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Extension: Smcsrind and Sscsrind #125

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Extension: Smcsrind and Sscsrind #125

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@a4lg a4lg commented Aug 8, 2023

@a4lg a4lg added the enhancement New feature or request label Aug 8, 2023
@a4lg a4lg force-pushed the riscv-smcsrind-sscsrind branch 3 times, most recently from a85e8f9 to f91fa2f Compare August 15, 2023 06:37
@a4lg a4lg force-pushed the riscv-smcsrind-sscsrind branch 2 times, most recently from f15c64c to 16eb8bc Compare August 21, 2023 07:26
@a4lg a4lg changed the title Draft Extension: Smcsrind and Sscsrind Extension: Smcsrind and Sscsrind Aug 21, 2023
@a4lg a4lg force-pushed the riscv-smcsrind-sscsrind branch 6 times, most recently from 3837b09 to 5967639 Compare September 7, 2023 09:35
@a4lg a4lg force-pushed the riscv-smcsrind-sscsrind branch 2 times, most recently from 206eb3b to 17f23c1 Compare October 19, 2023 03:17
a4lg added 3 commits October 19, 2023 06:58
@a4lg
RISC-V: Add complex CSR error handling
49a69b2 
This commit adds template for complex CSR error handling (such like
multiple extensions involved).

gas/ChangeLog:

	* config/tc-riscv.c (riscv_csr_address): Add complex CSR error
	handling.
@a4lg
RISC-V: Add indirect CSR Access Extensions and their CSRs
9efcb82 
This commit adds indirect CSR access extensions (Smcsrind / Sscsrind) and
their CSRs based on the latest documentation (version 1.0.0-rc2).
<https://github.com/riscv/riscv-indirect-csr-access/releases/tag/v1.0.0-rc2>

Because six CSRs are duplicates of 'Smaia' / 'Ssaia' extensions, it adds
complex CSR handling for those.

bfd/ChangeLog:

	* elfxx-riscv.c (riscv_implicit_subsets): Add implications
	'Smcsrind' / 'Sscsrind' -> 'Zicsr'.
	(riscv_supported_std_s_ext): Add 'Smcsrind' and 'Sscsrind'
	extensions to the valid 'S' extension list.

gas/ChangeLog:

	* config/tc-riscv.c (enum riscv_csr_class): Add CSR classes for
	the 'S[ms]csrind' extensions. (riscv_csr_address): Add handling for
	new CSR classes.
	* testsuite/gas/riscv/csr-dw-regnums.s: Add new CSRs.
	* testsuite/gas/riscv/csr-dw-regnums.d: Likewise.
	* testsuite/gas/riscv/csr.s: Add new CSRs.
	* testsuite/gas/riscv/csr-version-1p9p1.d: Likewise.
	* testsuite/gas/riscv/csr-version-1p10.d: Likewise.
	* testsuite/gas/riscv/csr-version-1p11.d: Likewise.
	* testsuite/gas/riscv/csr-version-1p12.d: Likewise.
	* testsuite/gas/riscv/csr-version-1p9p1.l: Likewise but also change
	the expected error message to reflect 'S[ms]csrind' extensions.
	* testsuite/gas/riscv/csr-version-1p10.l: Ditto.
	* testsuite/gas/riscv/csr-version-1p11.l: Ditto.
	* testsuite/gas/riscv/csr-version-1p12.l: Ditto.

include/ChangeLog:

	* opcode/riscv-opc.h: Recategory miselect, mireg, siselect, sireg,
	vsiselect and vsireg CSRs. (CSR_MIREG2, CSR_MIREG3, CSR_MIREG4,
	CSR_MIREG5, CSR_MIREG6, CSR_SIREG2, CSR_SIREG3, CSR_SIREG4,
	CSR_SIREG5, CSR_SIREG6, CSR_VSIREG2, CSR_VSIREG3, CSR_VSIREG3,
	CSR_VSIREG5, CSR_VSIREG6): Add new.
@a4lg
RISC-V: Test cases for complex CSR checking
3b3d2a5 
This commit tests whether the miselect CSR is unlocked by either
'Smaia' or 'Smcsrind' extension.

gas/ChangeLog:

	* testsuite/gas/riscv/csr-complex.s: New test.
	* testsuite/gas/riscv/csr-complex-1.d: Likewise.
	* testsuite/gas/riscv/csr-complex-1.l: Likewise.
	* testsuite/gas/riscv/csr-complex-2.d: Likewise.
	* testsuite/gas/riscv/csr-complex-3.d: Likewise.
@a4lg a4lg force-pushed the riscv-smcsrind-sscsrind branch from 17f23c1 to 3b3d2a5 Compare October 19, 2023 07:01
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