@@ -775,7 +775,12 @@ static inline bool semu_is_interrupt(emu_state_t *emu)
775775 return __atomic_load_n (& emu -> is_interrupted , __ATOMIC_RELAXED );
776776}
777777
778- static int semu_read_reg (void * args , int regno , size_t * data )
778+ static size_t semu_get_reg_bytes (UNUSED int regno )
779+ {
780+ return 4 ;
781+ }
782+ 783+ static int semu_read_reg (void * args , int regno , void * data )
779784{
780785 emu_state_t * emu = (emu_state_t * ) args ;
781786
@@ -785,9 +790,9 @@ static int semu_read_reg(void *args, int regno, size_t *data)
785790 assert ((uint32_t ) emu -> curr_cpuid < emu -> vm .n_hart );
786791
787792 if (regno == 32 )
788- * data = emu -> vm .hart [emu -> curr_cpuid ]-> pc ;
793+ * ( uint32_t * ) data = emu -> vm .hart [emu -> curr_cpuid ]-> pc ;
789794 else
790- * data = emu -> vm .hart [emu -> curr_cpuid ]-> x_regs [regno ];
795+ * ( uint32_t * ) data = emu -> vm .hart [emu -> curr_cpuid ]-> x_regs [regno ];
791796
792797 return 0 ;
793798}
@@ -845,6 +850,7 @@ static int semu_run_debug(emu_state_t *emu)
845850
846851 gdbstub_t gdbstub ;
847852 struct target_ops gdbstub_ops = {
853+ .get_reg_bytes = semu_get_reg_bytes ,
848854 .read_reg = semu_read_reg ,
849855 .write_reg = NULL ,
850856 .read_mem = semu_read_mem ,
@@ -864,7 +870,6 @@ static int semu_run_debug(emu_state_t *emu)
864870 (arch_info_t ){
865871 .smp = vm -> n_hart ,
866872 .reg_num = 33 ,
867- .reg_byte = 4 ,
868873 .target_desc = TARGET_RV32 ,
869874 },
870875 "127.0.0.1:1234" )) {
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