| 1 | # This is for embedded products (no MMU) with ELF.
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| 2 | MACHINE=
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| 3 | SCRIPT_NAME=elf
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| 4 | TEMPLATE_NAME=elf32
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| 5 |
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| 6 | # Symbols have underscore prepended.
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| 7 | OUTPUT_FORMAT="elf32-us-cris"
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| 8 | ARCH=cris
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| 9 | MAXPAGESIZE=32
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| 10 | ENTRY=__start
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| 11 | EMBEDDED=yes
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| 12 | ALIGNMENT=32
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| 13 | TEXT_START_ADDR=0
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| 14 |
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| 15 | # Put crt0 for flash/eprom etc. in this section.
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| 16 | INITIAL_READONLY_SECTIONS='.startup : { KEEP(*(.startup)) }'
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| 17 |
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| 18 | # Setting __Stext to . in TEXT_START_SYMBOLS doesn't get what we want
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| 19 | # most of the time, which is the start of all read-only sections;
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| 20 | # there's at least .startup and .init before it. We have to resort to
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| 21 | # trickery. Note that __Stext is always defined, not PROVIDE:d, since
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| 22 | # external tools look for it.
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| 23 | TEXT_START_SYMBOLS='__Stext = ADDR (.startup);'
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| 24 |
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| 25 | # The __start dance is to get us through assumptions about entry
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| 26 | # symbols, and to clear _start for normal use with sane programs.
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| 27 | EXECUTABLE_SYMBOLS='
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| 28 | __start = DEFINED(__start) ? __start :
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| 29 | DEFINED(_start) ? _start :
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| 30 | DEFINED(start) ? start :
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| 31 | DEFINED(.startup) ? .startup + 2 : 2;
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| 32 | '
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| 33 |
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| 34 | # Smuggle an "OTHER_TEXT_END_SYMBOLS" here.
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| 35 | OTHER_READONLY_SECTIONS="${RELOCATING+PROVIDE (__Etext = .);}"
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| 36 | DATA_START_SYMBOLS='PROVIDE (__Sdata = .);'
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| 37 |
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| 38 | # Smuggle an "OTHER_DATA_END_SYMBOLS" here.
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| 39 | OTHER_SDATA_SECTIONS="${RELOCATING+PROVIDE (__Edata = .);}"
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| 40 |
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| 41 | # If .bss does not immediately follow .data but has its own start
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| 42 | # address, we can't get to it with OTHER_BSS_SYMBOLS, neither can we
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| 43 | # use ADDR(.bss) there. Instead, we use the symbol support for the
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| 44 | # end symbol.
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| 45 | OTHER_BSS_END_SYMBOLS='
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| 46 | PROVIDE (__Ebss = .);
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| 47 | PROVIDE (__end = .);
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| 48 | __Sbss = ADDR (.bss);
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| 49 | PROVIDE (_bss_start = __Sbss);
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| 50 | '
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| 51 |
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| 52 | INIT_START='
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| 53 | . = ALIGN(2);
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| 54 | ___init__start = .;
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| 55 | PROVIDE (___do_global_ctors = .);
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| 56 | SHORT (0xe1fc); /* push srp */
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| 57 | SHORT (0xbe7e);
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| 58 | '
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| 59 |
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| 60 | INIT_END='
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| 61 | SHORT (0x0d3e); /* jump [sp+] */
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| 62 | PROVIDE (__init__end = .);
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| 63 | PROVIDE (___init__end = .);
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| 64 | '
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| 65 |
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| 66 | FINI_START='
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| 67 | . = ALIGN (2);
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| 68 | ___fini__start = .;
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| 69 | PROVIDE (___do_global_dtors = .);
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| 70 | SHORT (0xe1fc); /* push srp */
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| 71 | SHORT (0xbe7e);
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| 72 | '
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| 73 |
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| 74 | FINI_END='
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| 75 | SHORT (0x0d3e); /* jump [sp+] */
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| 76 | PROVIDE (__fini__end = .);
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| 77 | ___fini__end = .;
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| 78 | '
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| 79 |
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| 80 | CTOR_START='
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| 81 | PROVIDE (___ctors = .);
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| 82 | ___elf_ctors_dtors_begin = .;
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| 83 | '
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| 84 |
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| 85 | CTOR_END='
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| 86 | PROVIDE (___ctors_end = .);
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| 87 | '
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| 88 |
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| 89 | DTOR_START='
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| 90 | PROVIDE (___dtors = .);
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| 91 | '
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| 92 |
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| 93 | CTOR_END='
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| 94 | PROVIDE (___dtors_end = .);
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| 95 | ___elf_ctors_dtors_end = .;
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| 96 | '
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| 97 |
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| 98 | # Also add the other symbols provided for rsim/xsim and elinux.
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| 99 | OTHER_END_SYMBOLS='
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| 100 | PROVIDE (__Eall = .);
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| 101 | PROVIDE (__Endmem = 0x10000000);
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| 102 | PROVIDE (__Stacksize = 0);
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| 103 | '
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| 104 | NO_SMALL_DATA=yes
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