407 lines
15 KiB
C
407 lines
15 KiB
C
/****************************************************************************
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* arch/xtensa/include/esp32/tie-asm.h
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* Compile-time assembler definitions dependent on CORE & TIE
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*
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* This header file contains assembly-language definitions (assembly
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* macros, etc.) for this specific Xtensa processor's TIE extensions
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* and options. It is customized to this Xtensa processor configuration.
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*
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* Customer ID=11657; Build=0x5fe96;
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* Copyright (c) 1999-2016 Cadence Design Systems Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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****************************************************************************/
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#ifndef __ARCH_XTENSA_INCLUDE_ESP32_TIE_ASM_H
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#define __ARCH_XTENSA_INCLUDE_ESP32_TIE_ASM_H
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Selection parameter values for save-area save/restore macros: */
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/* Option vs. TIE: */
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#define XTHAL_SAS_TIE 0x0001 /* custom extension or coprocessor */
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#define XTHAL_SAS_OPT 0x0002 /* optional (and not a coprocessor) */
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#define XTHAL_SAS_ANYOT 0x0003 /* both of the above */
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/* Whether used automatically by compiler: */
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#define XTHAL_SAS_NOCC 0x0004 /* not used by compiler w/o special opts/code */
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#define XTHAL_SAS_CC 0x0008 /* used by compiler without special opts/code */
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#define XTHAL_SAS_ANYCC 0x000c /* both of the above */
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/* ABI handling across function calls: */
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#define XTHAL_SAS_CALR 0x0010 /* caller-saved */
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#define XTHAL_SAS_CALE 0x0020 /* callee-saved */
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#define XTHAL_SAS_GLOB 0x0040 /* global across function calls (in thread) */
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#define XTHAL_SAS_ANYABI 0x0070 /* all of the above three */
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/* Misc */
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#define XTHAL_SAS_ALL 0xffff /* include all default NCP contents */
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#define XTHAL_SAS3(optie,ccuse,abi) (((optie) & XTHAL_SAS_ANYOT) | \
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((ccuse) & XTHAL_SAS_ANYCC) | \
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((abi) & XTHAL_SAS_ANYABI))
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/****************************************************************************
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* Assembly Language Macros
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****************************************************************************/
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/* Macro to store all non-coprocessor (extra) custom TIE and optional state
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* (not including zero-overhead loop registers).
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*
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* Required parameters:
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* ptr Save area pointer address register (clobbered)
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* (register must contain a 4 byte aligned address).
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* at1..at4 Four temporary address registers (first
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* XTENSA_NCP_NUM_ATMPS registers are clobbered,
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* the remaining are unused).
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*
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* Optional parameters:
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* continue If macro invoked as part of a larger store sequence, set
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* to 1 if this is not the first in the sequence.
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* Defaults to 0.
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* ofs Offset from start of larger sequence (from value of first
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* ptr in sequence) at which to store. Defaults to next
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* available space(or 0 if <continue> is 0).
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* select Select what category(ies) of registers to store, as a
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* bitmask (see XTHAL_SAS_xxx constants).
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* Defaults to all registers.
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* alloc Select what category(ies) of registers to allocate; if
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* any category is selected here that is not in <select>,
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* space for the corresponding registers is skipped without
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* doing any store.
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*/
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.macro xchal_ncp_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0
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xchal_sa_start \continue, \ofs
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/* Optional global registers used by default by the compiler: */
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.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\select)
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xchal_sa_align \ptr, 0, 1016, 4, 4
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rur.THREADPTR \at1 /* threadptr option */
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s32i \at1, \ptr, .Lxchal_ofs_+0
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
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.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 1016, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
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.endif
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/* Optional caller-saved registers used by default by the compiler: */
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.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 1012, 4, 4
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rsr.ACCLO \at1 /* MAC16 option */
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s32i \at1, \ptr, .Lxchal_ofs_+0
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rsr.ACCHI \at1 /* MAC16 option */
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s32i \at1, \ptr, .Lxchal_ofs_+4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 8
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.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 1012, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 8
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.endif
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/* Optional caller-saved registers not used by default by the compiler: */
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.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 996, 4, 4
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rsr.BR \at1 /* boolean option */
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s32i \at1, \ptr, .Lxchal_ofs_+0
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rsr.SCOMPARE1 \at1 /* conditional store option */
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s32i \at1, \ptr, .Lxchal_ofs_+4
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rsr.M0 \at1 /* MAC16 option */
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s32i \at1, \ptr, .Lxchal_ofs_+8
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rsr.M1 \at1 /* MAC16 option */
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s32i \at1, \ptr, .Lxchal_ofs_+12
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rsr.M2 \at1 /* MAC16 option */
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s32i \at1, \ptr, .Lxchal_ofs_+16
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rsr.M3 \at1 /* MAC16 option */
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s32i \at1, \ptr, .Lxchal_ofs_+20
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 24
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.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 996, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 24
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.endif
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/* Custom caller-saved registers not used by default by the compiler: */
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.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 1008, 4, 4
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rur.F64R_LO \at1 /* ureg 234 */
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s32i \at1, \ptr, .Lxchal_ofs_+0
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rur.F64R_HI \at1 /* ureg 235 */
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s32i \at1, \ptr, .Lxchal_ofs_+4
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rur.F64S \at1 /* ureg 236 */
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s32i \at1, \ptr, .Lxchal_ofs_+8
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 12
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.elseif ((XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 1008, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 12
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.endif
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.endm /* xchal_ncp_store */
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/* Macro to load all non-coprocessor (extra) custom TIE and optional state
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* (not including zero-overhead loop registers).
