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[DO NOT MERGE]
Until the 'Ssqosid' extension is frozen/ratified and the final version
number is determined, this patch should not be merged upstream. This
commit uses version 0.1 as the placeholder, not version 0.0.0 in the latest
PDF documentation (since 0.0 is invalid).
This commit adds QoS registration interface for S-mode ('Ssqosid' extension)
support based on the specification:
<riscv-non-isa/riscv-cbqri@3e06bc5>
***Draft Note***
Because CSR addresse is not fixed yet, this commit uses tentative
addresse (a part of custom CSR space).
bfd/ChangeLog:
* elfxx-riscv.c (riscv_implicit_subsets): Add implications to
'Zicsr'. (riscv_supported_std_s_ext): Add 'Ssqosid' extension to
valid 'S' extension list.
gas/ChangeLog:
* config/tc-riscv.c (enum riscv_csr_class): Add CSR class for
the 'Ssqosid' extension. (riscv_csr_address): Add handling for
new CSR class.
* testsuite/gas/riscv/csr-dw-regnums.d: Add new CSR.
* testsuite/gas/riscv/csr-dw-regnums.s: Likewise.
* testsuite/gas/riscv/csr.s: Add new CSR.
* testsuite/gas/riscv/csr-version-1p9p1.d: Likewise.
* testsuite/gas/riscv/csr-version-1p9p1.l: Likewise.
* testsuite/gas/riscv/csr-version-1p10.d: Likewise.
* testsuite/gas/riscv/csr-version-1p10.l: Likewise.
* testsuite/gas/riscv/csr-version-1p11.d: Likewise.
* testsuite/gas/riscv/csr-version-1p11.l: Likewise.
* testsuite/gas/riscv/csr-version-1p12.d: Likewise.
* testsuite/gas/riscv/csr-version-1p12.l: Likewise.
include/ChangeLog:
* opcode/riscv-opc.h (CSR_SQOSCFG): New.
**DEVELOPMENT ENVIRONMENT ONLY**
The attached script can be used to replace related source files when
the CSR addresse of "sqoscfg" (now tentative) is determined.
Usage (when "sqoscfg" is allocated to 0x5ad):
./instantiate-ssqosid.sh 0x5ad
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Wiki Page (details): https://github.com/a4lg/binutils-gdb/wiki/riscv_ssqosid