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Hi,This patch adds support for the trace unit registers to the AArch64 gas and libopcodes.
There are 210 registers added; those registers are described in the section 7.1 Register summary of "ARM Embedded Trace Macrocell Architecture Specification ETMv4" (https://silver.arm.com/download/ARM_and_AMBA_Architecture/AR053-DA-75005-r0p0-00rel0/IHI0064B_etm_v4_architecture_spec.pdf).
OK to for the mainline and 2_24 branch? Thanks, Yufeng gas/ * config/tc-aarch64.c (set_other_error): New function. (parse_sys_reg): Add new parameter 'sys_reg' and if non-NULL set the variable to which it points with 'o'. (parse_operands): Update; check for write to read-only system registers or read from write-only ones. gas/testsuite/ * gas/aarch64/diagnostic.s: Add tests. * gas/aarch64/diagnostic.l: Update. * gas/aarch64/tracereg-illegal.d: New file. * gas/aarch64/tracereg-illegal.l: Ditto * gas/aarch64/tracereg-illegal.s: Ditto * gas/aarch64/tracereg.d: Ditto * gas/aarch64/tracereg.s: Ditto include/opcode * aarch64.h (aarch64_sys_reg_readonly_p): New declaration. (aarch64_sys_reg_writeonly_p): Ditto. opcodes/ * aarch64-opc.c (CPENT): New define. (F_READONLY, F_WRITEONLY): Likewise. (aarch64_sys_regs): Add trace unit registers. (aarch64_sys_reg_readonly_p): New function. (aarch64_sys_reg_writeonly_p): Ditto.
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