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*
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* Required parameters:
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* ptr Save area pointer address register (clobbered)
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* (register must contain a 4 byte aligned address).
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* at1..at4 Four temporary address registers (first XTENSA_NCP_NUM_ATMPS
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* registers are clobbered, the remaining are unused).
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*
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* Optional parameters:
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* continue If macro invoked as part of a larger load sequence, set to 1
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* if this is not the first in the sequence. Defaults to 0.
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* ofs Offset from start of larger sequence (from value of first ptr
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* in sequence) at which to load. Defaults to next available space
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* (or 0 if <continue> is 0).
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* select Select what category(ies) of registers to load, as a bitmask
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* (see XTHAL_SAS_xxx constants). Defaults to all registers.
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* alloc Select what category(ies) of registers to allocate; if any
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* category is selected here that is not in <select>, space for
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* the corresponding registers is skipped without doing any load.
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*/
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.macro xchal_ncp_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0
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xchal_sa_start \continue, \ofs
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/* Optional global registers used by default by the compiler: */
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.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\select)
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xchal_sa_align \ptr, 0, 1016, 4, 4
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l32i \at1, \ptr, .Lxchal_ofs_+0
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wur.THREADPTR \at1 /* threadptr option */
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
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.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 1016, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
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.endif
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/* Optional caller-saved registers used by default by the compiler: */
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.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 1012, 4, 4
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l32i \at1, \ptr, .Lxchal_ofs_+0
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wsr.ACCLO \at1 /* MAC16 option */
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l32i \at1, \ptr, .Lxchal_ofs_+4
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wsr.ACCHI \at1 /* MAC16 option */
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 8
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.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 1012, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 8
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.endif
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/* Optional caller-saved registers not used by default by the compiler: */
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.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 996, 4, 4
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l32i \at1, \ptr, .Lxchal_ofs_+0
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wsr.BR \at1 /* boolean option */
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l32i \at1, \ptr, .Lxchal_ofs_+4
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wsr.SCOMPARE1 \at1 /* conditional store option */
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l32i \at1, \ptr, .Lxchal_ofs_+8
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wsr.M0 \at1 /* MAC16 option */
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l32i \at1, \ptr, .Lxchal_ofs_+12
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wsr.M1 \at1 /* MAC16 option */
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l32i \at1, \ptr, .Lxchal_ofs_+16
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wsr.M2 \at1 /* MAC16 option */
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l32i \at1, \ptr, .Lxchal_ofs_+20
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wsr.M3 \at1 /* MAC16 option */
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 24
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.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 996, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 24
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.endif
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/* Custom caller-saved registers not used by default by the compiler: */
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.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 1008, 4, 4
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l32i \at1, \ptr, .Lxchal_ofs_+0
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wur.F64R_LO \at1 /* ureg 234 */
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l32i \at1, \ptr, .Lxchal_ofs_+4
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wur.F64R_HI \at1 /* ureg 235 */
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l32i \at1, \ptr, .Lxchal_ofs_+8
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wur.F64S \at1 /* ureg 236 */
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 12
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.elseif ((XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 1008, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 12
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.endif
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.endm /* xchal_ncp_load */
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#define XTENSA_NCP_NUM_ATMPS 1
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/* Macro to store the state of TIE coprocessor FPU.
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* Required parameters:
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* ptr Save area pointer address register (clobbered)
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* (register must contain a 4 byte aligned address).
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* at1..at4 Four temporary address registers (first XTENSA_CP0_NUM_ATMPS
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* registers are clobbered, the remaining are unused).
