13 lines
579 B
Go
13 lines
579 B
Go
package arm
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import "git.urbach.dev/cli/q/src/cpu"
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// LoadPair calculates an address from a base register value and an immediate offset,
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// loads two 64-bit doublewords from memory, and writes them to two registers.
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// This is the post-index version of the instruction so the offset is applied to the base register after the memory access.
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func LoadPair(reg1 cpu.Register, reg2 cpu.Register, base cpu.Register, offset int) uint32 {
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offset /= 8
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offset &= 0b1111111
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return 0b1010100011<<22 | (uint32(offset) << 15) | (uint32(reg2) << 10) | (uint32(base) << 5) | uint32(reg1)
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}
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