Mercurial > hg > CbC > CbC_gcc
comparison gcc/config/mips/irix-crti.asm @ 0:a06113de4d67
first commit
| author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 17 Jul 2009 14:47:48 +0900 |
| parents | |
| children | 77e2b8dfacca |
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| -1:000000000000 | 0:a06113de4d67 |
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| 1 .abicalls | |
| 2 .set noreorder | |
| 3 .set nomacro | |
| 4 | |
| 5 /* The GNU and SGI linkers differ in their implementation of -init and -fini. | |
| 6 With the GNU linker, there can only be a single -init option, and the | |
| 7 linker simply sets DT_INIT to that value. gcc's initialization and | |
| 8 finalization code can go directly in .init, with the prologue and | |
| 9 epilogue of the main initialization routine being provided by external | |
| 10 object files (*crti.o and *crtn.o in this case). | |
| 11 | |
| 12 The SGI linker instead accepts several -init options. It will set DT_INIT | |
| 13 to a linker-created function (placed in .init) that calls each of the -init | |
| 14 functions in turn. If there is any user code in .init, this linker-created | |
| 15 function will be placed after it. Note that such user code is not treated | |
| 16 specially; it will only be called if the -init options arrange for it to | |
| 17 be called. | |
| 18 | |
| 19 In theory, the SGI model should allow the crti, crtn and intermediate code | |
| 20 to go in .init, just like it can with the GNU linker. However, doing this | |
| 21 seems to confuse the linker and triggers an internal error: | |
| 22 | |
| 23 ld32: FATAL 2 : Internal: at ../../ld/mips_code.c mips_code_fixup() | |
| 24 text section overflow! | |
| 25 | |
| 26 (seen with MIPSpro 7.30). We therefore put everything in a special | |
| 27 .gcc_init section instead. */ | |
| 28 | |
| 29 .section .gcc_init,"ax",@progbits | |
| 30 .globl __gcc_init | |
| 31 __gcc_init: | |
| 32 #if _MIPS_SIM == _ABIO32 | |
| 33 addiu $sp,$sp,-16 | |
| 34 sw $31,0($sp) | |
| 35 #else | |
| 36 daddiu $sp,$sp,-16 | |
| 37 sd $31,0($sp) | |
| 38 sd $28,8($sp) | |
| 39 #endif | |
| 40 | |
| 41 .section .gcc_fini,"ax",@progbits | |
| 42 .globl __gcc_fini | |
| 43 __gcc_fini: | |
| 44 #if _MIPS_SIM == _ABIO32 | |
| 45 addiu $sp,$sp,-16 | |
| 46 sw $31,0($sp) | |
| 47 #else | |
| 48 daddiu $sp,$sp,-16 | |
| 49 sd $31,0($sp) | |
| 50 sd $28,8($sp) | |
| 51 #endif | |
| 52 | |
| 53 /* This object will typically be included in the final link for both | |
| 54 shared libraries and executable, and we need to hide the symbols to | |
| 55 prevent possible symbol preemption warnings from the SGI linker. */ | |
| 56 .hidden __gcc_init | |
| 57 .hidden __gcc_fini | |
| 58 |