From f95a85de0082010e4af83e26e99299d601bb48d6 Mon Sep 17 00:00:00 2001 From: Steven Le Rouzic Date: Mon, 13 May 2024 00:04:44 +0200 Subject: Some work on CSR --- emulator/csr_machine_information.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 emulator/csr_machine_information.c (limited to 'emulator/csr_machine_information.c') diff --git a/emulator/csr_machine_information.c b/emulator/csr_machine_information.c new file mode 100644 index 0000000..38a33a1 --- /dev/null +++ b/emulator/csr_machine_information.c @@ -0,0 +1,21 @@ +#include "emulator/csr.h" + +#include "emulator/hart.h" + +static uint32_t csr_minfo_zero(Hart* hart, uint32_t v, enum CsrAction a) +{ + return 0; +} + +static uint32_t csr_mhartid(Hart* hart, uint32_t v, enum CsrAction a) +{ + return hart->hartid; +} + +void csr_init_machine_information(Hart* hart) +{ + hart->csrs[CSR_MVENDORID].action = csr_minfo_zero; + hart->csrs[CSR_MARCHID].action = csr_minfo_zero; + hart->csrs[CSR_MIMPID].action = csr_minfo_zero; + hart->csrs[CSR_MHARTID].action = csr_mhartid; +} -- cgit