Add some comments to describe assembly #defines.
Change-Id: I2e9250a5ae522368ff5abe18e5fd13c8abe94f32
diff --git a/src/asm_support.h b/src/asm_support.h
index 0a8489c..470b81f 100644
--- a/src/asm_support.h
+++ b/src/asm_support.h
@@ -17,22 +17,29 @@
#ifndef ART_SRC_ASM_SUPPORT_H_
#define ART_SRC_ASM_SUPPORT_H_
+// Value loaded into rSUSPEND for quick. When this value is counted down to zero we do a suspend
+// check.
#define SUSPEND_CHECK_INTERVAL (1000)
+// Offsets within java.lang.String.
#define STRING_VALUE_OFFSET 8
#define STRING_COUNT_OFFSET 12
#define STRING_OFFSET_OFFSET 20
#define STRING_DATA_OFFSET 12
#if defined(__arm__)
+// Register holding suspend check count down.
#define rSUSPEND r4
+// Register holding Thread::Current().
#define rSELF r9
// Offset of field Thread::suspend_count_ verified in InitCpu
#define THREAD_FLAGS_OFFSET 0
// Offset of field Thread::exception_ verified in InitCpu
#define THREAD_EXCEPTION_OFFSET 12
#elif defined(__mips__)
+// Register holding suspend check count down.
#define rSUSPEND $s0
+// Register holding Thread::Current().
#define rSELF $s1
// Offset of field Thread::suspend_count_ verified in InitCpu
#define THREAD_FLAGS_OFFSET 0
