1/* The following TEXT start address leaves space for the monitor 2 workspace. This linker script links ISA64r2 programs for use with the 3 simulator. We set the ISA explicitly so that we can link objects of 4 different ISAs that are subsets of ISA64r2 but are not extensions of 5 each other (e.g., MIPS32r2 and MIPS64). 6 7 It differs from mti64.ld by using the n32 ABI targets instead of the 8 o32 ABI targets in OUTPUT_FORMAT. */ 9 10ENTRY(_start) 11OUTPUT_ARCH("mips:isa64r2") 12OUTPUT_FORMAT("elf32-ntradlittlemips", "elf32-ntradbigmips", "elf32-ntradlittlemips") 13GROUP(-lc -lidt -lgcc) 14SEARCH_DIR(.) 15__DYNAMIC = 0; 16STARTUP(crt0.o) 17 18/* 19 * Allocate the stack to be at the top of memory, since the stack 20 * grows down 21 */ 22PROVIDE (__stack = 0); 23/* PROVIDE (__global = 0); */ 24 25/* 26 * Initalize some symbols to be zero so we can reference them in the 27 * crt0 without core dumping. These functions are all optional, but 28 * we do this so we can have our crt0 always use them if they exist. 29 * This is so BSPs work better when using the crt0 installed with gcc. 30 * We have to initalize them twice, so we multiple object file 31 * formats, as some prepend an underscore. 32 */ 33PROVIDE (hardware_exit_hook = 0); 34PROVIDE (hardware_hazard_hook = 0); 35PROVIDE (hardware_init_hook = 0); 36PROVIDE (software_init_hook = 0); 37 38SECTIONS 39{ 40 . = 0x80020000; 41 .text : { 42 _ftext = . ; 43 PROVIDE (eprol = .); 44 *(.text) 45 *(.text.*) 46 *(.gnu.linkonce.t.*) 47 *(.mips16.fn.*) 48 *(.mips16.call.*) 49 } 50 .init : { 51 KEEP (*(.init)) 52 } 53 .fini : { 54 KEEP (*(.fini)) 55 } 56 .rel.sdata : { 57 PROVIDE (__runtime_reloc_start = .); 58 *(.rel.sdata) 59 PROVIDE (__runtime_reloc_stop = .); 60 } 61 PROVIDE (etext = .); 62 _etext = .; 63 64 .eh_frame_hdr : { *(.eh_frame_hdr) } 65 .eh_frame : { KEEP (*(.eh_frame)) } 66 .gcc_except_table : { *(.gcc_except_table) } 67 .jcr : { KEEP (*(.jcr)) } 68 .ctors : 69 { 70 /* gcc uses crtbegin.o to find the start of 71 the constructors, so we make sure it is 72 first. Because this is a wildcard, it 73 doesn't matter if the user does not 74 actually link against crtbegin.o; the 75 linker won't look for a file to match a 76 wildcard. The wildcard also means that it 77 doesn't matter which directory crtbegin.o 78 is in. */ 79 80 KEEP (*crtbegin.o(.ctors)) 81 82 /* We don't want to include the .ctor section from 83 from the crtend.o file until after the sorted ctors. 84 The .ctor section from the crtend file contains the 85 end of ctors marker and it must be last */ 86 87 KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) 88 KEEP (*(SORT(.ctors.*))) 89 KEEP (*(.ctors)) 90 } 91 92 .dtors : 93 { 94 KEEP (*crtbegin.o(.dtors)) 95 KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) 96 KEEP (*(SORT(.dtors.*))) 97 KEEP (*(.dtors)) 98 } 99 100 . = .; 101 .MIPS.abiflags : { 102 __MIPS_abiflags_start = .; 103 *(.MIPS.abiflags) 104 __MIPS_abiflags_end = .; 105 } 106 .rodata : { 107 *(.rdata) 108 *(.rodata) 109 *(.rodata.*) 110 *(.gnu.linkonce.r.*) 111 } 112 _fdata = ALIGN(16); 113 .data : { 114 *(.data) 115 *(.data.*) 116 *(.gnu.linkonce.d.*) 117 } 118 . = ALIGN(8); 119 _gp = . + 0x8000; 120 __global = _gp; 121 .lit8 : { 122 *(.lit8) 123 } 124 .lit4 : { 125 *(.lit4) 126 } 127 .sdata : { 128 *(.sdata) 129 *(.sdata.*) 130 *(.gnu.linkonce.s.*) 131 } 132 . = ALIGN(4); 133 PROVIDE (edata = .); 134 _edata = .; 135 _fbss = .; 136 .sbss : { 137 *(.sbss) 138 *(.sbss.*) 139 *(.gnu.linkonce.sb.*) 140 *(.scommon) 141 } 142 .bss : { 143 _bss_start = . ; 144 *(.bss) 145 *(.bss.*) 146 *(.gnu.linkonce.b.*) 147 *(COMMON) 148 } 149 150 . = ALIGN(4); 151 PROVIDE (end = .); 152 _end = .; 153 154 /* DWARF debug sections. 155 Symbols in the DWARF debugging sections are relative to 156 the beginning of the section so we begin them at 0. */ 157 158 /* DWARF 1 */ 159 .debug 0 : { *(.debug) } 160 .line 0 : { *(.line) } 161 162 /* GNU DWARF 1 extensions */ 163 .debug_srcinfo 0 : { *(.debug_srcinfo) } 164 .debug_sfnames 0 : { *(.debug_sfnames) } 165 166 /* DWARF 1.1 and DWARF 2 */ 167 .debug_aranges 0 : { *(.debug_aranges) } 168 .debug_pubnames 0 : { *(.debug_pubnames) } 169 170 /* DWARF 2 */ 171 .debug_info 0 : { *(.debug_info) } 172 .debug_abbrev 0 : { *(.debug_abbrev) } 173 .debug_line 0 : { *(.debug_line) } 174 .debug_frame 0 : { *(.debug_frame) } 175 .debug_str 0 : { *(.debug_str) } 176 .debug_loc 0 : { *(.debug_loc) } 177 .debug_macinfo 0 : { *(.debug_macinfo) } 178 .debug_ranges 0 : { *(.debug_ranges) } 179 180 /* SGI/MIPS DWARF 2 extensions */ 181 .debug_weaknames 0 : { *(.debug_weaknames) } 182 .debug_funcnames 0 : { *(.debug_funcnames) } 183 .debug_typenames 0 : { *(.debug_typenames) } 184 .debug_varnames 0 : { *(.debug_varnames) } 185 186 /* Special sections generated by gcc */ 187 /* Newer GNU linkers strip by default */ 188 .mdebug.abi32 0 : { KEEP(*(.mdebug.abi32)) } 189 .mdebug.abiN32 0 : { KEEP(*(.mdebug.abiN32)) } 190 .mdebug.abi64 0 : { KEEP(*(.mdebug.abi64)) } 191 .mdebug.abiO64 0 : { KEEP(*(.mdebug.abiO64)) } 192 .mdebug.eabi32 0 : { KEEP(*(.mdebug.eabi32)) } 193 .mdebug.eabi64 0 : { KEEP(*(.mdebug.eabi64)) } 194 .gcc_compiled_long32 0 : { KEEP(*(.gcc_compiled_long32)) } 195 .gcc_compiled_long64 0 : { KEEP(*(.gcc_compiled_long64)) } 196} 197