37 lines
1.5 KiB
ArmAsm
37 lines
1.5 KiB
ArmAsm
/*
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* Generic two-operand compare-and-branch operation. Provide a "revcmp"
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* fragment that specifies the *reverse* comparison to perform, e.g.
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* for "if-le" you would use "gt".
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*
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* For: if-eq, if-ne, if-lt, if-ge, if-gt, if-le
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*/
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/* if-cmp vA, vB, +CCCC */
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GET_OPA4(a0) # a0 <- A+
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GET_OPB(a1) # a1 <- B
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GET_VREG(a3, a1) # a3 <- vB
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GET_VREG(a2, a0) # a2 <- vA
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b${revcmp} a2, a3, 1f # branch to 1 if comparison failed
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FETCH_S(rINST, 1) # rINST<- branch offset, in code units
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b 2f
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1:
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li rINST, 2 # rINST- BYTE branch dist for not-taken
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2:
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#if MTERP_PROFILE_BRANCHES
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EXPORT_PC()
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move a0, rSELF
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addu a1, rFP, OFF_FP_SHADOWFRAME
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move a2, rINST
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JAL(MterpProfileBranch) # (self, shadow_frame, offset)
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bnez v0, MterpOnStackReplacement # Note: offset must be in rINST
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#endif
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addu a2, rINST, rINST # convert to bytes
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FETCH_ADVANCE_INST_RB(a2) # update rPC, load rINST
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bgez a2, .L_${opcode}_finish
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lw ra, THREAD_FLAGS_OFFSET(rSELF)
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b MterpCheckSuspendAndContinue
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%break
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.L_${opcode}_finish:
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GET_INST_OPCODE(t0) # extract opcode from rINST
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GOTO_OPCODE(t0) # jump to next instruction
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