projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 7adcbafe | 1 | /* Copyright (C) 2001-2022 Free Software Foundation, Inc. |
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2 | Contributed by Hans-Peter Nilsson <hp@bitrange.com> |
| 3 | ||
| 4 | This file is free software; you can redistribute it and/or modify it | |
| 5 | under the terms of the GNU General Public License as published by the | |
| 748086b7 | 6 | Free Software Foundation; either version 3, or (at your option) any |
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7 | later version. |
| 8 | ||
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9 | This file is distributed in the hope that it will be useful, but |
| 10 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | General Public License for more details. | |
| 13 | ||
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14 | Under Section 7 of GPL version 3, you are granted additional |
| 15 | permissions described in the GCC Runtime Library Exception, version | |
| 16 | 3.1, as published by the Free Software Foundation. | |
| 17 | ||
| 18 | You should have received a copy of the GNU General Public License and | |
| 19 | a copy of the GCC Runtime Library Exception along with this program; | |
| 20 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 21 | <http://www.gnu.org/licenses/>. */ | |
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22 | |
| 23 | % This must be the last file on the link-line, allocating global registers | |
| 24 | % from the top. | |
| 25 | ||
| 26 | % Register $254 is the stack-pointer. | |
| 27 | sp GREG | |
| 28 | ||
| 29 | % Register $253 is frame-pointer. It's not supposed to be used in most | |
| 30 | % functions. | |
| 31 | fp GREG | |
| 32 | ||
| 33 | % $252 is the static chain register; nested functions receive the | |
| 34 | % context of the surrounding function through a pointer passed in this | |
| 35 | % register. | |
| 36 | static_chain GREG | |
| 37 | struct_value_reg GREG | |
| 38 | ||
| 39 | % These registers are used to pass state at an exceptional return (C++). | |
| 40 | eh_state_3 GREG | |
| 41 | eh_state_2 GREG | |
| 42 | eh_state_1 GREG | |
| 43 | eh_state_0 GREG | |
| 44 | ||
| 45 | #ifdef __MMIX_ABI_GNU__ | |
| 46 | ||
| 47 | % Allocate global registers used by the GNU ABI. | |
| 48 | gnu_parm_reg_16 GREG | |
| 49 | gnu_parm_reg_15 GREG | |
| 50 | gnu_parm_reg_14 GREG | |
| 51 | gnu_parm_reg_13 GREG | |
| 52 | gnu_parm_reg_12 GREG | |
| 53 | gnu_parm_reg_11 GREG | |
| 54 | gnu_parm_reg_10 GREG | |
| 55 | gnu_parm_reg_9 GREG | |
| 56 | gnu_parm_reg_8 GREG | |
| 57 | gnu_parm_reg_7 GREG | |
| 58 | gnu_parm_reg_6 GREG | |
| 59 | gnu_parm_reg_5 GREG | |
| 60 | gnu_parm_reg_4 GREG | |
| 61 | gnu_parm_reg_3 GREG | |
| 62 | gnu_parm_reg_2 GREG | |
| 63 | gnu_parm_reg_1 GREG | |
| 64 | ||
| 65 | #endif /* __MMIX_ABI_GNU__ */ | |
| 66 | ||
| 67 | % Provide last part of _init and _fini. | |
| 68 | ||
| 69 | % The return address is stored in the topmost stored register in the | |
| 70 | % register-stack. We ignore the current value in rJ. It is probably | |
| 71 | % garbage because each fragment of _init and _fini may have their own idea | |
| 72 | % of the current stack frame, if they're cut out from a "real" function | |
| 73 | % like in gcc/crtstuff.c. | |
| 74 | ||
| 75 | .section .init,"ax",@progbits | |
| 76 | GETA $255,0F | |
| 77 | PUT rJ,$255 | |
| 78 | POP 0,0 | |
| 79 | 0H PUT rJ,$0 | |
| 80 | POP 0,0 | |
| 81 | ||
| 82 | .section .fini,"ax",@progbits | |
| 83 | GETA $255,0F | |
| 84 | PUT rJ,$255 | |
| 8f840f57 | 85 | POP 0,0 |
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86 | 0H PUT rJ,$0 |
| 87 | POP 0,0 |