-/* src/vm/jit/sparc64/asmpart.S - Java-C interface functions for Sparc
+/* src/vm/jit/sparc64/asmpart.S - Java-C interface functions for Sparc64
- 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: Andreas Krall
- Reinhard Grafl
- Alexander Jordan
-
- Changes:
-
$Id: asmpart.S 4749 2006-04-11 10:20:18Z twisti $
*/
.global asm_vm_call_method_float
.global asm_vm_call_method_double
.global asm_vm_call_method_exception_handler
+ .global asm_vm_call_method_end
.global asm_call_jit_compiler
.global asm_criticalsections
.global asm_getclassvalues_atomic
+
+ .global asm_store_fp_state_reg
+ .global asm_load_fp_state_reg
/* asm_vm_call_method ******************************************************
* *
* This function calls a Java-method (which possibly needs compilation) *
*
+ * If the java method is throwing an exception, NULL will be returned.
+ *
* C-prototype:
* java_objectheader *asm_vm_call_method(methodinfo *m, s4 vmargscount,
* vm_arg *vmargs);
asm_vm_call_method_float:
asm_vm_call_method_double:
- save %sp, -144, %sp /* 16 reg-save + 2 */
+ save %sp,-((JITSTACK_CNT+2)*8),%sp
+ add %sp,JITSTACK,%l1 /* right above window save area */
- /* todo: copy fp registers */
+ /* %i1 not needed after _nocopy -> calculate in branch delay */
- brlez %i1, calljava_argsloaded
- dec %i1
- ldx [%i2 + offvmargdata], %o0
- brlez %i1, calljava_argsloaded
-
- dec %i1
- ldx [%i2 + (offvmargdata+sizevmarg*1)], %o1
- brlez %i1, calljava_argsloaded
+ brlez %i1, calljava_nocopy
+
+ dec %i1 /* branch delay */
+ ldx [%i2 + offvmargdata],%o0
+ ldx [%i2 + offvmargtype],%l2
+ cmp %l2,2
+ be,a %xcc,calljava_arg0isfloat
+ ld [%i2 + offvmargdata],fa0f /* delay: annulled if branch not taken */
+ ldd [%i2 + offvmargdata],fa0
+calljava_arg0isfloat:
+ brlez %i1,calljava_nocopy
+
+ dec %i1 /* branch delay */
+ ldx [%i2 + (offvmargdata+sizevmarg*1)],%o1
+ ldx [%i2 + (offvmargtype+sizevmarg*1)],%l2
+ cmp %l2,2
+ be,a %xcc,calljava_arg1isfloat
+ ld [%i2 + (offvmargdata+sizevmarg*1)],fa1f
+ ldd [%i2 + (offvmargdata+sizevmarg*1)],fa1
+calljava_arg1isfloat:
+ brlez %i1,calljava_nocopy
dec %i1
- ldx [%i2 + (offvmargdata+sizevmarg*2)], %o2
- brlez %i1, calljava_argsloaded
+ ldx [%i2 + (offvmargdata+sizevmarg*2)],%o2
+ ldx [%i2 + (offvmargtype+sizevmarg*2)],%l2
+ cmp %l2,2
+ be,a %xcc,calljava_arg2isfloat
+ ld [%i2 + (offvmargdata+sizevmarg*2)],fa2f
+ ldd [%i2 + (offvmargdata+sizevmarg*2)],fa2
+calljava_arg2isfloat:
+ brlez %i1,calljava_nocopy
dec %i1
- ldx [%i2 + (offvmargdata+sizevmarg*3)], %o3
- brlez %i1, calljava_argsloaded
+ ldx [%i2 + (offvmargdata+sizevmarg*3)],%o3
+ ldx [%i2 + (offvmargtype+sizevmarg*3)],%l2
+ cmp %l2,2
+ be,a %xcc,calljava_arg3isfloat
+ ld [%i2 + (offvmargdata+sizevmarg*3)],fa3f
+ ldd [%i2 + (offvmargdata+sizevmarg*3)],fa3
+calljava_arg3isfloat:
+ brlez %i1,calljava_nocopy
dec %i1
- ldx [%i2 + (offvmargdata+sizevmarg*4)], %o4
-
- /* todo: use more out registers ? */
