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/*
* 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.
* This file is autogenerated, please do not edit.
*
* Copyright (C) 1999-2010 Tensilica Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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 save 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 global register used by default by the compiler:
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\select)
xchal_sa_align \ptr, 0, 1020, 4, 4
rur.THREADPTR \at1 // threadptr option
s32i \at1, \ptr, .Lxchal_ofs_+0
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\alloc)) == 0
xchal_sa_align \ptr, 0, 1020, 4, 4
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
.endif
// 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 \at1, ACCLO // MAC16 option
s32i \at1, \ptr, .Lxchal_ofs_+0
rsr \at1, ACCHI // 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 \at1, M0 // MAC16 option
s32i \at1, \ptr, .Lxchal_ofs_+0
rsr \at1, M1 // MAC16 option
s32i \at1, \ptr, .Lxchal_ofs_+4
rsr \at1, M2 // MAC16 option
s32i \at1, \ptr, .Lxchal_ofs_+8
rsr \at1, M3 // MAC16 option
s32i \at1, \ptr, .Lxchal_ofs_+12
rsr \at1, SCOMPARE1 // conditional store 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 restore 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 global register used by default by the compiler:
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\select)
xchal_sa_align \ptr, 0, 1020, 4, 4
l32i \at1, \ptr, .Lxchal_ofs_+0
wur.THREADPTR \at1 // threadptr option
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
.elseif ((XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~(\alloc)) == 0
xchal_sa_align \ptr, 0, 1020, 4, 4
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
.endif
// 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 \at1, ACCLO // MAC16 option
l32i \at1, \ptr, .Lxchal_ofs_+4
wsr \at1, ACCHI // 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 \at1, M0 // MAC16 option
l32i \at1, \ptr, .Lxchal_ofs_+4
wsr \at1, M1 // MAC16 option
l32i \at1, \ptr, .Lxchal_ofs_+8
wsr \at1, M2 // MAC16 option
l32i \at1, \ptr, .Lxchal_ofs_+12
wsr \at1, M3 // MAC16 option
l32i \at1, \ptr, .Lxchal_ofs_+16
wsr \at1, SCOMPARE1 // conditional store 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*/
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