The R13B03 release.OTP_R13B03

1 files changed, 266 insertions, 0 deletions

diff --git a/erts/emulator/hipe/hipe_risc_glue.h b/erts/emulator/hipe/hipe_risc_glue.h
new file mode 100644
index 0000000000..3b2d6498d3
--- /dev/null
+++ b/erts/emulator/hipe/hipe_risc_glue.h
@@ -0,0 +1,266 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2008-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+/* $Id$
+ */
+#ifndef HIPE_RISC_GLUE_H
+#define HIPE_RISC_GLUE_H
+
+/* arch wrapper does:
+ * #include "hipe_${arch}_asm.h"	// for NR_ARG_REGS, ${ARCH}_LEAF_WORDS
+ * #define NR_LEAF_WORDS		${ARCH}_LEAF_WORDS
+ * #define HIPE_ARCH_CALL_TO_NATIVE	hipe_${arch}_call_to_native
+ * #define HIPE_ARCH_RETURN_TO_NATIVE	hipe_${arch}_return_to_native
+ * #define HIPE_ARCH_TAILCALL_TO_NATIVE	hipe_${arch}_tailcall_to_native
+ * #define HIPE_ARCH_THROW_TO_NATIVE	hipe_${arch}_throw_to_native
+ * #include "hipe_risc_glue.h"
+ */
+
+/* Emulated code recursively calls native code.
+   The return address is `nbif_return', which is exported so that
+   tailcalls from native to emulated code can be identified. */
+unsigned int HIPE_ARCH_CALL_TO_NATIVE(Process*);
+AEXTERN(void,nbif_return,(void));
+
+/* Native-mode stubs for calling emulated-mode closures. */
+AEXTERN(void,nbif_ccallemu0,(void));
+AEXTERN(void,nbif_ccallemu1,(void));
+AEXTERN(void,nbif_ccallemu2,(void));
+AEXTERN(void,nbif_ccallemu3,(void));
+AEXTERN(void,nbif_ccallemu4,(void));
+AEXTERN(void,nbif_ccallemu5,(void));
+AEXTERN(void,nbif_ccallemu6,(void));
+
+/* Default exception handler for native code. */
+AEXTERN(void,nbif_fail,(void));
+
+/* Emulated code returns to its native code caller. */
+unsigned int HIPE_ARCH_RETURN_TO_NATIVE(Process*);
+
+/* Emulated code tailcalls native code. */
+unsigned int HIPE_ARCH_TAILCALL_TO_NATIVE(Process*);
+
+/* Emulated code throws an exception to its native code caller. */
+unsigned int HIPE_ARCH_THROW_TO_NATIVE(Process*);
+
+static __inline__ unsigned int max(unsigned int x, unsigned int y)
+{
+    return (x > y) ? x : y;
+}
+
+static __inline__ void hipe_arch_glue_init(void)
+{
+    static struct sdesc_with_exnra nbif_return_sdesc = {
+	.exnra = (unsigned long)&nbif_fail,
+	.sdesc = {
+	    .bucket = { .hvalue = (unsigned long)&nbif_return },
+	    .summary = (1<<8),
+	},
+    };
+    hipe_init_sdesc_table(&nbif_return_sdesc.sdesc);
+}
+
+static __inline__ void hipe_push_risc_nra_frame(Process *p)
+{
+    p->hipe.nsp -= 1;
+    p->hipe.nsp[0] = (Eterm)p->hipe.nra;
+}
+
+static __inline__ void hipe_pop_risc_nra_frame(Process *p)
+{
+    p->hipe.nra = (void(*)(void))p->hipe.nsp[0];
+    p->hipe.nsp += 1;
+}
+
+/* PRE: arity <= NR_ARG_REGS */
+static __inline__ void
+hipe_write_risc_regs(Process *p, unsigned int arity, Eterm reg[])
+{
+#if NR_ARG_REGS > 0
+    int i;
+    for (i = arity; --i >= 0;)
+	p->def_arg_reg[i] = reg[i];
+#endif
+}
+
+/* PRE: arity <= NR_ARG_REGS */
+static __inline__ void
+hipe_read_risc_regs(Process *p, unsigned int arity, Eterm reg[])
+{
+#if NR_ARG_REGS > 0
+    int i;
+    for (i = arity; --i >= 0;)
+	reg[i] = p->def_arg_reg[i];
+#endif
+}
+
+static __inline__ void
+hipe_push_risc_params(Process *p, unsigned int arity, Eterm reg[])
+{
+    unsigned int i;
+
+    i = arity;
+    if (i > NR_ARG_REGS) {
+	Eterm *nsp = p->hipe.nsp;
+	i = NR_ARG_REGS;
+	do {
+	    *--nsp = reg[i++];
+	} while (i < arity);
+	p->hipe.nsp = nsp;
+	i = NR_ARG_REGS;
+    }
+    /* INV: i <= NR_ARG_REGS */
+    hipe_write_risc_regs(p, i, reg);
+}
+
+static __inline__ void
+hipe_pop_risc_params(Process *p, unsigned int arity, Eterm reg[])
+{
+    unsigned int i;
+
+    i = arity;
+    if (i > NR_ARG_REGS) {
+	Eterm *nsp = p->hipe.nsp;
+	do {
+	    reg[--i] = *nsp++;
+	} while (i > NR_ARG_REGS);
