Commit 7a5f784a authored by Stefan Markovic's avatar Stefan Markovic Committed by Aleksandar Markovic
Browse files

target/mips: Add updating BadInstr and BadInstrX for nanoMIPS 



Update BadInstr and BadInstrX registers for nanoMIPS. The same
support for pre-nanoMIPS remains unimplemented.

Reviewed-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: default avatarYongbok Kim <yongbok.kim@mips.com>
Signed-off-by: default avatarAleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: default avatarStefan Markovic <smarkovic@wavecomp.com>
parent fb32f8c8

target/mips/helper.c

+16 −0
Original line number Diff line number Diff line
@@ -682,6 +682,22 @@ static void set_hflags_for_handler (CPUMIPSState *env) 


static inline void set_badinstr_registers(CPUMIPSState *env)

{

    if (env->insn_flags & ISA_NANOMIPS32) {

        if (env->CP0_Config3 & (1 << CP0C3_BI)) {

            uint32_t instr = (cpu_lduw_code(env, env->active_tc.PC)) << 16;

            if ((instr & 0x10000000) == 0) {

                instr |= cpu_lduw_code(env, env->active_tc.PC + 2);

            }

            env->CP0_BadInstr = instr;



            if ((instr & 0xFC000000) == 0x60000000) {

                instr = cpu_lduw_code(env, env->active_tc.PC + 4) << 16;

                env->CP0_BadInstrX = instr;

            }

        }

        return;

    }



    if (env->hflags & MIPS_HFLAG_M16) {

        /* TODO: add BadInstr support for microMIPS */

        return;