diff options
Diffstat (limited to 'src/cmd/internal/obj/link.go')
| -rw-r--r-- | src/cmd/internal/obj/link.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/cmd/internal/obj/link.go b/src/cmd/internal/obj/link.go index b6861f4c1e..3c66eecbf0 100644 --- a/src/cmd/internal/obj/link.go +++ b/src/cmd/internal/obj/link.go @@ -112,13 +112,17 @@ import ( // val = int32(y) // // reg<<shift, reg>>shift, reg->shift, reg@>shift -// Shifted register value, for ARM. +// Shifted register value, for ARM and ARM64. // In this form, reg must be a register and shift can be a register or an integer constant. // Encoding: // type = TYPE_SHIFT +// On ARM: // offset = (reg&15) | shifttype<<5 | count // shifttype = 0, 1, 2, 3 for <<, >>, ->, @> // count = (reg&15)<<8 | 1<<4 for a register shift count, (n&31)<<7 for an integer constant. +// On ARM64: +// offset = (reg&31)<<16 | shifttype<<22 | (count&63)<<10 +// shifttype = 0, 1, 2 for <<, >>, -> // // (reg, reg) // A destination register pair. When used as the last argument of an instruction, |