */
        !            87:    . = ALIGN(32 / 8);
        !            88:   }
        !            89:   .csum :
        !            90:   {
        !            91:     . = ALIGN(2048) - 5;
        !            92:     LONG(0xff4c494e);
        !            93:     /* BYTE(_rom_size_byte); */
        !            94:   } =0xffffffff
        !            95:   _end = .;
        !            96:   PROVIDE (end = .);
        !            97:   PROVIDE(_rom_size_byte = (511 + end) / 512);
        !            98: 
        !            99:   /* Stabs debugging sections.  */
        !           100:   .stab          0 : { *(.stab) }
        !           101:   .stabstr       0 : { *(.stabstr) }
        !           102:   .stab.excl     0 : { *(.stab.excl) }
        !           103:   .stab.exclstr  0 : { *(.stab.exclstr) }
        !           104:   .stab.index    0 : { *(.stab.index) }
        !           105:   .stab.indexstr 0 : { *(.stab.indexstr) }
        !           106:   .comment       0 : { *(.comment) }
        !           107:   /* DWARF debug sections.
        !           108:      Symbols in the DWARF debugging sections are relative to the beginning
        !           109:      of the section so we begin them at 0.  */
        !           110:   /* DWARF 1 */
        !           111:   .debug          0 : { *(.debug) }
        !           112:   .line           0 : { *(.line) }
        !           113:   /* GNU DWARF 1 extensions */
        !           114:   .debug_srcinfo  0 : { *(.debug_srcinfo) }
        !           115:   .debug_sfnames  0 : { *(.debug_sfnames) }
        !           116:   /* DWARF 1.1 and DWARF 2 */
        !           117:   .debug_aranges  0 : { *(.debug_aranges) }
        !           118:   .debug_pubnames 0 : { *(.debug_pubnames) }
        !           119:   /* DWARF 2 */
        !           120:   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
        !           121:   .debug_abbrev   0 : { *(.debug_abbrev) }
        !           122:   .debug_line     0 : { *(.debug_line) }
        !           123:   .debug_frame    0 : { *(.debug_frame) }
        !           124:   .debug_str      0 : { *(.debug_str) }
        !           125:   .debug_loc      0 : { *(.debug_loc) }
        !           126:   .debug_macinfo  0 : { *(.debug_macinfo) }
        !           127:   /* SGI/MIPS DWARF 2 extensions */
        !           128:   .debug_weaknames 0 : { *(.debug_weaknames) }
        !           129:   .debug_funcnames 0 : { *(.debug_funcnames) }
        !           130:   .debug_typenames 0 : { *(.debug_typenames) }
        !           131:   .debug_varnames  0 : { *(.debug_varnames) }
        !           132:   /DISCARD/ : { *(.note.GNU-stack) }
        !           133: }

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