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[PATCH v1 17/20] riscv: Add semihosting support for user mode
From: |
Alex Bennée |
Subject: |
[PATCH v1 17/20] riscv: Add semihosting support for user mode |
Date: |
Fri, 8 Jan 2021 22:42:53 +0000 |
From: Kito Cheng <kito.cheng@sifive.com>
This could made testing more easier and ARM/AArch64 has supported on
their linux user mode too, so I think it should be reasonable.
Verified GCC testsuite with newlib/semihosting.
Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Message-Id: <20210107170717.2098982-7-keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
linux-user/riscv/cpu_loop.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/linux-user/riscv/cpu_loop.c b/linux-user/riscv/cpu_loop.c
index aa9e437875..9665dabb09 100644
--- a/linux-user/riscv/cpu_loop.c
+++ b/linux-user/riscv/cpu_loop.c
@@ -23,6 +23,7 @@
#include "qemu.h"
#include "cpu_loop-common.h"
#include "elf.h"
+#include "hw/semihosting/common-semi.h"
void cpu_loop(CPURISCVState *env)
{
@@ -91,6 +92,10 @@ void cpu_loop(CPURISCVState *env)
sigcode = TARGET_SEGV_MAPERR;
sigaddr = env->badaddr;
break;
+ case RISCV_EXCP_SEMIHOST:
+ env->gpr[xA0] = do_common_semihosting(cs);
+ env->pc += 4;
+ break;
case EXCP_DEBUG:
gdbstep:
signum = TARGET_SIGTRAP;
--
2.20.1
- [PATCH v1 12/20] semihosting: Move ARM semihosting code to shared directories, (continued)
- [PATCH v1 12/20] semihosting: Move ARM semihosting code to shared directories, Alex Bennée, 2021/01/08
- [PATCH v1 13/20] semihosting: Change common-semi API to be architecture-independent, Alex Bennée, 2021/01/08
- [PATCH v1 14/20] semihosting: Change internal common-semi interfaces to use CPUState *, Alex Bennée, 2021/01/08
- [PATCH v1 20/20] semihosting: Implement SYS_ISERROR, Alex Bennée, 2021/01/08
- [PATCH v1 18/20] semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ, Alex Bennée, 2021/01/08
- [PATCH v1 19/20] semihosting: Implement SYS_TMPNAM, Alex Bennée, 2021/01/08
- [PATCH v1 17/20] riscv: Add semihosting support for user mode,
Alex Bennée <=
- [PATCH v1 16/20] riscv: Add semihosting support, Alex Bennée, 2021/01/08
- [PATCH v1 15/20] semihosting: Support SYS_HEAPINFO when env->boot_info is not set, Alex Bennée, 2021/01/08