c695724868
Currently, TIME CSRs are emulated only for user-only mode. This patch add TIME CSRs emulation for privileged mode. For privileged mode, the TIME CSRs will return value provided by rdtime callback which is registered by QEMU machine/platform emulation (i.e. CLINT emulation). If rdtime callback is not available then the monitor (i.e. OpenSBI) will trap-n-emulate TIME CSRs in software. We see 25+% performance improvement in hackbench numbers when TIME CSRs are not trap-n-emulated. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com> |
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.. | ||
insn_trans | ||
cpu_bits.h | ||
cpu_helper.c | ||
cpu_user.h | ||
cpu-param.h | ||
cpu.c | ||
cpu.h | ||
csr.c | ||
fpu_helper.c | ||
gdbstub.c | ||
helper.h | ||
insn16-32.decode | ||
insn16-64.decode | ||
insn16.decode | ||
insn32-64.decode | ||
insn32.decode | ||
instmap.h | ||
Makefile.objs | ||
monitor.c | ||
op_helper.c | ||
pmp.c | ||
pmp.h | ||
trace-events | ||
translate.c |