162 lines
5.6 KiB
C
162 lines
5.6 KiB
C
/* xtruntime-frames.h - exception stack frames for single-threaded run-time */
|
|
/* $Id: //depot/rel/Eaglenest/Xtensa/OS/include/xtensa/xtruntime-frames.h#1 $ */
|
|
|
|
/*
|
|
* Copyright (c) 2002-2012 Tensilica 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 _XTRUNTIME_FRAMES_H_
|
|
#define _XTRUNTIME_FRAMES_H_
|
|
|
|
#include <xtensa/config/core.h>
|
|
|
|
/* Macros that help define structures for both C and assembler: */
|
|
#if defined(_ASMLANGUAGE) || defined(__ASSEMBLER__)
|
|
#define STRUCT_BEGIN .pushsection .text; .struct 0
|
|
#define STRUCT_FIELD(ctype,size,pre,name) pre##name: .space size
|
|
#define STRUCT_AFIELD(ctype,size,pre,name,n) pre##name: .if n ; .space (size)*(n) ; .endif
|
|
#define STRUCT_AFIELD_A(ctype,size,align,pre,name,n) .balign align ; pre##name: .if n ; .space (size)*(n) ; .endif
|
|
#define STRUCT_END(sname) sname##Size:; .popsection
|
|
#else /*_ASMLANGUAGE||__ASSEMBLER__*/
|
|
#define STRUCT_BEGIN typedef struct {
|
|
#define STRUCT_FIELD(ctype,size,pre,name) ctype name;
|
|
#define STRUCT_AFIELD(ctype,size,pre,name,n) ctype name[n];
|
|
#define STRUCT_AFIELD_A(ctype,size,align,pre,name,n) ctype name[n] __attribute__((aligned(align)));
|
|
#define STRUCT_END(sname) } sname;
|
|
#endif /*_ASMLANGUAGE||__ASSEMBLER__*/
|
|
|
|
|
|
/*
|
|
* Kernel vector mode exception stack frame.
|
|
*
|
|
* NOTE: due to the limited range of addi used in the current
|
|
* kernel exception vector, and the fact that historically
|
|
* the vector is limited to 12 bytes, the size of this
|
|
* stack frame is limited to 128 bytes (currently at 64).
|
|
*/
|
|
STRUCT_BEGIN
|
|
STRUCT_FIELD (long,4,KEXC_,pc) /* "parm" */
|
|
STRUCT_FIELD (long,4,KEXC_,ps)
|
|
STRUCT_AFIELD(long,4,KEXC_,areg, 4) /* a12 .. a15 */
|
|
STRUCT_FIELD (long,4,KEXC_,sar) /* "save" */
|
|
#if XCHAL_HAVE_LOOPS
|
|
STRUCT_FIELD (long,4,KEXC_,lcount)
|
|
STRUCT_FIELD (long,4,KEXC_,lbeg)
|
|
STRUCT_FIELD (long,4,KEXC_,lend)
|
|
#endif
|
|
#if XCHAL_HAVE_MAC16
|
|
STRUCT_FIELD (long,4,KEXC_,acclo)
|
|
STRUCT_FIELD (long,4,KEXC_,acchi)
|
|
STRUCT_AFIELD(long,4,KEXC_,mr, 4)
|
|
#endif
|
|
STRUCT_END(KernelFrame)
|
|
|
|
|
|
/*
|
|
* User vector mode exception stack frame:
|
|
*
|
|
* WARNING: if you modify this structure, you MUST modify the
|
|
* computation of the pad size (ALIGNPAD) accordingly.
