| /* |
| * tie-asm.h -- compile-time HAL assembler definitions dependent on CORE & TIE |
| * |
| * NOTE: This header file is not meant to be included directly. |
| */ |
| |
| /* This header file contains assembly-language definitions (assembly |
| macros, etc.) for this specific Xtensa processor's TIE extensions |
| and options. It is customized to this Xtensa processor configuration. |
| |
| Copyright (c) 1999-2015 Cadence Design Systems Inc. |
| |
| Permission is hereby granted, free of charge, to any person obtaining |
| a copy of this software and associated documentation files (the |
| "Software"), to deal in the Software without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Software, and to |
| permit persons to whom the Software is furnished to do so, subject to |
| the following conditions: |
| |
| The above copyright notice and this permission notice shall be included |
| in all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ |
| |
| #ifndef _XTENSA_CORE_TIE_ASM_H |
| #define _XTENSA_CORE_TIE_ASM_H |
| |
| /* Selection parameter values for save-area save/restore macros: */ |
| /* Option vs. TIE: */ |
| #define XTHAL_SAS_TIE 0x0001 /* custom extension or coprocessor */ |
| #define XTHAL_SAS_OPT 0x0002 /* optional (and not a coprocessor) */ |
| #define XTHAL_SAS_ANYOT 0x0003 /* both of the above */ |
| /* Whether used automatically by compiler: */ |
| #define XTHAL_SAS_NOCC 0x0004 /* not used by compiler w/o special opts/code */ |
| #define XTHAL_SAS_CC 0x0008 /* used by compiler without special opts/code */ |
| #define XTHAL_SAS_ANYCC 0x000C /* both of the above */ |
| /* ABI handling across function calls: */ |
| #define XTHAL_SAS_CALR 0x0010 /* caller-saved */ |
| #define XTHAL_SAS_CALE 0x0020 /* callee-saved */ |
| #define XTHAL_SAS_GLOB 0x0040 /* global across function calls (in thread) */ |
| #define XTHAL_SAS_ANYABI 0x0070 /* all of the above three */ |
| /* Misc */ |
| #define XTHAL_SAS_ALL 0xFFFF /* include all default NCP contents */ |
| #define XTHAL_SAS3(optie,ccuse,abi) ( ((optie) & XTHAL_SAS_ANYOT) \ |
| | ((ccuse) & XTHAL_SAS_ANYCC) \ |
| | ((abi) & XTHAL_SAS_ANYABI) ) |
| |
| |
| /* |
| * Macro to store all non-coprocessor (extra) custom TIE and optional state |
| * (not including zero-overhead loop registers). |
| * Required parameters: |
| * ptr Save area pointer address register (clobbered) |
| * (register must contain a 4 byte aligned address). |
| * at1..at4 Four temporary address registers (first XCHAL_NCP_NUM_ATMPS |
| * registers are clobbered, the remaining are unused). |
| * Optional parameters: |
| * continue If macro invoked as part of a larger store sequence, set to 1 |
| * if this is not the first in the sequence. Defaults to 0. |
| * ofs Offset from start of larger sequence (from value of first ptr |
| * in sequence) at which to store. Defaults to next available space |
| * (or 0 if <continue> is 0). |
| * select Select what category(ies) of registers to store, as a bitmask |
| * (see XTHAL_SAS_xxx constants). Defaults to all registers. |
| * alloc Select what category(ies) of registers to allocate; if any |
| * category is selected here that is not in <select>, space for |
| * the corresponding registers is skipped without doing any store. |
| */ |
| .macro xchal_ncp_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0 |
| xchal_sa_start \continue, \ofs |
| // Optional caller-saved registers used by default by the compiler: |
| .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\select) |
| xchal_sa_align \ptr, 0, 1016, 4, 4 |
| rsr.ACCLO \at1 // MAC16 option |
| s32i \at1, \ptr, .Lxchal_ofs_+0 |
| rsr.ACCHI \at1 // MAC16 option |
| s32i \at1, \ptr, .Lxchal_ofs_+4 |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 8 |
