diff options
| author | Keith Packard <keithp@keithp.com> | 2021-01-08 22:42:54 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2021-01-18 10:05:06 +0000 |
| commit | 4d834039c2107cb86931cb3f22ca3de6e4e42b06 (patch) | |
| tree | 2c278742939745f9a9c84aeb0253f12867a7634e /hw | |
| parent | 6b80cb25b4165ae2afa525d084366221a2e9b58d (diff) | |
semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ
These are part of Semihosting for AArch32 and AArch64 Release 2.0
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210107170717.2098982-8-keithp@keithp.com>
Message-Id: <20210108224256.2321-19-alex.bennee@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/semihosting/arm-compat-semi.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/hw/semihosting/arm-compat-semi.c b/hw/semihosting/arm-compat-semi.c index 5fcb8663c6..3d6604dcdd 100644 --- a/hw/semihosting/arm-compat-semi.c +++ b/hw/semihosting/arm-compat-semi.c @@ -38,6 +38,7 @@ #include "hw/semihosting/console.h" #include "hw/semihosting/common-semi.h" #include "qemu/log.h" +#include "qemu/timer.h" #ifdef CONFIG_USER_ONLY #include "qemu.h" @@ -73,6 +74,8 @@ #define TARGET_SYS_EXIT 0x18 #define TARGET_SYS_SYNCCACHE 0x19 #define TARGET_SYS_EXIT_EXTENDED 0x20 +#define TARGET_SYS_ELAPSED 0x30 +#define TARGET_SYS_TICKFREQ 0x31 /* ADP_Stopped_ApplicationExit is used for exit(0), * anything else is implemented as exit(1) */ @@ -837,6 +840,7 @@ target_ulong do_common_semihosting(CPUState *cs) uint32_t ret; uint32_t len; GuestFD *gf; + int64_t elapsed; (void) env; /* Used implicitly by arm lock_user macro */ nr = common_semi_arg(cs, 0) & 0xffffffffU; @@ -1246,6 +1250,18 @@ target_ulong do_common_semihosting(CPUState *cs) } gdb_exit(ret); exit(ret); + case TARGET_SYS_ELAPSED: + elapsed = get_clock() - clock_start; + if (sizeof(target_ulong) == 8) { + SET_ARG(0, elapsed); + } else { + SET_ARG(0, (uint32_t) elapsed); + SET_ARG(1, (uint32_t) (elapsed >> 32)); + } + return 0; + case TARGET_SYS_TICKFREQ: + /* qemu always uses nsec */ + return 1000000000; case TARGET_SYS_SYNCCACHE: /* * Clean the D-cache and invalidate the I-cache for the specified |