src/pkg/runtime/funcdata.h - Issue 12328044: code review 12328044: cmd/cc, cmd/gc, runtime: emit bitmaps for scanning locals.

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Delta Between Two Patch Sets: src/pkg/runtime/funcdata.h

Issue 12328044: code review 12328044: cmd/cc, cmd/gc, runtime: emit bitmaps for scanning locals. (Closed)

Left Patch Set: Created 11 years, 7 months ago

Right Patch Set: diff -r 6058f523a441 https://code.google.com/p/go/ Created 11 years, 7 months ago

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1 // Copyright 2013 The Go Authors. All rights reserved.	1 // Copyright 2013 The Go Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style	2 // Use of this source code is governed by a BSD-style

3 // license that can be found in the LICENSE file.	3 // license that can be found in the LICENSE file.

4	4

5 // This file defines the IDs for PCDATA and FUNCDATA instructions	5 // This file defines the IDs for PCDATA and FUNCDATA instructions

6 // in Go binaries. It is included by both C and assembly, so it must	6 // in Go binaries. It is included by both C and assembly, so it must

7 // be written using #defines. It is included by the runtime package	7 // be written using #defines. It is included by the runtime package

8 // as well as the compilers.	8 // as well as the compilers.

9	9

10 #define PCDATA_ArgSize 0 /* argument size at CALL instruction */	10 #define PCDATA_ArgSize 0 /* argument size at CALL instruction */

11	11

12 #define FUNCDATA_GC 0 /* garbage collector block */	12 #define FUNCDATA_GCArgs 0 /* garbage collector blocks */

	13 #define FUNCDATA_GCLocals 1

13	14

14 // To be used in assembly.	15 // To be used in assembly.

15 #define ARGSIZE(n) PCDATA $PCDATA_ArgSize, $n	16 #define ARGSIZE(n) PCDATA $PCDATA_ArgSize, $n

16	17

17 // ArgsSizeUnknown is set in Func.argsize to mark all functions	18 // ArgsSizeUnknown is set in Func.argsize to mark all functions

18 // whose argument size is unknown (C vararg functions, and	19 // whose argument size is unknown (C vararg functions, and

19 // assembly code without an explicit specification).	20 // assembly code without an explicit specification).

20 // This value is generated by the compiler, assembler, or linker.	21 // This value is generated by the compiler, assembler, or linker.

21 #define ArgsSizeUnknown 0x80000000	22 #define ArgsSizeUnknown 0x80000000

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