cmd/internal/obj/riscv: populate DWARF register mapping for riscv64
Updates #27532
Change-Id: If147242c45d5c2d5cdc5b0428db32eeec13a958a
Reviewed-on: https://go-review.googlesource.com/c/go/+/215377
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/src/cmd/internal/obj/riscv/cpu.go b/src/cmd/internal/obj/riscv/cpu.go
index 8ea0083..61a68b9 100644
--- a/src/cmd/internal/obj/riscv/cpu.go
+++ b/src/cmd/internal/obj/riscv/cpu.go
@@ -183,6 +183,77 @@
REGG = REG_G
)
+// https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#dwarf-register-numbers
+var RISCV64DWARFRegisters = map[int16]int16{
+ // Integer Registers.
+ REG_X0: 0,
+ REG_X1: 1,
+ REG_X2: 2,
+ REG_X3: 3,
+ REG_X4: 4,
+ REG_X5: 5,
+ REG_X6: 6,
+ REG_X7: 7,
+ REG_X8: 8,
+ REG_X9: 9,
+ REG_X10: 10,
+ REG_X11: 11,
+ REG_X12: 12,
+ REG_X13: 13,
+ REG_X14: 14,
+ REG_X15: 15,
+ REG_X16: 16,
+ REG_X17: 17,
+ REG_X18: 18,
+ REG_X19: 19,
+ REG_X20: 20,
+ REG_X21: 21,
+ REG_X22: 22,
+ REG_X23: 23,
+ REG_X24: 24,
+ REG_X25: 25,
+ REG_X26: 26,
+ REG_X27: 27,
+ REG_X28: 28,
+ REG_X29: 29,
+ REG_X30: 30,
+ REG_X31: 31,
+
+ // Floating-Point Registers.
+ REG_F0: 32,
+ REG_F1: 33,
+ REG_F2: 34,
+ REG_F3: 35,
+ REG_F4: 36,
+ REG_F5: 37,
+ REG_F6: 38,
+ REG_F7: 39,
+ REG_F8: 40,
+ REG_F9: 41,
+ REG_F10: 42,
+ REG_F11: 43,
+ REG_F12: 44,
+ REG_F13: 45,
+ REG_F14: 46,
+ REG_F15: 47,
+ REG_F16: 48,
+ REG_F17: 49,
+ REG_F18: 50,
+ REG_F19: 51,
+ REG_F20: 52,
+ REG_F21: 53,
+ REG_F22: 54,
+ REG_F23: 55,
+ REG_F24: 56,
+ REG_F25: 57,
+ REG_F26: 58,
+ REG_F27: 59,
+ REG_F28: 60,
+ REG_F29: 61,
+ REG_F30: 62,
+ REG_F31: 63,
+}
+
// Prog.Mark flags.
const (
// NEED_PCREL_ITYPE_RELOC is set on AUIPC instructions to indicate that
diff --git a/src/cmd/internal/obj/riscv/obj.go b/src/cmd/internal/obj/riscv/obj.go
index 2da9512..f2ff4ff 100644
--- a/src/cmd/internal/obj/riscv/obj.go
+++ b/src/cmd/internal/obj/riscv/obj.go
@@ -27,9 +27,6 @@
"fmt"
)
-// TODO(jsing): Populate.
-var RISCV64DWARFRegisters = map[int16]int16{}
-
func buildop(ctxt *obj.Link) {}
// jalrToSym replaces p with a set of Progs needed to jump to the Sym in p.
