diff options
Diffstat (limited to 'bsps/m32c/m32cbsp/start/linkcmds')
| -rw-r--r-- | bsps/m32c/m32cbsp/start/linkcmds | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/bsps/m32c/m32cbsp/start/linkcmds b/bsps/m32c/m32cbsp/start/linkcmds new file mode 100644 index 0000000000..48cc27e7ae --- /dev/null +++ b/bsps/m32c/m32cbsp/start/linkcmds @@ -0,0 +1,216 @@ +/* + * Declare some sizes. + */ +_RamBase = DEFINED(_RamBase) ? _RamBase : 0x200000; +_RamSize = DEFINED(_RamSize) ? _RamSize : 0x800000; +_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x0; +_StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000; + + +/* Default linker script, for normal executables */ +OUTPUT_FORMAT("elf32-m32c", "elf32-m32c", + "elf32-m32c") +OUTPUT_ARCH(m32c) +ENTRY(_start) +STARTUP(start.o) +/* Do we need any of these for elf? + __DYNAMIC = 0; */ +MEMORY { + RAM (w) : ORIGIN = 0x200000, LENGTH = 0x800000 + VEC (r) : ORIGIN = 0xffffdc, LENGTH = 32 + RESETVEC (r) : ORIGIN = 0xfffffc, LENGTH = 4 +} +SECTIONS +{ + /* There are three cases we care about: First, RW data that must be + in the low 64k. This will always be copied from ROM. Second, RO + data that must be in the low 64k. This may be copied from ROM if + the ROM is above 64k. Third, anything that does not need to be + in the first 64k. Chips normally only have two memory regions; + low ram and either high or low rom. We map the low rom needs + into one of the actual regions. */ + + /* .text goes first so the rom image of ram data will follow it. */ + .text : + { + *(.text .stub .text.* .gnu.linkonce.t.*) + KEEP (*(.text.*personality*)) + /* .gnu.warning sections are handled specially by elf32.em. */ + *(.gnu.warning) + *(.interp .hash .dynsym .dynstr .gnu.version*) + PROVIDE (__etext = .); + PROVIDE (_etext = .); + PROVIDE (etext = .); + . = ALIGN(2); + } > RAM =0 + + /* rodata will either be part of data, or will be in low rom. So we + might be spanning it, or we might not. This lets us include it + in our calculations when appropriate. */ + + .rodata : { + . = ALIGN(2); + *(.plt) + KEEP (*(.init)) + KEEP (*(.fini)) + *(.rodata .rodata.* .gnu.linkonce.r.*) + KEEP (*(SORT(.rtemsroset.*))) + *(.rodata1) + *(.eh_frame_hdr) + KEEP (*(.eh_frame)) + KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) + . = ALIGN(2); + PROVIDE(__romdatastart = .); /* IF_ROROM */ + } > RAM + + .tdata : { + __TLS_Data_begin = .; + *(.tdata .tdata.* .gnu.linkonce.td.*) + __TLS_Data_end = .; + } > RAM + .tbss : { + __TLS_BSS_begin = .; + *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) + __TLS_BSS_end = .; + } > RAM + __TLS_Data_size = __TLS_Data_end - __TLS_Data_begin; + __TLS_Data_begin = __TLS_Data_size != 0 ? __TLS_Data_begin : __TLS_BSS_begin; + __TLS_Data_end = __TLS_Data_size != 0 ? __TLS_Data_end : __TLS_BSS_begin; + __TLS_BSS_size = __TLS_BSS_end - __TLS_BSS_begin; + __TLS_Size = __TLS_BSS_end - __TLS_Data_begin; + __TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss)); + + .data : { + . = ALIGN(32 / 8); + PROVIDE (__datastart = .); /* IF_ROROM */ + PROVIDE (__preinit_array_start = .); + KEEP (*(.preinit_array)) + PROVIDE (__preinit_array_end = .); + PROVIDE (__init_array_start = .); + KEEP (*(.init_array)) + PROVIDE (__init_array_end = .); + PROVIDE (__fini_array_start = .); + KEEP (*(.fini_array)) + PROVIDE (__fini_array_end = .); + + /* gcc uses crtbegin.o to find the start of + the constructors, so we make sure it is + first. Because this is a wildcard, it + doesn't matter if the user does not + actually link against crtbegin.o; the + linker won't look for a file to match a + wildcard. The wildcard also means that it + doesn't matter which directory crtbegin.o + is in. */ + KEEP (*crtbegin*.o(.ctors)) + /* We don't want to include the .ctor section from + from the crtend.o file until after the sorted ctors. + The .ctor section from the crtend file contains the + end of ctors marker and it must be last */ + KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*(.ctors)) + + KEEP (*crtbegin*.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*(.dtors)) + + KEEP (*(.jcr)) + *(.data.rel.ro.local) *(.data.rel.ro*) + *(.dynamic) + + *(.data .data.* .gnu.linkonce.d.*) + KEEP (*(SORT(.rtemsrwset.*))) + KEEP (*(.gnu.linkonce.d.*personality*)) + SORT(CONSTRUCTORS) + *(.data1) + *(.got.plt) *(.got) + + . = ALIGN(2); + _edata = .; + PROVIDE (edata = .); + PROVIDE (__dataend = .); + } > RAM + + /* Note that __romdatacopysize may be ZERO for the simulator, which + knows how to intialize RAM directly. It should ONLY be used for + copying data from ROM to RAM; if you need to know the size of the + data section, subtract the end symbol from the start symbol. */ + /* Note that crt0 assumes this is even; all the start/stop symbols + are also assumed word-aligned. */ + PROVIDE (__romdatacopysize = 0); + + .bss : { + . = ALIGN(2); + PROVIDE (__bssstart = .); + *(.dynbss) + *(.bss .bss.* .gnu.linkonce.b.*) + *(COMMON) + . = ALIGN(2); + PROVIDE (__bssend = .); + _end = .; + PROVIDE (end = .); + } > RAM + PROVIDE (__bsssize = 0); + . = ALIGN(16); + + . += _StackSize; + PROVIDE (__stack = .); + PROVIDE (_WorkAreaBase = .); + . = 0xa00000; + PROVIDE (_WorkAreaEnd = .); + PROVIDE (_WorkAreaSize = _WorkAreaEnd - _WorkAreaBase); + +/* + .stack (0x200000 + 0x800000 - 2) : + { + PROVIDE (__stack = .); + *(.stack) + } +*/ + + .vec : { + *(.vec) + } > VEC + .resetvec : { + *(.resetvec) + } > RESETVEC + + /* The rest are all not normally part of the runtime image. */ + + /* Stabs debugging sections. */ + .stab 0 : { *(.stab) } + .stabstr 0 : { *(.stabstr) } + .stab.excl 0 : { *(.stab.excl) } + .stab.exclstr 0 : { *(.stab.exclstr) } + .stab.index 0 : { *(.stab.index) } + .stab.indexstr 0 : { *(.stab.indexstr) } + .comment 0 : { *(.comment) } + /* DWARF debug sections. + Symbols in the DWARF debugging sections are relative to the beginning + of the section so we begin them at 0. */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + /* SGI/MIPS DWARF 2 extensions */ + .debug_weaknames 0 : { *(.debug_weaknames) } + .debug_funcnames 0 : { *(.debug_funcnames) } + .debug_typenames 0 : { *(.debug_typenames) } + .debug_varnames 0 : { *(.debug_varnames) } + /DISCARD/ : { *(.note.GNU-stack) } +} |