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UNRATIFIED RISC-V: Add 'Zihintntl' extension
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[DO NOT MERGE]
Until 'Zihintntl' extension is ratified and final version number is
determined, this patch should not merged upstream.  This commit uses
unratified version 0.2 as in documentation (instead of possible 1.0
after ratification).

This commit adds 'Zihintntl' extension and its hint instructions.

bfd/ChangeLog:

	* elfxx-riscv.c (riscv_supported_std_z_ext): Add 'Zihintntl'
	standard hint 'Z' extension. (riscv_multi_subset_supports): Add
	handling for new instruction classes.

include/ChangeLog:

	* opcode/riscv.h (enum riscv_insn_class): Add new instruction
	classes: INSN_CLASS_ZIHINTNTL and INSN_CLASS_ZIHINTNTL_AND_C.
	(MASK_NTL_P1, MATCH_NTL_P1, MASK_NTL_PALL,
	MATCH_NTL_PALL, MASK_NTL_S1, MATCH_NTL_S1, MASK_NTL_ALL,
	MATCH_NTL_ALL, MASK_C_NTL_P1, MATCH_C_NTL_P1, MASK_C_NTL_PALL,
	MATCH_C_NTL_PALL, MASK_C_NTL_S1, MATCH_C_NTL_S1, MASK_C_NTL_ALL,
	MATCH_C_NTL_ALL): New macros.

opcodes/ChangeLog:

