5b213178e7
The X3 (aka GP) register will potentially be loaded with the __global_pointer$ symbol during program start up (usually by the dynamic linker). As such, non-Go code may depend on the contents of GP and calculate offsets based on it, including code called via cgo and signal handlers installed by non-Go code. As such, stop using the X3 register so that there are fewer issues interacting between Go and non-Go code. While here remove the X4 (TP) name from the assembler such that any references must use the 'TP' name. This should reduce the likelihood of accidental use (like we do for the 'g' register). The same applies for X3 (GP) when the -shared flag is given. Updates #47100 Change-Id: I72e82b5ca3f80c46a781781345ca0432a4111b74 Reviewed-on: https://go-review.googlesource.com/c/go/+/351859 Trust: Joel Sing <joel@sing.id.au> Run-TryBot: Joel Sing <joel@sing.id.au> Reviewed-by: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> |
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