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cmd/link: generate DWARF info using symbols

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This updates dwarf.go to generate debug information as symbols
instead of directly writing to the output file. This should make
it easier to move generation of some of the debug info into the compiler.

Change-Id: Id2358988bfb689865ab4d68f82716f0676336df4
Reviewed-on: https://go-review.googlesource.com/20679
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Ryan Brown 2016-03-14 09:23:04 -07:00 • committed by David Crawshaw
parent 0382a30dd6
commit a037c73ccf
13 changed files with 729 additions and 1064 deletions
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4
src/cmd/internal/obj/link.go
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@ -423,6 +423,8 @@ const (
SCONST
SDYNIMPORT
SHOSTOBJ
SDWARFSECT
SDWARFINFO
SSUB = 1 << 8
SMASK = SSUB - 1
SHIDDEN = 1 << 9
@ -495,6 +497,8 @@ const (
// of a JMP instruction, by encoding the address into the instruction.
// The stack nosplit check ignores this since it is not a function call.
R_JMPMIPS
// R_DWARFREF resolves to the offset of the symbol from its section.
R_DWARFREF
// Platform dependent relocations. Architectures with fixed width instructions
// have the inherent issue that a 32-bit (or 64-bit!) displacement cannot be