mirror
/
go
mirror of https://github.com/golang/go.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

cmd/internal/obj: add prologue_end DWARF stmt for riscv64 

This patch adds prologue_end statement to the DWARF info for riscv64,
which delve debugger uses for skip stacksplit prologue.

Change-Id: I4e5d9c26202385f65b3118b16f53f66de9d327f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/620295
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Lin Runze 2024-10-15 15:18:08 +08:00 committed by Cherry Mui
parent e5e552b816
commit b45c7f1661
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/cmd/internal/obj/riscv/obj.go
View File

@ -23,6 +23,7 @@ package riscv
import (
"cmd/internal/obj"
"cmd/internal/objabi"
"cmd/internal/src"
"cmd/internal/sys"
"fmt"
"internal/abi"
@ -427,18 +428,23 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
prologue = stacksplit(ctxt, prologue, cursym, newprog, stacksize) // emit split check
}
q := prologue
if stacksize != 0 {
prologue = ctxt.StartUnsafePoint(prologue, newprog)
// Actually save LR.
prologue = obj.Appendp(prologue, newprog)
prologue.As = AMOV
prologue.Pos = q.Pos
prologue.From = obj.Addr{Type: obj.TYPE_REG, Reg: REG_LR}
prologue.To = obj.Addr{Type: obj.TYPE_MEM, Reg: REG_SP, Offset: -stacksize}
// Insert stack adjustment.
prologue = obj.Appendp(prologue, newprog)
prologue.As = AADDI
prologue.Pos = q.Pos
prologue.Pos = prologue.Pos.WithXlogue(src.PosPrologueEnd)
prologue.From = obj.Addr{Type: obj.TYPE_CONST, Offset: -stacksize}
prologue.Reg = REG_SP
prologue.To = obj.Addr{Type: obj.TYPE_REG, Reg: REG_SP}