367b8112fe
Move all header files for xtensa to arch/xtensa/include and platform and variant header files to the appropriate arch/xtensa/platforms/ and arch/xtensa/variants/ directories. Moving the files gets also rid of all uses of symlinks in the Makefile. This has been completed already for the majority of the architectures and xtensa is one out of six missing. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Chris Zankel <chris@zankel.net>
122 lines
4.3 KiB
C
122 lines
4.3 KiB
C
/*
|
|
* 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 subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1999-2007 Tensilica Inc.
|
|
*/
|
|
|
|
#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) */
|
|
/* 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 */
|
|
/* 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) */
|
|
/* Misc */
|
|
#define XTHAL_SAS_ALL 0xFFFF /* include all default NCP contents */
|
|
|
|
|
|
|
|
/* Macro to save all non-coprocessor (extra) custom TIE and optional state
|
|
* (not including zero-overhead loop registers).
|
|
* Save area ptr (clobbered): ptr (1 byte aligned)
|
|
* Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed)
|
|
*/
|
|
.macro xchal_ncp_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
|
|
xchal_sa_start \continue, \ofs
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-8, 4, 4
|
|
rsr \at1, ACCLO // MAC16 accumulator
|
|
rsr \at2, ACCHI
|
|
s32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
s32i \at2, \ptr, .Lxchal_ofs_ + 4
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 8
|
|
.endif
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-16, 4, 4
|
|
rsr \at1, M0 // MAC16 registers
|
|
rsr \at2, M1
|
|
s32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
s32i \at2, \ptr, .Lxchal_ofs_ + 4
|
|
rsr \at1, M2
|
|
rsr \at2, M3
|
|
s32i \at1, \ptr, .Lxchal_ofs_ + 8
|
|
s32i \at2, \ptr, .Lxchal_ofs_ + 12
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 16
|
|
.endif
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-4, 4, 4
|
|
rsr \at1, SCOMPARE1 // conditional store option
|
|
s32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
|
|
.endif
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-4, 4, 4
|
|
rur \at1, THREADPTR // threadptr option
|
|
s32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
|
|
.endif
|
|
.endm // xchal_ncp_store
|
|
|
|
/* Macro to save all non-coprocessor (extra) custom TIE and optional state
|
|
* (not including zero-overhead loop registers).
|
|
* Save area ptr (clobbered): ptr (1 byte aligned)
|
|
* Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed)
|
|
*/
|
|
.macro xchal_ncp_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
|
|
xchal_sa_start \continue, \ofs
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-8, 4, 4
|
|
l32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
l32i \at2, \ptr, .Lxchal_ofs_ + 4
|
|
wsr \at1, ACCLO // MAC16 accumulator
|
|
wsr \at2, ACCHI
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 8
|
|
.endif
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-16, 4, 4
|
|
l32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
l32i \at2, \ptr, .Lxchal_ofs_ + 4
|
|
wsr \at1, M0 // MAC16 registers
|
|
wsr \at2, M1
|
|
l32i \at1, \ptr, .Lxchal_ofs_ + 8
|
|
l32i \at2, \ptr, .Lxchal_ofs_ + 12
|
|
wsr \at1, M2
|
|
wsr \at2, M3
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 16
|
|
.endif
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-4, 4, 4
|
|
l32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
wsr \at1, SCOMPARE1 // conditional store option
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
|
|
.endif
|
|
.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~\select
|
|
xchal_sa_align \ptr, 0, 1024-4, 4, 4
|
|
l32i \at1, \ptr, .Lxchal_ofs_ + 0
|
|
wur \at1, THREADPTR // threadptr option
|
|
.set .Lxchal_ofs_, .Lxchal_ofs_ + 4
|
|
.endif
|
|
.endm // xchal_ncp_load
|
|
|
|
|
|
|
|
#define XCHAL_NCP_NUM_ATMPS 2
|
|
|
|
|
|
#define XCHAL_SA_NUM_ATMPS 2
|
|
|
|
#endif /*_XTENSA_CORE_TIE_ASM_H*/
|
|
|