From 01804a098dea7d08857eee82bcaad04676dd8ea1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christoph=20M=C3=BCllner?= Date: Sun, 13 Nov 2022 16:59:21 +0100 Subject: RISC-V: Add T-Head Int vendor extension MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds the XTheadInt extension, which provides interrupt stack management instructions. The XTheadFmv extension is documented in the RISC-V toolchain contentions: https://github.com/riscv-non-isa/riscv-toolchain-conventions Co-developed-by: Lifang Xia Signed-off-by: Christoph Müllner --- bfd/elfxx-riscv.c | 5 +++++ gas/NEWS | 2 +- gas/doc/c-riscv.texi | 5 +++++ gas/testsuite/gas/riscv/x-thead-int.d | 11 +++++++++++ gas/testsuite/gas/riscv/x-thead-int.s | 3 +++ include/opcode/riscv-opc.h | 8 ++++++++ include/opcode/riscv.h | 1 + opcodes/riscv-opc.c | 4 ++++ 8 files changed, 38 insertions(+), 1 deletion(-) create mode 100644 gas/testsuite/gas/riscv/x-thead-int.d create mode 100644 gas/testsuite/gas/riscv/x-thead-int.s diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c index a1e4206..cfec9a6 100644 --- a/bfd/elfxx-riscv.c +++ b/bfd/elfxx-riscv.c @@ -1240,6 +1240,7 @@ static struct riscv_supported_ext riscv_supported_vendor_x_ext[] = {"xtheadcondmov", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 }, {"xtheadfmemidx", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 }, {"xtheadfmv", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 }, + {"xtheadint", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 }, {"xtheadmac", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 }, {"xtheadmemidx", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 }, {"xtheadmempair", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 }, @@ -2422,6 +2423,8 @@ riscv_multi_subset_supports (riscv_parse_subset_t *rps, return riscv_subset_supports (rps, "xtheadfmemidx"); case INSN_CLASS_XTHEADFMV: return riscv_subset_supports (rps, "xtheadfmv"); + case INSN_CLASS_XTHEADINT: + return riscv_subset_supports (rps, "xtheadint"); case INSN_CLASS_XTHEADMAC: return riscv_subset_supports (rps, "xtheadmac"); case INSN_CLASS_XTHEADMEMIDX: @@ -2578,6 +2581,8 @@ riscv_multi_subset_supports_ext (riscv_parse_subset_t *rps, return "xtheadfmemidx"; case INSN_CLASS_XTHEADFMV: return "xtheadfmv"; + case INSN_CLASS_XTHEADINT: + return "xtheadint"; case INSN_CLASS_XTHEADMAC: return "xtheadmac"; case INSN_CLASS_XTHEADMEMIDX: diff --git a/gas/NEWS b/gas/NEWS index ff0a25d..8ddd38a 100644 --- a/gas/NEWS +++ b/gas/NEWS @@ -26,7 +26,7 @@ for --enable-compressed-debug-sections. * Add support for various T-Head extensions (XTheadBa, XTheadBb, XTheadBs, - XTheadCmo, XTheadCondMov, XTheadFMemIdx, XTheadFmv, XTheadMemIdx, + XTheadCmo, XTheadCondMov, XTheadFMemIdx, XTheadFmv, XTheadInt, XTheadMemIdx, XTheadMemPair, XTheadMac, and XTheadSync) from version 2.0 of the T-Head ISA manual, which are implemented in the Allwinner D1. diff --git a/gas/doc/c-riscv.texi b/gas/doc/c-riscv.texi index f2a69d8..d61e8e47 100644 --- a/gas/doc/c-riscv.texi +++ b/gas/doc/c-riscv.texi @@ -739,6 +739,11 @@ The XTheadFmv extension provides access to the upper 32 bits of a doulbe-precisi It is documented in @url{https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.1.0/xthead-2022-11-07-2.1.0.pdf}. +@item XTheadInt +The XTheadInt extension provides access to ISR stack management instructions. + +It is documented in @url{https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.1.0/xthead-2022-11-07-2.1.0.pdf}. + @item XTheadMac The XTheadMac extension provides multiply-accumulate instructions. diff --git a/gas/testsuite/gas/riscv/x-thead-int.d b/gas/testsuite/gas/riscv/x-thead-int.d new file mode 100644 index 0000000..23a82a2 --- /dev/null +++ b/gas/testsuite/gas/riscv/x-thead-int.d @@ -0,0 +1,11 @@ +#as: -march=rv32i_xtheadint +#source: x-thead-int.s +#objdump: -dr + +.