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| author | Giuliano Belinassi <giuliano.belinassi@usp.br> | 2020-08-22 17:43:43 -0300 |
|---|---|---|
| committer | Giuliano Belinassi <giuliano.belinassi@usp.br> | 2020-08-22 17:43:43 -0300 |
| commit | a926878ddbd5a98b272c22171ce58663fc04c3e0 (patch) | |
| tree | 86af256e5d9a9c06263c00adc90e5fe348008c43 /libgo/go/runtime/mkpreempt.go | |
| parent | 542730f087133690b47e036dfd43eb0db8a650ce (diff) | |
| parent | 07cbaed8ba7d1b6e4ab3a9f44175502a4e1ecdb1 (diff) | |
| download | gcc-devel/autopar_devel.zip gcc-devel/autopar_devel.tar.gz gcc-devel/autopar_devel.tar.bz2 | |
Merge branch 'autopar_rebase2' into autopar_develdevel/autopar_devel
Quickly commit changes in the rebase branch.
Diffstat (limited to 'libgo/go/runtime/mkpreempt.go')
| -rw-r--r-- | libgo/go/runtime/mkpreempt.go | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/libgo/go/runtime/mkpreempt.go b/libgo/go/runtime/mkpreempt.go index 35ed428..1fe7766 100644 --- a/libgo/go/runtime/mkpreempt.go +++ b/libgo/go/runtime/mkpreempt.go @@ -502,8 +502,33 @@ func genPPC64() { } func genRISCV64() { - p("// No async preemption on riscv64 - see issue 36711") - p("UNDEF") + // X0 (zero), X1 (LR), X2 (SP), X4 (g), X31 (TMP) are special. + var l = layout{sp: "X2", stack: 8} + + // Add integer registers (X3, X5-X30). + for i := 3; i < 31; i++ { + if i == 4 { + continue + } + reg := fmt.Sprintf("X%d", i) + l.add("MOV", reg, 8) + } + + // Add floating point registers (F0-F31). + for i := 0; i <= 31; i++ { + reg := fmt.Sprintf("F%d", i) + l.add("MOVD", reg, 8) + } + + p("MOV X1, -%d(X2)", l.stack) + p("ADD $-%d, X2", l.stack) + l.save() + p("CALL ·asyncPreempt2(SB)") + l.restore() + p("MOV %d(X2), X1", l.stack) + p("MOV (X2), X31") + p("ADD $%d, X2", l.stack+8) + p("JMP (X31)") } func genS390X() { |