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[PATCH v1 20/20] semihosting: Implement SYS_ISERROR
From: |
Alex Bennée |
Subject: |
[PATCH v1 20/20] semihosting: Implement SYS_ISERROR |
Date: |
Fri, 8 Jan 2021 22:42:56 +0000 |
From: Keith Packard <keithp@keithp.com>
Part of Semihosting for AArch32 and AArch64 Release 2.0
Signed-off-by: Keith Packard <keithp@keithp.com>
Message-Id: <20210107170717.2098982-10-keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
hw/semihosting/common-semi.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/semihosting/common-semi.c b/hw/semihosting/common-semi.c
index a631904fb0..23c6e3edcb 100644
--- a/hw/semihosting/common-semi.c
+++ b/hw/semihosting/common-semi.c
@@ -59,6 +59,7 @@
#define TARGET_SYS_WRITE 0x05
#define TARGET_SYS_READ 0x06
#define TARGET_SYS_READC 0x07
+#define TARGET_SYS_ISERROR 0x08
#define TARGET_SYS_ISTTY 0x09
#define TARGET_SYS_SEEK 0x0a
#define TARGET_SYS_FLEN 0x0c
@@ -967,6 +968,9 @@ target_ulong do_common_semihosting(CPUState *cs)
return guestfd_fns[gf->type].readfn(cs, gf, arg1, len);
case TARGET_SYS_READC:
return qemu_semihosting_console_inc(cs->env_ptr);
+ case TARGET_SYS_ISERROR:
+ GET_ARG(0);
+ return (target_long) arg0 < 0 ? 1 : 0;
case TARGET_SYS_ISTTY:
GET_ARG(0);
--
2.20.1
- Re: [PATCH v1 10/20] target/arm: use official org.gnu.gdb.aarch64.sve layout for registers, (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 <=
[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, 2021/01/08
[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