41 lines
No EOL
1.1 KiB
Go
41 lines
No EOL
1.1 KiB
Go
package arm
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// Jump continues program flow at the new offset.
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func Jump(offset int) uint32 {
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return 0b000101<<26 | uint32(offset&mask26)
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}
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// JumpIfEqual jumps if the result was equal.
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func JumpIfEqual(offset int) uint32 {
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return branchCond(EQ, offset)
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}
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// JumpIfNotEqual jumps if the result was not equal.
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func JumpIfNotEqual(offset int) uint32 {
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return branchCond(NE, offset)
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}
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// JumpIfGreater jumps if the result was greater.
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func JumpIfGreater(offset int) uint32 {
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return branchCond(GT, offset)
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}
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// JumpIfGreaterOrEqual jumps if the result was greater or equal.
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func JumpIfGreaterOrEqual(offset int) uint32 {
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return branchCond(GE, offset)
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}
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// JumpIfLess jumps if the result was less.
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func JumpIfLess(offset int) uint32 {
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return branchCond(LS, offset)
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}
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// JumpIfLessOrEqual jumps if the result was less or equal.
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func JumpIfLessOrEqual(offset int) uint32 {
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return branchCond(LE, offset)
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}
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// branchCond performs a conditional branch to a PC-relative offset.
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func branchCond(cond condition, imm19 int) uint32 {
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return 0b01010100<<24 | uint32(imm19&mask19)<<5 | uint32(cond)
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} |