	* riscv-opc.c (riscv_opcodes): Add non-temporal locality hint
	instructions and aliases.
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@a4lg
a4lg committed Aug 11, 2022
1 parent 906dca1 commit 3ff9dbb
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16 changes: 16 additions & 0 deletions bfd/elfxx-riscv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1159,6 +1159,7 @@ static struct riscv_supported_ext riscv_supported_std_z_ext[] =
{"zicsr", ISA_SPEC_CLASS_20190608, 2, 0, 0 },
{"zifencei", ISA_SPEC_CLASS_20191213, 2, 0, 0 },
{"zifencei", ISA_SPEC_CLASS_20190608, 2, 0, 0 },
{"zihintntl", ISA_SPEC_CLASS_DRAFT, 0, 2, 0 },
{"zihintpause", ISA_SPEC_CLASS_DRAFT, 2, 0, 0 },
{"zfh", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"zfhmin", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
Expand Down Expand Up @@ -2283,6 +2284,11 @@ riscv_multi_subset_supports (riscv_parse_subset_t *rps,
return riscv_subset_supports (rps, "zicsr");
case INSN_CLASS_ZIFENCEI:
return riscv_subset_supports (rps, "zifencei");
case INSN_CLASS_ZIHINTNTL:
return riscv_subset_supports (rps, "zihintntl");
case INSN_CLASS_ZIHINTNTL_AND_C:
return (riscv_subset_supports (rps, "zihintntl")
&& riscv_subset_supports (rps, "c"));
case INSN_CLASS_ZIHINTPAUSE:
return riscv_subset_supports (rps, "zihintpause");
case INSN_CLASS_M:
Expand Down Expand Up @@ -2398,6 +2404,16 @@ riscv_multi_subset_supports_ext (riscv_parse_subset_t *rps,
return "zicsr";
case INSN_CLASS_ZIFENCEI:
return "zifencei";
case INSN_CLASS_ZIHINTNTL:
return "zihintntl";
case INSN_CLASS_ZIHINTNTL_AND_C:
if (!riscv_subset_supports (rps, "zihintntl")
&& !riscv_subset_supports (rps, "c"))
return _("zihintntl' and `c");
else if (!riscv_subset_supports (rps, "zihintntl"))
return "zihintntl";
else
return "c";
case INSN_CLASS_ZIHINTPAUSE:
return "zihintpause";
case INSN_CLASS_M:
Expand Down
17 changes: 17 additions & 0 deletions include/opcode/riscv-opc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2113,6 +2113,23 @@
#define MASK_CBO_INVAL 0xfff07fff
#define MATCH_CBO_ZERO 0x40200f
#define MASK_CBO_ZERO 0xfff07fff
/* Zihintntl hint instructions */
#define MATCH_NTL_P1 0x200033
#define MASK_NTL_P1 0xffffffff
#define MATCH_NTL_PALL 0x300033
#define MASK_NTL_PALL 0xffffffff
#define MATCH_NTL_S1 0x400033
#define MASK_NTL_S1 0xffffffff
#define MATCH_NTL_ALL 0x500033
#define MASK_NTL_ALL 0xffffffff
#define MATCH_C_NTL_P1 0x900a
#define MASK_C_NTL_P1 0xffff
#define MATCH_C_NTL_PALL 0x900e
#define MASK_C_NTL_PALL 0xffff
#define MATCH_C_NTL_S1 0x9012
#define MASK_C_NTL_S1 0xffff
#define MATCH_C_NTL_ALL 0x9016
#define MASK_C_NTL_ALL 0xffff
/* Unprivileged Counter/Timers CSR addresses. */
#define CSR_CYCLE 0xc00
#define CSR_TIME 0xc01
Expand Down
2 changes: 2 additions & 0 deletions include/opcode/riscv.h
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Original file line number Diff line number Diff line change
Expand Up @@ -366,6 +366,8 @@ enum riscv_insn_class
INSN_CLASS_D_AND_C,
INSN_CLASS_ZICSR,
INSN_CLASS_ZIFENCEI,
INSN_CLASS_ZIHINTNTL,
INSN_CLASS_ZIHINTNTL_AND_C,
INSN_CLASS_ZIHINTPAUSE,
INSN_CLASS_F_OR_ZFINX,
INSN_CLASS_D_OR_ZDINX,
Expand Down
12 changes: 12 additions & 0 deletions opcodes/riscv-opc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -344,6 +344,14 @@ const struct riscv_opcode riscv_opcodes[] =
{"addi", 0, INSN_CLASS_C, "d,Cz,Co", MATCH_C_LI, MASK_C_LI, match_rd_nonzero, INSN_ALIAS },
{"addi", 0, INSN_CLASS_C, "d,CV,z", MATCH_C_MV, MASK_C_MV, match_c_add, INSN_ALIAS },
{"addi", 0, INSN_CLASS_I, "d,s,j", MATCH_ADDI, MASK_ADDI, match_opcode, 0 },
{"ntl.p1", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_P1, MASK_C_NTL_P1, match_opcode, INSN_ALIAS },
{"ntl.p1", 0, INSN_CLASS_ZIHINTNTL, "", MATCH_NTL_P1, MASK_NTL_P1, match_opcode, 0 },
{"ntl.pall", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_PALL, MASK_C_NTL_PALL, match_opcode, INSN_ALIAS },
{"ntl.pall", 0, INSN_CLASS_ZIHINTNTL, "", MATCH_NTL_PALL, MASK_NTL_PALL, match_opcode, 0 },
{"ntl.s1", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_S1, MASK_C_NTL_S1, match_opcode, INSN_ALIAS },
{"ntl.s1", 0, INSN_CLASS_ZIHINTNTL, "", MATCH_NTL_S1, MASK_NTL_S1, match_opcode, 0 },
{"ntl.all", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_ALL, MASK_C_NTL_ALL, match_opcode, INSN_ALIAS },
{"ntl.all", 0, INSN_CLASS_ZIHINTNTL, "", MATCH_NTL_ALL, MASK_NTL_ALL, match_opcode, 0 },
{"add", 0, INSN_CLASS_C, "d,CU,CV", MATCH_C_ADD, MASK_C_ADD, match_c_add, INSN_ALIAS },
{"add", 0, INSN_CLASS_C, "d,CV,CU", MATCH_C_ADD, MASK_C_ADD, match_c_add, INSN_ALIAS },
{"add", 0, INSN_CLASS_C, "d,CU,Co", MATCH_C_ADDI, MASK_C_ADDI, match_rd_nonzero, INSN_ALIAS },
Expand Down Expand Up @@ -855,6 +863,10 @@ const struct riscv_opcode riscv_opcodes[] =
{"c.addi4spn", 0, INSN_CLASS_C, "Ct,Cc,CK", MATCH_C_ADDI4SPN, MASK_C_ADDI4SPN, match_c_addi4spn, 0 },
{"c.addi16sp", 0, INSN_CLASS_C, "Cc,CL", MATCH_C_ADDI16SP, MASK_C_ADDI16SP, match_c_addi16sp, 0 },
{"c.addi", 0, INSN_CLASS_C, "d,Co", MATCH_C_ADDI, MASK_C_ADDI, match_opcode, 0 },
{"c.ntl.p1", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_P1, MASK_C_NTL_P1, match_opcode, 0 },
{"c.ntl.pall", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_PALL, MASK_C_NTL_PALL, match_opcode, 0 },
{"c.ntl.s1", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_S1, MASK_C_NTL_S1, match_opcode, 0 },
{"c.ntl.all", 0, INSN_CLASS_ZIHINTNTL_AND_C, "", MATCH_C_NTL_ALL, MASK_C_NTL_ALL, match_opcode, 0 },
{"c.add", 0, INSN_CLASS_C, "d,CV", MATCH_C_ADD, MASK_C_ADD, match_c_add_with_hint, 0 },
{"c.sub", 0, INSN_CLASS_C, "Cs,Ct", MATCH_C_SUB, MASK_C_SUB, match_opcode, 0 },
{"c.and", 0, INSN_CLASS_C, "Cs,Ct", MATCH_C_AND, MASK_C_AND, match_opcode, 0 },
Expand Down

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