-
-calljava_argsloaded:
- /* todo: stack frame layout!! */
-
+ ldx [%i2 + (offvmargdata+sizevmarg*4)],%o4
+ ldx [%i2 + (offvmargtype+sizevmarg*4)],%l2
+ cmp %l2,2
+ be,a %xcc,calljava_arg4isfloat
+ ld [%i2 + (offvmargdata+sizevmarg*4)],fa4f
+ ldd [%i2 + (offvmargdata+sizevmarg*4)],fa4
+calljava_arg4isfloat:
+
+calljava_argsloaded:
brlez %i1, calljava_nocopy
- sllx %i1, 3, %l0 /* remaining args * 8 */
- mov %sp, %l1 /* right above window save area */
- sub %sp, %l0, %sp /* allocate more stack space */
+ nop
+ sllx %i1,3,%l0 /* remaining args * 8 */
+ sub %sp,%l0,%sp /* allocate more stack space */
+ add %sp,JITSTACK,%l1 /* adjust stack begin pointer */
calljava_copyloop:
- ldx [%i2 + (offvmargdata+sizevmarg*5)], %l0
- stx %l0, [%l1]
- inc sizevmarg, %i2 /* src++ */
- inc 8, %l1 /* dst++ */
- dec %i1 /* arg_count-- */
- bnz %xcc, calljava_copyloop
+ ldx [%i2 + (offvmargtype+sizevmarg*5)],%l2
+ cmp %l2,2
+ be %xcc,calljava_copyloop_float
+ nop
+ ldx [%i2 + (offvmargdata+sizevmarg*5)],%l0
+ stx %l0,[%l1]
+ b calljava_copy_done
+calljava_copyloop_float:
+ ld [%i2 + (offvmargdata+sizevmarg*5)],%f1
+ std %f0,[%l1]
+calljava_copy_done:
+ inc sizevmarg,%i2 /* src++ */
+ subcc %i1,1,%i1 /* arg_count-- */
+ bnz %xcc, calljava_copyloop /* use cc from previous instr */
+ inc 8,%l1 /* dst++ (delay) */
+
calljava_nocopy:
/* set pv, like a java method does */
mov %i0,itmp1 /* pass method info pointer via itmp1 */
setx asm_call_jit_compiler,%l0,mptr_itmp2 /* fake virtual function call (2 instr) */
- stx mptr_itmp2,[%sp + 2047 + 17*8] /* store function address */
- add %sp,2047 + 16*8,mptr_itmp2 /* set method pointer */
+ stx mptr_itmp2,[%l1 + 1*8] /* store function address */
+ mov %l1,mptr_itmp2 /* set method pointer */
ldx [1*8 + mptr_itmp2], pv_caller /* method call as in Java */
jmpl pv_caller,ra_caller /* call JIT compiler */
call builtin_throw_exception
nop
return %i7 + 8 /* implicit window restore */
- nop
+asm_vm_call_method_end:
+ mov zero,%o0 /* delay: return NULL */
asm_call_jit_compiler:
- save %sp,-208,%sp /* regsave(16) + argslots(6) + 4 float args */
+ /* stacksave for regsave(16) + argslots(6) + float args */
+ /* Note: +1 to keep stack 16-byte aligned */
+ save %sp,-((16+6+FLT_ARG_CNT+1)*8),%sp
SAVE_FLOAT_ARGUMENT_REGISTERS(22)
L_asm_call_jit_compiler_exception:
/* window still open, ra_callee valid, pv_callee undefined */
- /* get pv for further exception handling */
- mov ra_callee,%o0
- call md_codegen_get_pv_from_pc /* get PV from RA */
- nop
- mov %o0,pv_callee
-
call exceptions_get_and_clear_exception
nop
mov %o0,xptr_itmp2 /* get exception */
- mov ra_callee,xpc_itmp3 /* exception address is ra */
+ mov ra_callee,xpc_itmp3 /* exception address is address of call */
- /* don't restore callers window, behave like java non-leaf */
+ /* restore the window of the calling function */
+ restore
b L_asm_handle_nat_exception
