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arch/tricore: Support setjmp and longjmp.

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Add setjmp/longjmp support for TriCore architecture using iLLD
intrinsics to save and restore the CSA (Context Save Area) chain.

This implementation saves upper/lower context registers and walks
the CSA linked list to restore the full call context on longjmp.

Signed-off-by: zhangyuan29 <zhangyuan29@xiaomi.com>
This commit is contained in:
zhangyuan29
2025-01-06 23:29:07 +08:00
committed by Xiang Xiao
parent fd907e6ef4
commit e087d0f79d
7 changed files with 203 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/tricore/Kconfig
+2
View File
@@ -32,6 +32,7 @@ config ARCH_TC1V6
select ARCH_HAVE_SETJMP
select ARCH_HAVE_RESET
select ARCH_HAVE_TESTSET
select ARCH_SETJMP_H
default n
config ARCH_TC1V8
@@ -46,6 +47,7 @@ config ARCH_TC1V8
select ARCH_HAVE_SETJMP
select ARCH_HAVE_RESET
select ARCH_HAVE_TESTSET
select ARCH_SETJMP_H
default n
config ARCH_FAMILY
arch/tricore/include/setjmp.h
+89
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@@ -0,0 +1,89 @@
/****************************************************************************
* arch/tricore/include/setjmp.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_TRICORE_INCLUDE_SETJUMP_H
#define __ARCH_TRICORE_INCLUDE_SETJUMP_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <stdint.h>
/****************************************************************************
* Pre-processor Prototypes
****************************************************************************/
#define JB_LPCXI 0
#define JB_LA11 1
#define JB_A2 2
#define JB_A3 3
#define JB_D0 4
#define JB_D1 5
#define JB_D2 6
#define JB_D3 7
#define JB_A4 8
#define JB_A5 9
#define JB_A6 10
#define JB_A7 11
#define JB_D4 12
#define JB_D5 13
#define JB_D6 14
#define JB_D7 15
#define JB_UA11 16
#define JB_REG_NUM 17
/****************************************************************************
* Public Types
****************************************************************************/
struct setjmp_buf_s
{
uintptr_t regs[JB_REG_NUM];
};
/* Traditional typedef for setjmp_buf */
typedef struct setjmp_buf_s jmp_buf[1];
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
int setjmp(jmp_buf env);
void longjmp(jmp_buf env, int val);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ARCH_TRICORE_INCLUDE_SETJUMP_H */
libs/libc/machine/Make.defs
+3
View File
@@ -53,6 +53,9 @@ endif
ifeq ($(CONFIG_ARCH_SPARC),y)
include $(TOPDIR)/libs/libc/machine/sparc/Make.defs
endif
ifeq ($(CONFIG_ARCH_TRICORE),y)
include $(TOPDIR)/libs/libc/machine/tricore/Make.defs
endif
DEPPATH += --dep-path machine
VPATH += :machine
libs/libc/machine/tricore/CMakeLists.txt
+8
View File
@@ -19,3 +19,11 @@
# the License.
#
# ##############################################################################
set(SRCS)
if(CONFIG_ARCH_SETJMP_H)
list(APPEND SRCS arch_setjmp.c)
endif()
target_sources(c PRIVATE ${SRCS})
libs/libc/machine/tricore/Kconfig
+4
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@@ -0,0 +1,4 @@
#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
libs/libc/machine/tricore/Make.defs
+28
View File
@@ -0,0 +1,28 @@
############################################################################
# libs/libc/machine/tricore/Make.defs
#
# SPDX-License-Identifier: Apache-2.0
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################
ifeq ($(CONFIG_ARCH_SETJMP_H),y)
CSRCS += arch_setjmp.c
endif
DEPPATH += --dep-path machine/tricore
VPATH += :machine/tricore
libs/libc/machine/tricore/arch_setjmp.c
+69
View File
@@ -0,0 +1,69 @@
/****************************************************************************
* libs/libc/machine/tricore/arch_setjmp.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <string.h>
#include <arch/setjmp.h>
#include <nuttx/arch.h>
#include <IfxCpu_reg.h>
#include <IfxCpu_Intrinsics.h>
/****************************************************************************
* Public Functions
****************************************************************************/
int setjmp(jmp_buf env)
{
uintptr_t *regs;
uintptr_t pcxi;
env->regs[JB_UA11] = (uintptr_t)__getA11();
pcxi = __mfcr(CPU_PCXI);
regs = tricore_csa2addr(pcxi);
memcpy(env, regs, TC_CONTEXT_SIZE);
return 0;
}
void longjmp(jmp_buf env, int val)
{
void *func = (void *)env->regs[JB_UA11];
uintptr_t *regs;
uintptr_t pcxi;
pcxi = __mfcr(CPU_PCXI);
regs = tricore_csa2addr(pcxi);
memcpy(regs, env, TC_CONTEXT_SIZE);
if (val == 0)
{
val = 1;
}
__moveToDataParamRet(val);
__jumpToFunctionWithLink(func);
}