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97 lines
4.2 KiB
C
97 lines
4.2 KiB
C
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef __RVRUNTIME_FRAMES_H__
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#define __RVRUNTIME_FRAMES_H__
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/* Align a value up to nearest n-byte boundary, where n is a power of 2. */
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#define ALIGNUP(n, val) (((val) + (n) - 1) & -(n))
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#ifdef STRUCT_BEGIN
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#undef STRUCT_BEGIN
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#undef STRUCT_FIELD
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#undef STRUCT_AFIELD
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#undef STRUCT_END
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#endif
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#if defined(_ASMLANGUAGE) || defined(__ASSEMBLER__)
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#define STRUCT_BEGIN .pushsection .text; .struct 0
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#define STRUCT_FIELD(ctype,size,asname,name) asname: .space size
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#define STRUCT_AFIELD(ctype,size,asname,name,n) asname: .space (size)*(n)
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#define STRUCT_END(sname) sname##Size:; .popsection
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#else
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#define STRUCT_BEGIN typedef struct {
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#define STRUCT_FIELD(ctype,size,asname,name) ctype name;
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#define STRUCT_AFIELD(ctype,size,asname,name,n) ctype name[n];
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#define STRUCT_END(sname) } sname;
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#endif
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/*
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-------------------------------------------------------------------------------
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INTERRUPT/EXCEPTION STACK FRAME FOR A EXCEPTION OR NESTED INTERRUPT
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-------------------------------------------------------------------------------
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*/
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STRUCT_BEGIN
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STRUCT_FIELD (long, 4, RV_STK_MEPC, mepc) /* Machine Exception Program Counter */
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STRUCT_FIELD (long, 4, RV_STK_RA, ra) /* Return address */
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STRUCT_FIELD (long, 4, RV_STK_SP, sp) /* Stack pointer */
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STRUCT_FIELD (long, 4, RV_STK_GP, gp) /* Global pointer */
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STRUCT_FIELD (long, 4, RV_STK_TP, tp) /* Thread pointer */
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STRUCT_FIELD (long, 4, RV_STK_T0, t0) /* Temporary/alternate link register */
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STRUCT_FIELD (long, 4, RV_STK_T1, t1) /* t1-2: Temporaries */
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STRUCT_FIELD (long, 4, RV_STK_T2, t2)
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STRUCT_FIELD (long, 4, RV_STK_S0, s0) /* Saved register/frame pointer */
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STRUCT_FIELD (long, 4, RV_STK_S1, s1) /* Saved register */
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STRUCT_FIELD (long, 4, RV_STK_A0, a0) /* a0-1: Function arguments/return address */
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STRUCT_FIELD (long, 4, RV_STK_A1, a1)
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STRUCT_FIELD (long, 4, RV_STK_A2, a2) /* a2-7: Function arguments */
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STRUCT_FIELD (long, 4, RV_STK_A3, a3)
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STRUCT_FIELD (long, 4, RV_STK_A4, a4)
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STRUCT_FIELD (long, 4, RV_STK_A5, a5)
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STRUCT_FIELD (long, 4, RV_STK_A6, a6)
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STRUCT_FIELD (long, 4, RV_STK_A7, a7)
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STRUCT_FIELD (long, 4, RV_STK_S2, s2) /* s2-11: Saved registers */
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STRUCT_FIELD (long, 4, RV_STK_S3, s3)
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STRUCT_FIELD (long, 4, RV_STK_S4, s4)
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STRUCT_FIELD (long, 4, RV_STK_S5, s5)
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STRUCT_FIELD (long, 4, RV_STK_S6, s6)
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STRUCT_FIELD (long, 4, RV_STK_S7, s7)
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STRUCT_FIELD (long, 4, RV_STK_S8, s8)
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STRUCT_FIELD (long, 4, RV_STK_S9, s9)
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STRUCT_FIELD (long, 4, RV_STK_S10, s10)
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STRUCT_FIELD (long, 4, RV_STK_S11, s11)
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STRUCT_FIELD (long, 4, RV_STK_T3, t3) /* t3-6: Temporaries */
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STRUCT_FIELD (long, 4, RV_STK_T4, t4)
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STRUCT_FIELD (long, 4, RV_STK_T5, t5)
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STRUCT_FIELD (long, 4, RV_STK_T6, t6)
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STRUCT_FIELD (long, 4, RV_STK_MSTATUS, mstatus) /* Machine Status */
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STRUCT_FIELD (long, 4, RV_STK_MTVEC, mtvec) /* Machine Trap-Vector Base Address */
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STRUCT_FIELD (long, 4, RV_STK_MCAUSE, mcause) /* Machine Trap Cause */
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STRUCT_FIELD (long, 4, RV_STK_MTVAL, mtval) /* Machine Trap Value */
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STRUCT_FIELD (long, 4, RV_STK_MHARTID, mhartid) /* Hardware Thread ID in machine mode */
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STRUCT_END(RvExcFrame)
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#if defined(_ASMLANGUAGE) || defined(__ASSEMBLER__)
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#define RV_STK_SZ1 RvExcFrameSize
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#else
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#define RV_STK_SZ1 sizeof(RvExcFrame)
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#endif
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/*
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* Exception stack frame size, after align up to 16 bytes boundary
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*/
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#define RV_STK_FRMSZ (ALIGNUP(0x10, RV_STK_SZ1))
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#endif /* #ifndef __RVRUNTIME_FRAMES_H__ */
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