alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-09-01 14:34:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

vfs: add support for semihosting on ESP32-C3

Browse Source
This commit is contained in:
Ivan Grokhotkov
2021-01-06 00:26:07 +01:00
parent 991874ae43
commit 876f4d6a1c
11 changed files with 464 additions and 260 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
components/hal/esp32h2/include/hal/cpu_ll.h
View File

@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -141,34 +141,6 @@ static inline void cpu_ll_break(void)
return;
}
static inline int cpu_ll_syscall(int sys_nr, int arg1, int arg2, int arg3, int arg4, int* ret_errno)
{
int host_ret, host_errno;
asm volatile ( \
".option push\n" \
".option norvc\n" \
"mv a0, %[sys_nr]\n" \
"mv a1, %[arg1]\n" \
"mv a2, %[arg2]\n" \
"mv a3, %[arg3]\n" \
"mv a4, %[arg4]\n" \
"slli zero,zero,0x1f\n" \
"ebreak\n" \
"srai zero,zero,0x7\n" \
"mv %[host_ret], a0\n" \
"mv %[host_errno], a1\n" \
".option pop\n" \
:[host_ret]"=r"(host_ret),[host_errno]"=r"(host_errno)
:[sys_nr]"r"(sys_nr),[arg1]"r"(arg1),[arg2]"r"(arg2),[arg3]"r"(arg3),[arg4]"r"(arg4)
:"a0","a1","a2","a3","a4");
if (ret_errno) {
*ret_errno = host_errno;
}
return host_ret;
}
static inline void cpu_ll_set_vecbase(const void* vecbase)
{
uintptr_t vecbase_int = (uintptr_t)vecbase;