From 54467c126b19230f4d722b67ed7ae5807ed8f5ce Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 18 Feb 2021 09:12:28 -0800 Subject: xtensa: ISS: split simcall implementation from semihosting interface Disconnect existing ISS simcall implementation from the semihosting interface to allow for alternative implementations selectable at configure time. Signed-off-by: Max Filippov --- .../platforms/iss/include/platform/simcall-iss.h | 73 ++++++++++++++++++++++ .../platforms/iss/include/platform/simcall.h | 70 +-------------------- 2 files changed, 75 insertions(+), 68 deletions(-) create mode 100644 arch/xtensa/platforms/iss/include/platform/simcall-iss.h (limited to 'arch/xtensa/platforms') diff --git a/arch/xtensa/platforms/iss/include/platform/simcall-iss.h b/arch/xtensa/platforms/iss/include/platform/simcall-iss.h new file mode 100644 index 000000000000..5a1e7a1f182e --- /dev/null +++ b/arch/xtensa/platforms/iss/include/platform/simcall-iss.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2021 Cadence Design Systems Inc. */ + +#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H +#define _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H + +/* + * System call like services offered by the simulator host. + */ + +#define SYS_nop 0 /* unused */ +#define SYS_exit 1 /*x*/ +#define SYS_fork 2 +#define SYS_read 3 /*x*/ +#define SYS_write 4 /*x*/ +#define SYS_open 5 /*x*/ +#define SYS_close 6 /*x*/ +#define SYS_rename 7 /*x 38 - waitpid */ +#define SYS_creat 8 /*x*/ +#define SYS_link 9 /*x (not implemented on WIN32) */ +#define SYS_unlink 10 /*x*/ +#define SYS_execv 11 /* n/a - execve */ +#define SYS_execve 12 /* 11 - chdir */ +#define SYS_pipe 13 /* 42 - time */ +#define SYS_stat 14 /* 106 - mknod */ +#define SYS_chmod 15 +#define SYS_chown 16 /* 202 - lchown */ +#define SYS_utime 17 /* 30 - break */ +#define SYS_wait 18 /* n/a - oldstat */ +#define SYS_lseek 19 /*x*/ +#define SYS_getpid 20 +#define SYS_isatty 21 /* n/a - mount */ +#define SYS_fstat 22 /* 108 - oldumount */ +#define SYS_time 23 /* 13 - setuid */ +#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */ +#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */ +#define SYS_socket 26 +#define SYS_sendto 27 +#define SYS_recvfrom 28 +#define SYS_select_one 29 /* not compatible select, one file descriptor at the time */ +#define SYS_bind 30 +#define SYS_ioctl 31 + +#define SYS_iss_argc 1000 /* returns value of argc */ +#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */ +#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */ + +/* + * SYS_select_one specifiers + */ + +#define XTISS_SELECT_ONE_READ 1 +#define XTISS_SELECT_ONE_WRITE 2 +#define XTISS_SELECT_ONE_EXCEPT 3 + +static int errno; + +static inline int __simc(int a, int b, int c, int d) +{ + register int a1 asm("a2") = a; + register int b1 asm("a3") = b; + register int c1 asm("a4") = c; + register int d1 asm("a5") = d; + __asm__ __volatile__ ( + "simcall\n" + : "+r"(a1), "+r"(b1) + : "r"(c1), "r"(d1) + : "memory"); + errno = b1; + return a1; +} + +#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H */ diff --git a/arch/xtensa/platforms/iss/include/platform/simcall.h b/arch/xtensa/platforms/iss/include/platform/simcall.h index 5ba2454e6c37..612080bf0b3d 100644 --- a/arch/xtensa/platforms/iss/include/platform/simcall.h +++ b/arch/xtensa/platforms/iss/include/platform/simcall.h @@ -6,78 +6,13 @@ * for more details. * * Copyright (C) 2001 Tensilica Inc. - * Copyright (C) 2017 Cadence Design Systems Inc. + * Copyright (C) 2017 - 2021 Cadence Design Systems Inc. */ #ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H #define _XTENSA_PLATFORM_ISS_SIMCALL_H - -/* - * System call like services offered by the simulator host. - */ - -#define SYS_nop 0 /* unused */ -#define SYS_exit 1 /*x*/ -#define SYS_fork 2 -#define SYS_read 3 /*x*/ -#define SYS_write 4 /*x*/ -#define SYS_open 5 /*x*/ -#define SYS_close 6 /*x*/ -#define SYS_rename 7 /*x 38 - waitpid */ -#define SYS_creat 8 /*x*/ -#define SYS_link 9 /*x (not implemented on WIN32) */ -#define SYS_unlink 10 /*x*/ -#define SYS_execv 11 /* n/a - execve */ -#define SYS_execve 12 /* 11 - chdir */ -#define SYS_pipe 13 /* 42 - time */ -#define SYS_stat 14 /* 106 - mknod */ -#define SYS_chmod 15 -#define SYS_chown 16 /* 202 - lchown */ -#define SYS_utime 17 /* 30 - break */ -#define SYS_wait 18 /* n/a - oldstat */ -#define SYS_lseek 19 /*x*/ -#define SYS_getpid 20 -#define SYS_isatty 21 /* n/a - mount */ -#define SYS_fstat 22 /* 108 - oldumount */ -#define SYS_time 23 /* 13 - setuid */ -#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */ -#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */ -#define SYS_socket 26 -#define SYS_sendto 27 -#define SYS_recvfrom 28 -#define SYS_select_one 29 /* not compatible select, one file descriptor at the time */ -#define SYS_bind 30 -#define SYS_ioctl 31 - -#define SYS_iss_argc 1000 /* returns value of argc */ -#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */ -#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */ - -/* - * SYS_select_one specifiers - */ - -#define XTISS_SELECT_ONE_READ 1 -#define XTISS_SELECT_ONE_WRITE 2 -#define XTISS_SELECT_ONE_EXCEPT 3 - -static int errno; - -static inline int __simc(int a, int b, int c, int d) -{ - register int a1 asm("a2") = a; - register int b1 asm("a3") = b; - register int c1 asm("a4") = c; - register int d1 asm("a5") = d; - __asm__ __volatile__ ( - "simcall\n" - : "+r"(a1), "+r"(b1) - : "r"(c1), "r"(d1) - : "memory"); - errno = b1; - return a1; -} +#include static inline int simc_exit(int exit_code) { @@ -137,4 +72,3 @@ static inline void simc_argv(void *buf) } #endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */ - -- cgit v1.2.3