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Christoph Müllner 27cfd142d0 RISC-V: Add T-Head MemIdx vendor extension
T-Head has a range of vendor-specific instructions.
Therefore it makes sense to group them into smaller chunks
in form of vendor extensions.

This patch adds the XTheadMemIdx extension, a collection of T-Head specific
GPR memory access instructions.
The 'th' prefix and the "XTheadMemIdx" extension are documented in a PR
for the RISC-V toolchain conventions ([1]).

In total XTheadCmo introduces the following 44 instructions
(BU,HU,WU only for loads (zero-extend instead of sign-extend)):

* {L,S}{D,W,WU,H,HU,B,BU}{IA,IB} rd, rs1, imm5, imm2
* {L,S}R{D,W,WU,H,HU,B,BU} rd, rs1, rs2, imm2
* {L,S}UR{D,W,WU,H,HU,B,BU} rd, rs1, rs2, imm2

[1] https://github.com/riscv-non-isa/riscv-toolchain-conventions/pull/19

Co-developed-by: Lifang Xia <lifang_xia@linux.alibaba.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
2022-09-22 18:06:09 +02:00
bfd RISC-V: Add T-Head MemIdx vendor extension 2022-09-22 18:06:09 +02:00
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gdb [gdb/symtab] Add all_comp_units/all_type_units views on all_units 2022-09-22 14:50:27 +02:00
gdbserver gdbsupport: move include/gdb/fileio.h contents to fileio.h 2022-09-21 14:11:03 -04:00
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