|
|
*/
|
|
STRUCT_BEGIN
|
|
STRUCT_FIELD (long,4,UEXC_,pc)
|
|
STRUCT_FIELD (long,4,UEXC_,ps)
|
|
STRUCT_FIELD (long,4,UEXC_,sar)
|
|
STRUCT_FIELD (long,4,UEXC_,vpri)
|
|
#ifdef __XTENSA_CALL0_ABI__
|
|
STRUCT_FIELD (long,4,UEXC_,a0)
|
|
#endif
|
|
STRUCT_FIELD (long,4,UEXC_,a2)
|
|
STRUCT_FIELD (long,4,UEXC_,a3)
|
|
STRUCT_FIELD (long,4,UEXC_,a4)
|
|
STRUCT_FIELD (long,4,UEXC_,a5)
|
|
#ifdef __XTENSA_CALL0_ABI__
|
|
STRUCT_FIELD (long,4,UEXC_,a6)
|
|
STRUCT_FIELD (long,4,UEXC_,a7)
|
|
STRUCT_FIELD (long,4,UEXC_,a8)
|
|
STRUCT_FIELD (long,4,UEXC_,a9)
|
|
STRUCT_FIELD (long,4,UEXC_,a10)
|
|
STRUCT_FIELD (long,4,UEXC_,a11)
|
|
STRUCT_FIELD (long,4,UEXC_,a12)
|
|
STRUCT_FIELD (long,4,UEXC_,a13)
|
|
STRUCT_FIELD (long,4,UEXC_,a14)
|
|
STRUCT_FIELD (long,4,UEXC_,a15)
|
|
#endif
|
|
STRUCT_FIELD (long,4,UEXC_,exccause) /* NOTE: can probably rid of this one (pass direct) */
|
|
#if XCHAL_HAVE_LOOPS
|
|
STRUCT_FIELD (long,4,UEXC_,lcount)
|
|
STRUCT_FIELD (long,4,UEXC_,lbeg)
|
|
STRUCT_FIELD (long,4,UEXC_,lend)
|
|
#endif
|
|
#if XCHAL_HAVE_MAC16
|
|
STRUCT_FIELD (long,4,UEXC_,acclo)
|
|
STRUCT_FIELD (long,4,UEXC_,acchi)
|
|
STRUCT_AFIELD(long,4,UEXC_,mr, 4)
|
|
#endif
|
|
/* ALIGNPAD is the 16-byte alignment padding. */
|
|
#ifdef __XTENSA_CALL0_ABI__
|
|
# define CALL0_ABI 1
|
|
#else
|
|
# define CALL0_ABI 0
|
|
#endif
|
|
#define ALIGNPAD ((3 + XCHAL_HAVE_LOOPS*1 + XCHAL_HAVE_MAC16*2 + CALL0_ABI*1) & 3)
|
|
#if ALIGNPAD
|
|
STRUCT_AFIELD(long,4,UEXC_,pad, ALIGNPAD) /* 16-byte alignment padding */
|
|
#endif
|
|
/*STRUCT_AFIELD_A(char,1,XCHAL_CPEXTRA_SA_ALIGN,UEXC_,ureg, (XCHAL_CPEXTRA_SA_SIZE+3)&-4)*/ /* not used */
|
|
STRUCT_END(UserFrame)
|
|
|
|
|
|
#if defined(_ASMLANGUAGE) || defined(__ASSEMBLER__)
|
|
|
|
|
|
/* Check for UserFrameSize small enough not to require rounding...: */
|
|
/* Skip 16-byte save area, then 32-byte space for 8 regs of call12
|
|
* (which overlaps with 16-byte GCC nested func chaining area),
|
|
* then exception stack frame: */
|
|
.set UserFrameTotalSize, 16+32+UserFrameSize
|
|
/* Greater than 112 bytes? (max range of ADDI, both signs, when aligned to 16 bytes): */
|
|
.ifgt UserFrameTotalSize-112
|
|
/* Round up to 256-byte multiple to accelerate immediate adds: */
|
|
.set UserFrameTotalSize, ((UserFrameTotalSize+255) & 0xFFFFFF00)
|
|
.endif
|
|
# define ESF_TOTALSIZE UserFrameTotalSize
|
|
|
|
#endif /* _ASMLANGUAGE || __ASSEMBLER__ */
|
|
|
|
|
|
#if XCHAL_NUM_CONTEXTS > 1
|
|
/* Structure of info stored on new context's stack for setup: */
|
|
STRUCT_BEGIN
|
|
STRUCT_FIELD (long,4,INFO_,sp)
|
|
STRUCT_FIELD (long,4,INFO_,arg1)
|
|
STRUCT_FIELD (long,4,INFO_,funcpc)
|
|
STRUCT_FIELD (long,4,INFO_,prevps)
|
|
STRUCT_END(SetupInfo)
|
|
#endif
|
|
|
|
|
|
#define KERNELSTACKSIZE 1024
|
|
|
|
|
|
#endif /* _XTRUNTIME_FRAMES_H_ */
|
|
|