nop
mov pv_callee,%g4
/* save bigger stack frame for float args and temps */
- save %sp,(FLT_ARG_CNT+FLT_TMP_CNT+CSTACK_CNT)*8,%sp
+ save %sp,-((FLT_ARG_CNT+FLT_TMP_CNT+CSTACK_CNT)*8),%sp
SAVE_FLOAT_ARGUMENT_REGISTERS(CSTACK_CNT)
SAVE_FLOAT_TEMPORARY_REGISTERS(CSTACK_CNT+FLT_ARG_CNT)
mov pv_callee,pv_caller
/* create window and stack frame */
- save %sp,-((FLT_ARG_CNT+FLT_TMP_CNT+CSTACK_CNT+4)*8),%sp
+ save %sp,-((FLT_ARG_CNT+FLT_TMP_CNT+CSTACK_CNT+6)*8),%sp
- SAVE_FLOAT_ARGUMENT_REGISTERS(CSTACK_CNT)
- SAVE_FLOAT_TEMPORARY_REGISTERS(CSTACK_CNT+FLT_ARG_CNT)
+ SAVE_FLOAT_RETURN_REGISTER(CSTACK_CNT)
+ SAVE_FLOAT_ARGUMENT_REGISTERS(CSTACK_CNT+1)
+ SAVE_FLOAT_TEMPORARY_REGISTERS(CSTACK_CNT+1+FLT_ARG_CNT)
mov itmp1,%l0 /* save itmp1 */
mov itmp2,%l1 /* save itmp2 */
call patcher_wrapper
nop
- RESTORE_FLOAT_ARGUMENT_REGISTERS(CSTACK_CNT)
- RESTORE_FLOAT_TEMPORARY_REGISTERS(CSTACK_CNT+FLT_ARG_CNT)
+ RESTORE_FLOAT_RETURN_REGISTER(CSTACK_CNT)
+ RESTORE_FLOAT_ARGUMENT_REGISTERS(CSTACK_CNT+1)
+ RESTORE_FLOAT_TEMPORARY_REGISTERS(CSTACK_CNT+1+FLT_ARG_CNT)
mov %l0,itmp1 /* restore itmp1 */
mov %l1,itmp2 /* restore itmp2 */
nop
+
+/* asm_store_fp_state_reg **************************************************
+ * *
+ * This function stores the 64-bit floating point state register to a *
+ * memory location. (which needs to be 8-byte aligned) *
+ * *
+ * C-prototype: *
+ * void asm_store_fp_state_reg(u8 *mem); *
+ * *
+ **************************************************************************/
+
+asm_store_fp_state_reg:
+ stx %fsr,[%o0]
+ retl /* return from leaf */
+ nop
+
+/* asm_load_fp_state_reg ***************************************************
+ * *
+ * This function loades the 64-bit floating point state register from a *
+ * memory location. (which needs to be 8-byte aligned) *
+ * *
+ * C-prototype: *
+ * void asm_load_fp_state_reg(u8 *mem); *
+ * *
+ **************************************************************************/
+
+asm_load_fp_state_reg:
+ ldx [%o0],%fsr
+ retl /* return from leaf */
+ nop
+
+
+
+
asm_getclassvalues_atomic:
_crit_restart:
_crit_begin:
jmpl ra_caller+8,zero /* caller's ra, b/c no window save */
nop
- .end asm_getclassvalues_atomic
-
.data
.xword _crit_restart
#endif
.xword 0
+
+/* disable exec-stacks ********************************************************/
+
+#if defined(__linux__) && defined(__ELF__)
+ .section .note.GNU-stack,"",%progbits
+#endif
+/*
+ * These are local overrides for various environment variables in Emacs.
+ * Please do not remove this and leave it at the end of the file, where
+ * Emacs will automagically detect them.
+ * ---------------------------------------------------------------------
+ * Local variables:
+ * mode: asm
+ * indent-tabs-mode: t
+ * c-basic-offset: 4
+ * tab-width: 4
+ * End:
+ * vim:noexpandtab:sw=4:ts=4:
+ */
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