/* src/vm/jit/powerpc64/linux/md-abi.h - defines for PowerPC64 Linux ABI
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
+ Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
J. Wenninger, Institut f. Computersprachen - TU Wien
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Christian Thalinger
-
- Changes:
-
- $Id: md-abi.h 4357 2006-01-22 23:33:38Z twisti $
-
*/
/* preallocated registers *****************************************************/
/* integer registers */
-
+
+#define REG_ZERO 0 /* almost always zero (in address caluclation) */
+#define REG_TOC 2 /* TOC (see function descriptors ELF ABI) */
#define REG_RESULT 3 /* to deliver method results */
-#define REG_PV 13 /* procedure vector, must be provided by caller */
+#define REG_PV 14 /* procedure vector, must be provided by caller */
#define REG_METHODPTR 12 /* pointer to the place from where the procedure */
/* vector has been fetched */
#define REG_ITMP1 11 /* temporary register */
#define REG_SP 1 /* stack pointer */
#define REG_ZERO 0 /* almost always zero: only in address calc. */
+#define REG_A0 3 /* define some argument registers */
+#define REG_A1 4
+#define REG_A2 5
+#define REG_A3 6
+
/* floating point registers */
#define REG_FRESULT 1 /* to deliver floating point method results */
#define REG_FTMP2 17 /* temporary floating point register */
#define REG_FTMP3 0 /* temporary floating point register */
-#define REG_IFTMP 0 /* temporary integer and floating point register */
+#define REG_IFTMP 16 /* temporary integer and floating point register */
+
+#define REG_FA0 1 /* define some argument registers */
+#define REG_FA1 2
#define INT_REG_CNT 32 /* number of integer registers */
-#define INT_SAV_CNT 10 /* number of int callee saved registers */
+#define INT_SAV_CNT 9 /* number of int callee saved registers */
#define INT_ARG_CNT 8 /* number of int argument registers */
#define INT_TMP_CNT 7 /* number of integer temporary registers */
-#define INT_RES_CNT 7 /* number of integer reserved registers */
+#define INT_RES_CNT 8 /* number of integer reserved registers */
#define FLT_REG_CNT 32 /* number of float registers */
-#define FLT_SAV_CNT 10 /* number of float callee saved registers */
-#define FLT_ARG_CNT 8 /* number of float argument registers */
-#define FLT_TMP_CNT 11 /* number of float temporary registers */
+#define FLT_SAV_CNT 16 /* number of float callee saved registers */
+#define FLT_ARG_CNT 13 /* number of float argument registers */
+#define FLT_TMP_CNT 0 /* number of float temporary registers */
#define FLT_RES_CNT 3 /* number of float reserved registers */
#define TRACE_ARGS_NUM 8
/* ABI defines ****************************************************************/
-#define LA_SIZE 8 /* linkage area size */
+#define LA_SIZE 48 /* linkage area size */
#define LA_SIZE_ALIGNED 16 /* linkage area size aligned to 16-byte */
-#define LA_WORD_SIZE 2 /* linkage area size in words: 2 * 4 = 8 */
-
-#define LA_LR_OFFSET 4 /* link register offset in linkage area */
+#define LA_SIZE_IN_POINTERS (LA_SIZE / SIZEOF_VOID_P)
+#define LA_LR_OFFSET 16 /* link register offset in linkage area */
+#define PA_SIZE (PA_SIZE_IN_POINTERS*8)
+#define PA_SIZE_IN_POINTERS 8 /* linux/ppc64 has a minimun parameter save area size, XXX:darwin? */
/* #define ALIGN_FRAME_SIZE(sp) (sp) */
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