+	p->hipe.nsp = nsp;
+	/* INV: i == NR_ARG_REGS */
+    }
+    /* INV: i <= NR_ARG_REGS */
+    hipe_read_risc_regs(p, i, reg);
+}
+
+/* BEAM recursively calls native code. */
+static __inline__ unsigned int
+hipe_call_to_native(Process *p, unsigned int arity, Eterm reg[])
+{
+    int nstkargs;
+
+    if ((nstkargs = arity - NR_ARG_REGS) < 0)
+	nstkargs = 0;
+    hipe_check_nstack(p, max(nstkargs + 1, NR_LEAF_WORDS));
+    hipe_push_risc_nra_frame(p);			/* needs 1 word */
+    hipe_push_risc_params(p, arity, reg);	/* needs nstkargs words */
+    return HIPE_ARCH_CALL_TO_NATIVE(p);
+}
+
+/* Native called BEAM, which now tailcalls native. */
+static __inline__ unsigned int
+hipe_tailcall_to_native(Process *p, unsigned int arity, Eterm reg[])
+{
+    int nstkargs;
+
+    if ((nstkargs = arity - NR_ARG_REGS) < 0)
+	nstkargs = 0;
+    hipe_check_nstack(p, max(nstkargs, NR_LEAF_WORDS));
+    hipe_push_risc_params(p, arity, reg);	/* needs nstkargs words */
+    return HIPE_ARCH_TAILCALL_TO_NATIVE(p);
+}
+
+/* BEAM called native, which has returned. Clean up. */
+static __inline__ void hipe_return_from_native(Process *p)
+{
+    hipe_pop_risc_nra_frame(p);
+}
+
+/* BEAM called native, which has thrown an exception. Clean up. */
+static __inline__ void hipe_throw_from_native(Process *p)
+{
+    hipe_pop_risc_nra_frame(p);
+}
+
+/* BEAM called native, which now calls BEAM.
+   Move the parameters to reg[].
+   Return zero if this is a tailcall, non-zero if the call is recursive.
+   If tailcall, also clean up native stub continuation. */
+static __inline__ int
+hipe_call_from_native_is_recursive(Process *p, Eterm reg[])
+{
+    hipe_pop_risc_params(p, p->arity, reg);
+    if (p->hipe.nra != (void(*)(void))&nbif_return)
+	return 1;
+    hipe_pop_risc_nra_frame(p);
+    return 0;
+}
+
+/* Native makes a call which needs to unload the parameters.
+   This differs from hipe_call_from_native_is_recursive() in
+   that it doesn't check for or pop the BEAM-calls-native frame.
+   It's currently only used in the implementation of apply. */
+static __inline__ void
+hipe_pop_params(Process *p, unsigned int arity, Eterm reg[])
+{
+    hipe_pop_risc_params(p, arity, reg);
+}
+
+/* Native called BEAM, which now returns back to native. */
+static __inline__ unsigned int hipe_return_to_native(Process *p)
+{
+    return HIPE_ARCH_RETURN_TO_NATIVE(p);
+}
+
+/* Native called BEAM, which now throws an exception back to native. */
+static __inline__ unsigned int hipe_throw_to_native(Process *p)
+{
+    return HIPE_ARCH_THROW_TO_NATIVE(p);
+}
+
+/* Return the address of a stub switching a native closure call to BEAM. */
+static __inline__ const void *hipe_closure_stub_address(unsigned int arity)
+{
+#if NR_ARG_REGS == 0
+    return &nbif_ccallemu0;
+#else	/* > 0 */
+    switch (arity) {
+      case 0:	return &nbif_ccallemu0;
+#if NR_ARG_REGS == 1
+      default:	return &nbif_ccallemu1;
+#else	/* > 1 */
+      case 1:	return &nbif_ccallemu1;
+#if NR_ARG_REGS == 2
+      default:	return &nbif_ccallemu2;
+#else	/* > 2 */
+      case 2:	return &nbif_ccallemu2;
+#if NR_ARG_REGS == 3
+      default:	return &nbif_ccallemu3;
+#else	/* > 3 */
+      case 3:	return &nbif_ccallemu3;
+#if NR_ARG_REGS == 4
+      default:	return &nbif_ccallemu4;
+#else	/* > 4 */
+      case 4:	return &nbif_ccallemu4;
+#if NR_ARG_REGS == 5
+      default:	return &nbif_ccallemu5;
+#else	/* > 5 */
+      case 5:	return &nbif_ccallemu5;
+#if NR_ARG_REGS == 6
+      default:	return &nbif_ccallemu6;
+#else
+#error "NR_ARG_REGS > 6 NOT YET IMPLEMENTED"
+#endif	/* > 6 */
+#endif	/* > 5 */
+#endif	/* > 4 */
+#endif	/* > 3 */
+#endif	/* > 2 */
+#endif	/* > 1 */
+    }
+#endif	/* > 0 */
+}
+
+#endif /* HIPE_RISC_GLUE_H */