On 02/13/2014 10:52 AM, Sebastian Huber wrote: > The LEON3 processor has support for the CASA instruction which is > normally only available for SPARC V9 processors. Binutils 2.24 > and GCC 4.9 will support this instruction for LEON3. GCC uses it to > generate C11 atomic operations. > > The CAS synthetic instruction uses an ASI of 0x80. If TARGET_SPARC64 is > not defined use a supervisor data load/store for an ASI of 0x80 in > helper_ld_asi()/helper_st_asi(). >
Hello Sebastian, If I understand correctly, the difference with V1 is that ASI 0x80. Why did you chose Supervisor data access against User data access? (I cannot find documentation about 0x80 ASI) Thanks,