*:[ ]+file format .* + +Disassembly of section .text: + +0+000 : +[ ]+[0-9a-f]+:[ ]+0040000b[ ]+th.ipush +[ ]+[0-9a-f]+:[ ]+0050000b[ ]+th.ipop diff --git a/gas/testsuite/gas/riscv/x-thead-int.s b/gas/testsuite/gas/riscv/x-thead-int.s new file mode 100644 index 0000000..23d8674 --- /dev/null +++ b/gas/testsuite/gas/riscv/x-thead-int.s @@ -0,0 +1,3 @@ +target: + th.ipush + th.ipop diff --git a/include/opcode/riscv-opc.h b/include/opcode/riscv-opc.h index d7d9dbc..f36b06d 100644 --- a/include/opcode/riscv-opc.h +++ b/include/opcode/riscv-opc.h @@ -2213,6 +2213,11 @@ #define MASK_TH_FMV_HW_X 0xfff0707f #define MATCH_TH_FMV_X_HW 0x5000100b #define MASK_TH_FMV_X_HW 0xfff0707f +/* Vendor-specific (T-Head) XTheadInt instructions. */ +#define MATCH_TH_IPOP 0x0050000b +#define MASK_TH_IPOP 0xffffffff +#define MATCH_TH_IPUSH 0x0040000b +#define MASK_TH_IPUSH 0xffffffff /* Vendor-specific (T-Head) XTheadMac instructions. */ #define MATCH_TH_MULA 0x2000100b #define MASK_TH_MULA 0xfe00707f @@ -3130,6 +3135,9 @@ DECLARE_INSN(th_fsurw, MATCH_TH_FSURW, MASK_TH_FSURW) /* Vendor-specific (T-Head) XTheadFmv instructions. */ DECLARE_INSN(th_fmv_hw_x, MATCH_TH_FMV_HW_X, MASK_TH_FMV_HW_X) DECLARE_INSN(th_fmv_x_hw, MATCH_TH_FMV_X_HW, MASK_TH_FMV_X_HW) +/* Vendor-specific (T-Head) XTheadInt instructions. */ +DECLARE_INSN(th_ipop, MATCH_TH_IPOP, MASK_TH_IPOP) +DECLARE_INSN(th_ipush, MATCH_TH_IPUSH, MASK_TH_IPUSH) /* Vendor-specific (T-Head) XTheadMac instructions. */ DECLARE_INSN(th_mula, MATCH_TH_MULA, MASK_TH_MULA) DECLARE_INSN(th_mulah, MATCH_TH_MULAH, MASK_TH_MULAH) diff --git a/include/opcode/riscv.h b/include/opcode/riscv.h index f90cf97..c3cbde6 100644 --- a/include/opcode/riscv.h +++ b/include/opcode/riscv.h @@ -417,6 +417,7 @@ enum riscv_insn_class INSN_CLASS_XTHEADCONDMOV, INSN_CLASS_XTHEADFMEMIDX, INSN_CLASS_XTHEADFMV, + INSN_CLASS_XTHEADINT, INSN_CLASS_XTHEADMAC, INSN_CLASS_XTHEADMEMIDX, INSN_CLASS_XTHEADMEMPAIR, diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c index dfd508b..0e69154 100644 --- a/opcodes/riscv-opc.c +++ b/opcodes/riscv-opc.c @@ -1935,6 +1935,10 @@ const struct riscv_opcode riscv_opcodes[] = {"th.fmv.hw.x", 32, INSN_CLASS_XTHEADFMV, "d,S", MATCH_TH_FMV_HW_X, MASK_TH_FMV_HW_X, match_opcode, 0}, {"th.fmv.x.hw", 32, INSN_CLASS_XTHEADFMV, "d,S", MATCH_TH_FMV_X_HW, MASK_TH_FMV_X_HW, match_opcode, 0}, +/* Vendor-specific (T-Head) XTheadInt instructions. */ +{"th.ipop", 0, INSN_CLASS_XTHEADINT, "", MATCH_TH_IPOP, MASK_TH_IPOP, match_opcode, 0}, +{"th.ipush", 0, INSN_CLASS_XTHEADINT, "", MATCH_TH_IPUSH, MASK_TH_IPUSH, match_opcode, 0}, + /* Vendor-specific (T-Head) XTheadMemIdx instructions. */ {"th.ldia", 64, INSN_CLASS_XTHEADMEMIDX, "d,(s),Xs5@20,Xu2@25", MATCH_TH_LDIA, MASK_TH_LDIA, match_th_load_inc, 0}, {"th.ldib", 64, INSN_CLASS_XTHEADMEMIDX, "d,(s),Xs5@20,Xu2@25", MATCH_TH_LDIB, MASK_TH_LDIB, match_th_load_inc, 0}, -- cgit v1.1