| 1 | /* |
| 2 | * arch/ubicom32/include/asm/flat.h |
| 3 | * Definitions to support flat-format executables. |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * |
| 7 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 8 | * |
| 9 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 10 | * it and/or modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation, either version 2 of the |
| 12 | * License, or (at your option) any later version. |
| 13 | * |
| 14 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 15 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 21 | * see <http://www.gnu.org/licenses/>. |
| 22 | * |
| 23 | * Ubicom32 implementation derived from (with many thanks): |
| 24 | * arch/m68knommu |
| 25 | * arch/blackfin |
| 26 | * arch/parisc |
| 27 | */ |
| 28 | |
| 29 | #ifndef _ASM_UBICOM32_FLAT_H |
| 30 | #define _ASM_UBICOM32_FLAT_H |
| 31 | |
| 32 | #define ARCH_FLAT_ALIGN 0x80 |
| 33 | #define ARCH_FLAT_ALIGN_TEXT 1 |
| 34 | |
| 35 | #define R_UBICOM32_32 2 |
| 36 | #define R_UBICOM32_HI24 7 |
| 37 | #define R_UBICOM32_LO7_S 8 |
| 38 | #define R_UBICOM32_LO7_2_S 9 |
| 39 | #define R_UBICOM32_LO7_4_S 10 |
| 40 | #define R_UBICOM32_LO7_D 11 |
| 41 | #define R_UBICOM32_LO7_2_D 12 |
| 42 | #define R_UBICOM32_LO7_4_D 13 |
| 43 | #define R_UBICOM32_LO7_CALLI 15 |
| 44 | #define R_UBICOM32_LO16_CALLI 16 |
| 45 | |
| 46 | extern void ubicom32_flat_put_addr_at_rp(unsigned long *rp, u32_t val, u32_t rval, unsigned long *p); |
| 47 | extern unsigned long ubicom32_flat_get_addr_from_rp(unsigned long *rp, u32_t relval, u32_t flags, unsigned long *p); |
| 48 | |
| 49 | #define flat_stack_align(sp) /* nothing needed */ |
| 50 | #define flat_argvp_envp_on_stack() 1 |
| 51 | #define flat_old_ram_flag(flags) (flags) |
| 52 | #define flat_reloc_valid(reloc, size) ((reloc) <= (size)) |
| 53 | #define flat_get_addr_from_rp(rp, relval, flags, p) (ubicom32_flat_get_addr_from_rp(rp, relval,flags, p)) |
| 54 | #define flat_put_addr_at_rp(rp, val, relval) do {ubicom32_flat_put_addr_at_rp(rp, val, relval, &persistent);} while(0) |
| 55 | #define flat_get_relocate_addr(rel) ((persistent) ? (persistent & 0x07ffffff) : (rel & 0x07ffffff)) |
| 56 | |
| 57 | static inline int flat_set_persistent(unsigned int relval, unsigned long *p) |
| 58 | { |
| 59 | if (*p) { |
| 60 | return 0; |
| 61 | } else { |
| 62 | if ((relval >> 27) != R_UBICOM32_32) { |
| 63 | /* |
| 64 | * Something other than UBICOM32_32. The next entry has the relocation. |
| 65 | */ |
| 66 | *p = relval; |
| 67 | return 1; |
| 68 | } |
| 69 | } |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | #endif /* _ASM_UBICOM32_FLAT_H */ |
| 74 | |