| .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\alloc)) == 0 |
| xchal_sa_align \ptr, 0, 1016, 4, 4 |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 8 |
| .endif |
| // Optional caller-saved registers not used by default by the compiler: |
| .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select) |
| xchal_sa_align \ptr, 0, 1004, 4, 4 |
| rsr.SCOMPARE1 \at1 // conditional store option |
| s32i \at1, \ptr, .Lxchal_ofs_+0 |
| rsr.M0 \at1 // MAC16 option |
| s32i \at1, \ptr, .Lxchal_ofs_+4 |
| rsr.M1 \at1 // MAC16 option |
| s32i \at1, \ptr, .Lxchal_ofs_+8 |
| rsr.M2 \at1 // MAC16 option |
| s32i \at1, \ptr, .Lxchal_ofs_+12 |
| rsr.M3 \at1 // MAC16 option |
| s32i \at1, \ptr, .Lxchal_ofs_+16 |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 20 |
| .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0 |
| xchal_sa_align \ptr, 0, 1004, 4, 4 |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 20 |
| .endif |
| .endm // xchal_ncp_store |
| |
| /* |
| * Macro to load all non-coprocessor (extra) custom TIE and optional state |
| * (not including zero-overhead loop registers). |
| * Required parameters: |
| * ptr Save area pointer address register (clobbered) |
| * (register must contain a 4 byte aligned address). |
| * at1..at4 Four temporary address registers (first XCHAL_NCP_NUM_ATMPS |
| * registers are clobbered, the remaining are unused). |
| * Optional parameters: |
| * continue If macro invoked as part of a larger load sequence, set to 1 |
| * if this is not the first in the sequence. Defaults to 0. |
| * ofs Offset from start of larger sequence (from value of first ptr |
| * in sequence) at which to load. Defaults to next available space |
| * (or 0 if <continue> is 0). |
| * select Select what category(ies) of registers to load, as a bitmask |
| * (see XTHAL_SAS_xxx constants). Defaults to all registers. |
| * alloc Select what category(ies) of registers to allocate; if any |
| * category is selected here that is not in <select>, space for |
| * the corresponding registers is skipped without doing any load. |
| */ |
| .macro xchal_ncp_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0 |
| xchal_sa_start \continue, \ofs |
| // Optional caller-saved registers used by default by the compiler: |
| .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\select) |
| xchal_sa_align \ptr, 0, 1016, 4, 4 |
| l32i \at1, \ptr, .Lxchal_ofs_+0 |
| wsr.ACCLO \at1 // MAC16 option |
| l32i \at1, \ptr, .Lxchal_ofs_+4 |
| wsr.ACCHI \at1 // MAC16 option |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 8 |
| .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\alloc)) == 0 |
| xchal_sa_align \ptr, 0, 1016, 4, 4 |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 8 |
| .endif |
| // Optional caller-saved registers not used by default by the compiler: |
| .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select) |
| xchal_sa_align \ptr, 0, 1004, 4, 4 |
| l32i \at1, \ptr, .Lxchal_ofs_+0 |
| wsr.SCOMPARE1 \at1 // conditional store option |
| l32i \at1, \ptr, .Lxchal_ofs_+4 |
| wsr.M0 \at1 // MAC16 option |
| l32i \at1, \ptr, .Lxchal_ofs_+8 |
| wsr.M1 \at1 // MAC16 option |
| l32i \at1, \ptr, .Lxchal_ofs_+12 |
| wsr.M2 \at1 // MAC16 option |
| l32i \at1, \ptr, .Lxchal_ofs_+16 |
| wsr.M3 \at1 // MAC16 option |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 20 |
| .elseif ((XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0 |
| xchal_sa_align \ptr, 0, 1004, 4, 4 |
| .set .Lxchal_ofs_, .Lxchal_ofs_ + 20 |
| .endif |
| .endm // xchal_ncp_load |
| |
| |
| #define XCHAL_NCP_NUM_ATMPS 1 |
| |
| #define XCHAL_SA_NUM_ATMPS 1 |
| |
| #endif /*_XTENSA_CORE_TIE_ASM_H*/ |
| |
