7d4cca07d2
While debugging a recent regression it was discovered that the assembler for ppc64x was not always generating the correct instruction for DS form loads and stores. When an instruction is DS form then the offset must be a multiple of 4, and if it isn't then bits outside the offset field were being incorrectly set resulting in unexpected and incorrect instructions. This change adds a check to determine when the opcode is DS form and then verifies that the offset is a multiple of 4 before generating the instruction, otherwise logs an error. This also changes a few asm files that were using unaligned offsets for DS form loads and stores. In the runtime package these were instructions intended to cause a crash so using aligned or unaligned offsets doesn't change that behavior. Change-Id: Ie3a7e1e65dcc9933b54de7a46a054da8459cb56f Reviewed-on: https://go-review.googlesource.com/40476 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> |
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