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author | David Faust <david.faust@oracle.com> | 2020-09-18 09:56:43 -0700 |
---|---|---|
committer | David Faust <david.faust@oracle.com> | 2020-09-18 10:04:23 -0700 |
commit | 6e25f88828f500fc649aa6eac8b567c7b1e96c59 (patch) | |
tree | f2ee690ca5ba7bb36cb1c887a33daf76677311d7 /cpu/bpf.cpu | |
parent | e163628395d40485c3b379fa39bdc211ee19d40b (diff) | |
download | binutils-6e25f88828f500fc649aa6eac8b567c7b1e96c59.zip binutils-6e25f88828f500fc649aa6eac8b567c7b1e96c59.tar.gz binutils-6e25f88828f500fc649aa6eac8b567c7b1e96c59.tar.bz2 |
bpf: xBPF SDIV, SMOD instructions
Add gas and opcodes support for two xBPF-exclusive ALU operations:
SDIV (signed division) and SMOD (signed modulo), and add tests for
them in gas.
cpu/
* bpf.cpu (insn-op-code-alu): Add SDIV and SMOD.
(define-alu-insn-bin, daib): Take ISAs as an argument.
(define-alu-instructions): Update calls to daib pmacro with
ISAs; add sdiv and smod.
gas/
* testsuite/gas/bpf/alu-xbpf.d: New file.
* testsuite/gas/bpf/alu-xbpf.s: Likewise.
* testsuite/gas/bpf/alu32-xbpf.d: Likewise.
* testsuite/gas/bpf/alu32-xbpf.d: Likewise.
* testuiste/gas/bpf/bpf.exp: Run new tests.
opcodes/
* bpf-desc.c: Regenerate.
* bpf-desc.h: Likewise.
* bpf-opc.c: Likewise.
* bpf-opc.h: Likewise.
Diffstat (limited to 'cpu/bpf.cpu')
-rw-r--r-- | cpu/bpf.cpu | 38 |
1 files changed, 21 insertions, 17 deletions
diff --git a/cpu/bpf.cpu b/cpu/bpf.cpu index eb7bf5c..13dde70 100644 --- a/cpu/bpf.cpu +++ b/cpu/bpf.cpu @@ -249,6 +249,8 @@ (ADD #x0) (SUB #x1) (MUL #x2) (DIV #x3) (OR #x4) (AND #x5) (LSH #x6) (RSH #x7) (NEG #x8) (MOD #x9) (XOR #xa) (MOV #xb) (ARSH #xc) (END #xd) + ;; xBPF-only: signed div, signed mod + (SDIV #xe) (SMOD #xf) ;; Codes for OP_CLASS_JMP (JA #x0) (JEQ #x1) (JGT #x2) (JGE #x3) (JSET #x4) (JNE #x5) (JSGT #x6) (JSGE #x7) (CALL #x8) (EXIT #x9) @@ -420,12 +422,12 @@ ())) (define-pmacro (define-alu-insn-bin x-basename x-suffix x-op-class x-op-code - x-endian x-mode x-semop) + x-endian x-mode x-semop x-isas) (begin ;; dst = dst OP immediate (dni (.sym x-basename x-suffix "i" x-endian) (.str x-basename x-suffix " immediate") - (endian-isas x-endian) + (.splice (.unsplice x-isas)) (.str x-basename x-suffix " $dst" x-endian ",$imm32") (+ imm32 (f-offset16 0) ((.sym f-src x-endian) 0) (.sym dst x-endian) x-op-class OP_SRC_K x-op-code) @@ -434,7 +436,7 @@ ;; dst = dst OP src (dni (.sym x-basename x-suffix "r" x-endian) (.str x-basename x-suffix " register") - (endian-isas x-endian) + (.splice (.unsplice x-isas)) (.str x-basename x-suffix " $dst" x-endian ",$src" x-endian) (+ (f-imm32 0) (f-offset16 0) (.sym src x-endian) (.sym dst x-endian) x-op-class OP_SRC_X x-op-code) @@ -471,10 +473,10 @@ ;; Binary ALU instructions (all the others) ;; For ALU32: DST = (u32) DST OP (u32) SRC is correct semantics -(define-pmacro (daib x-basename x-op-code x-endian x-semop) +(define-pmacro (daib x-basename x-op-code x-endian x-semop x-isas) (begin - (define-alu-insn-bin x-basename "" OP_CLASS_ALU64 x-op-code x-endian DI x-semop) - (define-alu-insn-bin x-basename "32" OP_CLASS_ALU x-op-code x-endian USI x-semop))) + (define-alu-insn-bin x-basename "" OP_CLASS_ALU64 x-op-code x-endian DI x-semop x-isas) + (define-alu-insn-bin x-basename "32" OP_CLASS_ALU x-op-code x-endian USI x-semop x-isas))) ;; Move ALU instructions (mov) (define-pmacro (daim x-basename x-op-code x-endian) @@ -484,17 +486,19 @@ (define-pmacro (define-alu-instructions x-endian) (begin - (daib add OP_CODE_ADD x-endian add) - (daib sub OP_CODE_SUB x-endian sub) - (daib mul OP_CODE_MUL x-endian mul) - (daib div OP_CODE_DIV x-endian udiv) - (daib or OP_CODE_OR x-endian or) - (daib and OP_CODE_AND x-endian and) - (daib lsh OP_CODE_LSH x-endian sll) - (daib rsh OP_CODE_RSH x-endian srl) - (daib mod OP_CODE_MOD x-endian umod) - (daib xor OP_CODE_XOR x-endian xor) - (daib arsh OP_CODE_ARSH x-endian sra) + (daib add OP_CODE_ADD x-endian add (endian-isas x-endian)) + (daib sub OP_CODE_SUB x-endian sub (endian-isas x-endian)) + (daib mul OP_CODE_MUL x-endian mul (endian-isas x-endian)) + (daib div OP_CODE_DIV x-endian udiv (endian-isas x-endian)) + (daib or OP_CODE_OR x-endian or (endian-isas x-endian)) + (daib and OP_CODE_AND x-endian and (endian-isas x-endian)) + (daib lsh OP_CODE_LSH x-endian sll (endian-isas x-endian)) + (daib rsh OP_CODE_RSH x-endian srl (endian-isas x-endian)) + (daib mod OP_CODE_MOD x-endian umod (endian-isas x-endian)) + (daib xor OP_CODE_XOR x-endian xor (endian-isas x-endian)) + (daib arsh OP_CODE_ARSH x-endian sra (endian-isas x-endian)) + (daib sdiv OP_CODE_SDIV x-endian div ((ISA (.sym xbpf x-endian)))) + (daib smod OP_CODE_SMOD x-endian mod ((ISA (.sym xbpf x-endian)))) (daiu neg OP_CODE_NEG x-endian neg) (daim mov OP_CODE_MOV x-endian))) |