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https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
150 lines
6.9 KiB
C
150 lines
6.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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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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* This file is autogenerated, please do not edit.
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*
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* Copyright (C) 1999-2015 Cadence Design Systems Inc.
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*/
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#ifndef _XTENSA_CORE_TIE_ASM_H
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#define _XTENSA_CORE_TIE_ASM_H
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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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* 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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* 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 XCHAL_NCP_NUM_ATMPS
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* registers are clobbered, the remaining are unused).
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* Optional parameters:
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* continue If macro invoked as part of a larger store 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 store. 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 store, 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 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 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, 1016, 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, 1016, 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, 1004, 4, 4
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rsr.SCOMPARE1 \at1 // conditional store option
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s32i \at1, \ptr, .Lxchal_ofs_+0
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rsr.M0 \at1 // MAC16 option
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s32i \at1, \ptr, .Lxchal_ofs_+4
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rsr.M1 \at1 // MAC16 option
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s32i \at1, \ptr, .Lxchal_ofs_+8
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rsr.M2 \at1 // MAC16 option
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s32i \at1, \ptr, .Lxchal_ofs_+12
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rsr.M3 \at1 // MAC16 option
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s32i \at1, \ptr, .Lxchal_ofs_+16
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 20
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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, 1004, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 20
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.endif
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.endm // xchal_ncp_store
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/*
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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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* 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 XCHAL_NCP_NUM_ATMPS
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* registers are clobbered, the remaining are unused).
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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 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, 1016, 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, 1016, 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, 1004, 4, 4
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l32i \at1, \ptr, .Lxchal_ofs_+0
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wsr.SCOMPARE1 \at1 // conditional store option
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l32i \at1, \ptr, .Lxchal_ofs_+4
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wsr.M0 \at1 // MAC16 option
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l32i \at1, \ptr, .Lxchal_ofs_+8
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wsr.M1 \at1 // MAC16 option
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l32i \at1, \ptr, .Lxchal_ofs_+12
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wsr.M2 \at1 // MAC16 option
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l32i \at1, \ptr, .Lxchal_ofs_+16
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wsr.M3 \at1 // MAC16 option
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 20
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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, 1004, 4, 4
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.set .Lxchal_ofs_, .Lxchal_ofs_ + 20
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.endif
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.endm // xchal_ncp_load
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#define XCHAL_NCP_NUM_ATMPS 1
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#define XCHAL_SA_NUM_ATMPS 1
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#endif /*_XTENSA_CORE_TIE_ASM_H*/
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