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path: root/src/runtime/preempt_mips64x.s
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2021-05-13all: add //go:build lines to assembly filesTobias Klauser
Don't add them to files in vendor and cmd/vendor though. These will be pulled in by updating the respective dependencies. For #41184 Change-Id: Icc57458c9b3033c347124323f33084c85b224c70 Reviewed-on: https://go-review.googlesource.com/c/go/+/319389 Trust: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
2020-10-30reflect,runtime: use internal ABI for selected ASM routines, attempt 2Than McIntosh
[This is a roll-forward of CL 262319, with a fix for some Darwin test failures]. Change the definitions of selected runtime assembly routines from ABI0 (the default) to ABIInternal. The ABIInternal def is intended to indicate that these functions don't follow the existing Go runtime ABI. In addition, convert the assembly reference to runtime.main (from runtime.mainPC) to ABIInternal. Finally, for functions such as "runtime.duffzero" that are called directly from generated code, make sure that the compiler looks up the correct ABI version. This is intended to support the register abi work, however these changes should not have any issues even when GOEXPERIMENT=regabi is not in effect. Updates #27539, #40724. Change-Id: Idf507f1c06176073563845239e1a54dad51a9ea9 Reviewed-on: https://go-review.googlesource.com/c/go/+/266638 Trust: Than McIntosh <thanm@google.com> Run-TryBot: Than McIntosh <thanm@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org>
2020-10-29Revert "reflect,runtime: use internal ABI for selected ASM routines"Than McIntosh
This reverts commit 50af50d136551e2009b2b52e829570536271cdaa. Reason for revert: Causes failures in the runtime package test on Darwin, apparently. Change-Id: I006bc1b3443fa7207e92fb4a93e3fb438d4d3de3 Reviewed-on: https://go-review.googlesource.com/c/go/+/266257 Trust: Than McIntosh <thanm@google.com> Run-TryBot: Than McIntosh <thanm@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-10-29reflect,runtime: use internal ABI for selected ASM routinesThan McIntosh
Change the definitions of selected runtime assembly routines from ABI0 (the default) to ABIInternal. The ABIInternal def is intended to indicate that these functions don't follow the existing Go runtime ABI. In addition, convert the assembly reference to runtime.main (from runtime.mainPC) to ABIInternal. Finally, for functions such as "runtime.duffzero" that are called directly from generated code, make sure that the compiler looks up the correct ABI version. This is intended to support the register abi work, however these changes should not have any issues even when GOEXPERIMENT=regabi is not in effect. Updates #27539, #40724. Change-Id: I9846f8dcaccc95718cf2e61a18b7e924a0677e4c Reviewed-on: https://go-review.googlesource.com/c/go/+/262319 Run-TryBot: Than McIntosh <thanm@google.com> TryBot-Result: Go Bot <gobot@golang.org> Trust: Than McIntosh <thanm@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-03-04runtime: don't save/restore FP registers in softfloat mode on MIPS(64)Cherry Zhang
Fixes #37653. Change-Id: I6188e44b4bc4aba7b56f29d9ce9de4618c70fd7b Reviewed-on: https://go-review.googlesource.com/c/go/+/222057 Run-TryBot: Cherry Zhang <cherryyz@google.com> Reviewed-by: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-11-07runtime: add async preemption support on MIPS and MIPS64Cherry Zhang
This CL adds support of call injection and async preemption on MIPS and MIPS64. Like ARM64, we need to clobber one register (REGTMP) for returning from the injected call. Previous CLs have marked code sequences that use REGTMP async-nonpreemtible. It seems on MIPS/MIPS64, a CALL instruction is not "atomic" (!). If a signal is delivered right at the CALL instruction, we may see an updated LR with a not-yet-updated PC. In some cases this may lead to failed stack unwinding. Don't preempt in this case. Change-Id: I99437b2d05869ded5c0c8cb55265dbfc933aedab Reviewed-on: https://go-review.googlesource.com/c/go/+/203720 Reviewed-by: Keith Randall <khr@golang.org>
2019-11-02runtime: asynchronous preemption function for x86Austin Clements
This adds asynchronous preemption function for amd64 and 386. These functions spill and restore all register state that can be used by user Go code. For the moment we stub out the other arches. For #10958, #24543. Change-Id: I6f93fabe9875f4834922a5712362e79045c00aca Reviewed-on: https://go-review.googlesource.com/c/go/+/201759 Run-TryBot: Austin Clements <austin@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com>
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