================
@@ -100,6 +100,25 @@ bool
ArchitectureAArch64::ReconfigureRegisterInfo(DynamicRegisterInfo ®_info,
if (reg_value != fail_value && reg_value <= 32)
svg_reg_value = reg_value;
}
+ if (!svg_reg_value) {
+ const RegisterInfo *darwin_svg_reg_info = reg_info.GetRegisterInfo("svl");
+ if (darwin_svg_reg_info) {
+ uint32_t svg_reg_num = darwin_svg_reg_info->kinds[eRegisterKindLLDB];
+ uint64_t reg_value =
+ reg_context.ReadRegisterAsUnsigned(svg_reg_num, fail_value);
+ // UpdateARM64SVERegistersInfos and UpdateARM64SMERegistersInfos
+ // expect the number of 8-byte granules; darwin provides number of
+ // bytes.
+ if (reg_value != fail_value && reg_value <= 256) {
+ svg_reg_value = reg_value / 8;
+ // Apple hardware only implements Streaming SVE mode, so
+ // the non-streaming Vector Length is not reported by the
+ // kernel. Set both svg and vg to this svl value.
+ if (!vg_reg_value)
+ vg_reg_value = reg_value / 8;
----------------
JDevlieghere wrote:
Nit: lots of magic values here but in all fairness that's consistent with the
surrounding code. The comment covers the 8 byte granule so I'm not too
concerned, though some constants might make this easier to read.
https://github.com/llvm/llvm-project/pull/119171
_______________________________________________
lldb-commits mailing list
lldb-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