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* Optional parameters are the same as for xchal_ncp_store.
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*/
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#define xchal_cp_FPU_store xchal_cp0_store
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.macro xchal_cp0_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0
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xchal_sa_start \continue, \ofs
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/* Custom caller-saved registers not used by default by the compiler: */
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.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 948, 4, 4
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rur.FCR \at1 /* ureg 232 */
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s32i \at1, \ptr, .Lxchal_ofs_+0
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rur.FSR \at1 /* ureg 233 */
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s32i \at1, \ptr, .Lxchal_ofs_+4
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ssi f0, \ptr, .Lxchal_ofs_+8
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ssi f1, \ptr, .Lxchal_ofs_+12
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ssi f2, \ptr, .Lxchal_ofs_+16
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ssi f3, \ptr, .Lxchal_ofs_+20
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ssi f4, \ptr, .Lxchal_ofs_+24
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ssi f5, \ptr, .Lxchal_ofs_+28
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ssi f6, \ptr, .Lxchal_ofs_+32
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ssi f7, \ptr, .Lxchal_ofs_+36
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ssi f8, \ptr, .Lxchal_ofs_+40
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ssi f9, \ptr, .Lxchal_ofs_+44
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ssi f10, \ptr, .Lxchal_ofs_+48
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ssi f11, \ptr, .Lxchal_ofs_+52
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ssi f12, \ptr, .Lxchal_ofs_+56
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ssi f13, \ptr, .Lxchal_ofs_+60
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ssi f14, \ptr, .Lxchal_ofs_+64
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ssi f15, \ptr, .Lxchal_ofs_+68
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 72
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.elseif ((XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 948, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 72
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.endif
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.endm /* xchal_cp0_store */
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/* Macro to load the state of TIE coprocessor FPU.
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* Required parameters:
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* ptr Save area pointer address register (clobbered)
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* (register must contain a 4 byte aligned address).
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* at1..at4 Four temporary address registers (first XTENSA_CP0_NUM_ATMPS
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* registers are clobbered, the remaining are unused).
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* Optional parameters are the same as for xchal_ncp_load.
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*/
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#define xchal_cp_FPU_load xchal_cp0_load
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.macro xchal_cp0_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL alloc=0
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xchal_sa_start \continue, \ofs
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/* Custom caller-saved registers not used by default by the compiler: */
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.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\select)
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xchal_sa_align \ptr, 0, 948, 4, 4
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l32i \at1, \ptr, .Lxchal_ofs_+0
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wur.FCR \at1 /* ureg 232 */
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l32i \at1, \ptr, .Lxchal_ofs_+4
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wur.FSR \at1 /* ureg 233 */
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lsi f0, \ptr, .Lxchal_ofs_+8
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lsi f1, \ptr, .Lxchal_ofs_+12
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lsi f2, \ptr, .Lxchal_ofs_+16
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lsi f3, \ptr, .Lxchal_ofs_+20
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lsi f4, \ptr, .Lxchal_ofs_+24
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lsi f5, \ptr, .Lxchal_ofs_+28
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lsi f6, \ptr, .Lxchal_ofs_+32
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lsi f7, \ptr, .Lxchal_ofs_+36
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lsi f8, \ptr, .Lxchal_ofs_+40
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lsi f9, \ptr, .Lxchal_ofs_+44
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lsi f10, \ptr, .Lxchal_ofs_+48
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lsi f11, \ptr, .Lxchal_ofs_+52
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lsi f12, \ptr, .Lxchal_ofs_+56
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lsi f13, \ptr, .Lxchal_ofs_+60
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lsi f14, \ptr, .Lxchal_ofs_+64
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lsi f15, \ptr, .Lxchal_ofs_+68
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 72
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.elseif ((XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~(\alloc)) == 0
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xchal_sa_align \ptr, 0, 948, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 72
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.endif
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.endm /* xchal_cp0_load */
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#define XTENSA_CP0_NUM_ATMPS 1
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#define XTENSA_SA_NUM_ATMPS 1
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/* Empty macros for unconfigured coprocessors: */
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.macro xchal_cp1_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp1_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp2_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp2_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp3_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp3_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp4_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp4_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp5_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp5_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp6_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp6_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp7_store p a b c d continue=0 ofs=-1 select=-1 ; .endm
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.macro xchal_cp7_load p a b c d continue=0 ofs=-1 select=-1 ; .endm
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#endif /* __ARCH_XTENSA_INCLUDE_ESP32_TIE_ASM_H */
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