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authorSverker Eriksson <[email protected]>2011-10-14 19:23:26 +0200
committerSverker Eriksson <[email protected]>2011-10-26 18:19:20 +0200
commit17241c30f56ba6bc31518f1c905f6178784fb4fa (patch)
tree10b6e786c2915bdfe55351088fc5634f49475925 /erts/emulator/hipe
parent5a78dd349ab7974253e3058f9da73188d5394526 (diff)
downloadotp-17241c30f56ba6bc31518f1c905f6178784fb4fa.tar.gz
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erts-hipe: Fix new trap conventions for x86, amd64 and ppc
Diffstat (limited to 'erts/emulator/hipe')
-rw-r--r--erts/emulator/hipe/hipe_abi.txt2
-rw-r--r--erts/emulator/hipe/hipe_mode_switch.c24
-rw-r--r--erts/emulator/hipe/hipe_risc_glue.h16
-rw-r--r--erts/emulator/hipe/hipe_x86_glue.h19
4 files changed, 42 insertions, 19 deletions
diff --git a/erts/emulator/hipe/hipe_abi.txt b/erts/emulator/hipe/hipe_abi.txt
index d0ec162342..9d4726de9d 100644
--- a/erts/emulator/hipe/hipe_abi.txt
+++ b/erts/emulator/hipe/hipe_abi.txt
@@ -62,7 +62,7 @@ exceptional condition, it puts an error code in p->freason
and returns THE_NON_VALUE (zero, except in debug mode).
If p->freason == TRAP, then the BIF redirects its call to some
-other function, given by p->def_arg_reg[].
+other function, given by p->i
The BIF and the new callee may have different arities.
The "hipe_${ARCH}_bifs.m4" macro files take care of these issues
diff --git a/erts/emulator/hipe/hipe_mode_switch.c b/erts/emulator/hipe/hipe_mode_switch.c
index e5b8cf8a19..2b0bcca5c6 100644
--- a/erts/emulator/hipe/hipe_mode_switch.c
+++ b/erts/emulator/hipe/hipe_mode_switch.c
@@ -318,8 +318,8 @@ Process *hipe_mode_switch(Process *p, unsigned cmd, Eterm reg[])
* Native code called a BIF, which "failed" with a TRAP to BEAM.
* Prior to returning, the BIF stored (see BIF_TRAP<N>):
- * the callee's address in p->def_arg_reg[3]
- * the callee's parameters in p->def_arg_reg[0..2]
+ * the callee's address in p->i
+ * the callee's parameters in reg[0..2]
* the callee's arity in p->arity (for BEAM gc purposes)
*
* We need to remove the BIF's parameters from the native
@@ -331,19 +331,8 @@ Process *hipe_mode_switch(Process *p, unsigned cmd, Eterm reg[])
*/
unsigned int i, is_recursive = 0;
- /* Save p->arity, then update it with the original BIF's arity.
- Get rid of any stacked parameters in that call. */
- /* XXX: hipe_call_from_native_is_recursive() copies data to
- reg[], which is useless in the TRAP case. Maybe write a
- specialised hipe_trap_from_native_is_recursive() later. */
if (p->hipe.nsp != NULL) {
- unsigned int callee_arity;
- callee_arity = p->arity;
- p->arity = p->hipe.narity; /* caller's arity */
- is_recursive = hipe_call_from_native_is_recursive(p, reg);
-
- p->i = (Eterm *)(p->def_arg_reg[3]);
- p->arity = callee_arity;
+ is_recursive = hipe_trap_from_native_is_recursive(p);
}
/* Schedule next process if current process was hibernated or is waiting
@@ -353,15 +342,14 @@ Process *hipe_mode_switch(Process *p, unsigned cmd, Eterm reg[])
goto do_schedule;
}
if (p->status == P_WAITING) {
+ for (i = 0; i < p->arity; ++i)
+ p->arg_reg[i] = reg[i];
goto do_schedule;
}
- for (i = 0; i < p->arity; ++i)
- reg[i] = p->def_arg_reg[i];
-
if (is_recursive)
hipe_push_beam_trap_frame(p, reg, p->arity);
-
+
result = HIPE_MODE_SWITCH_RES_CALL;
break;
}
diff --git a/erts/emulator/hipe/hipe_risc_glue.h b/erts/emulator/hipe/hipe_risc_glue.h
index e74023e3e9..cc2671c016 100644
--- a/erts/emulator/hipe/hipe_risc_glue.h
+++ b/erts/emulator/hipe/hipe_risc_glue.h
@@ -199,6 +199,22 @@ hipe_call_from_native_is_recursive(Process *p, Eterm reg[])
return 0;
}
+/* BEAM called native, which called BIF that returned trap
+ * Discard bif parameters.
+ * If tailcall, also clean up native stub continuation. */
+static __inline__ int
+hipe_trap_from_native_is_recursive(Process *p)
+{
+ if (p->hipe.narity > NR_ARG_REGS) {
+ p->hipe.nsp += (p->hipe.narity - NR_ARG_REGS);
+ }
+ 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.
diff --git a/erts/emulator/hipe/hipe_x86_glue.h b/erts/emulator/hipe/hipe_x86_glue.h
index a7b0f164be..b0db93267c 100644
--- a/erts/emulator/hipe/hipe_x86_glue.h
+++ b/erts/emulator/hipe/hipe_x86_glue.h
@@ -186,6 +186,25 @@ hipe_call_from_native_is_recursive(Process *p, Eterm reg[])
return 0;
}
+/* BEAM called native, which called BIF that returned trap
+ * Discard bif parameters.
+ * If tailcall, also clean up native stub continuation. */
+static __inline__ int
+hipe_trap_from_native_is_recursive(Process *p)
+{
+ Eterm nra = *(p->hipe.nsp++);
+
+ if (p->hipe.narity > NR_ARG_REGS) {
+ p->hipe.nsp += (p->hipe.narity - NR_ARG_REGS);
+ }
+ if (nra != (Eterm)nbif_return) {
+ *--(p->hipe.nsp) = nra;
+ return 1;
+ }
+ 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.