-/* src/vm/jit/x86_64/asmpart.S - Java-C interface functions for x86_64
+/* src/vm/jit/s390/asmpart.S - Java-C interface functions for s390
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
+ Copyright (C) 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
- Christian Thalinger
-
- Changes: Edwin Steiner
-
- $Id: asmpart.S 7596 2007-03-28 21:05:53Z twisti $
-
*/
#include "vm/jit/s390/arch.h"
#include "vm/jit/s390/md-abi.h"
#include "vm/jit/s390/md-asm.h"
-#include "vm/jit/s390/offsets.h"
#include "vm/jit/abi-asm.h"
#include "vm/jit/methodheader.h"
-/* Copy a call to a PIC function from gcc -S
- * We setup a temporary literal pool pointer.
- */
-
-#define PIC_CALL(fun, magic) \
- bras itmp3, L_##magic##_lp_end ; \
-L_##magic##_lp: ; \
-L_##magic##_lp_5: ; \
- .long fun@PLTOFF ; \
-L_##magic##_lp_4: ; \
- .long _GLOBAL_OFFSET_TABLE_-L_##magic##_lp ; \
-L_##magic##_lp_end: ; \
- l itmp2,L_##magic##_lp_4-L_##magic##_lp(itmp3) ; \
- la itmp2,0(itmp2,itmp3) ; \
- l itmp1,L_##magic##_lp_5-L_##magic##_lp(itmp3) ; \
- bas %r14,0(itmp1,itmp2)
-
.text
.globl asm_abstractmethoderror
- .globl asm_patcher_wrapper
-
- .globl asm_replacement_out
- .globl asm_replacement_in
-
.globl asm_builtin_f2i
.globl asm_builtin_f2l
.globl asm_builtin_d2i
.globl asm_builtin_d2l
- .globl asm_criticalsections
- .globl asm_getclassvalues_atomic
-
asm_abstractmethoderror:
.long 0
-asm_replacement_out:
- .long 0
-asm_replacement_in:
- .long 0
asm_builtin_f2i:
.long 0
asm_builtin_f2l:
asm_builtin_d2l:
.long 0
+/* Generates a PIC call.
+ *
+ * func: function to call
+ * tag: tag unique for this call to generate a label
+ * tmp: one temporary register needed for calculation
+ *
+ * The offset table used is located at the bottom of this file.
+ *
+ * Note: destroys r12. r12 MUST contain GOT for PIC calls!
+ */
+#define CALL_PIC(func, tag) \
+ bras %r14, L_bras_##tag; /* get PC */ \
+L_bras_##tag: \
+ l %r12, L_offsets - L_bras_##tag (%r14); /* load offset to PLT */ \
+ la %r12, L_offsets - L_bras_##tag (%r12, %r14); /* load PLT address */ \
+ l %r14, L_offset_##func - L_bras_##tag (%r14); /* load offset to func */ \
+ bas %r14, 0(%r14, %r12);
+
/********************* function asm_calljavafunction ***************************
* *
* This function calls a Java-method (which possibly needs compilation) *
* *
*******************************************************************************/
- .long 0 /* catch type all */
- .long 0 /* exception handler pc */
- .long 0 /* end pc */
- .long 0 /* start pc */
- .long 1 /* extable size */
.long 0 /* line number table start */
.long 0 /* line number table size */
.long 0 /* fltsave */
.long 0 /* intsave */
.long 0 /* IsLeaf */
- .long 0 /* IsSync */
.long 0 /* frame size */
.long 0 /* codeinfo pointer */
asm_vm_call_method_float:
asm_vm_call_method_double:
-/*
-
-a0: methodinfo *m
-a1: s4 vmargscount ---> v0: java_objectheader *
-a2: vm_arg *vmargs
-r14: return address
-
-96 ... on stack parameters (none)
-0 - 96 register save area
--------------------------------------------------- <- SP on asm_vm_... entry
- local variables
- saved return address (important to be at 0(sp) because of md_stacktrace_get_returnaddress)
------------------------------------------ <- SP after stack frame allocation
- arguments on stack
----------------------------------------------------- <- SP on JIT code entry
- saved return address (callee saved)
-
-*/
-
-
-/*
- Regiser usage:
- itmp1: argument block pointer
- itmp2: argument counter
- s0: integer argument counter
- s1: float argument counter
- s2: integer register counter
- s3: backup argument block pointer
- s4: backup argument count
-*/
-
- stm %r6, %r15, 24(sp) /* save callers regiters */
- stm a0, a2, 8(sp) /* save arguments */
- ahi sp, -8 /* allocate stack space for local variables */
- st %r14, 0(sp) /* store RA once more at bottom of stack frame */
-
- ltr a1, a1 /* maybe we have no args... */
- je L_no_args
-
- lr itmp2, a1 /* load arg count */
- lr itmp1, a2 /* load arg pointer */
-
- ahi itmp1, -sizevmarg /* initialize arg pointer */
- ahi itmp2, 1 /* initialize arg count */
- lhi s0, 0 /* initialize integer arg counter */
- lhi s2, 0 /* initialize integer register counter */
- lhi s1, 0 /* initialize float arg counter */
-
- lr s4, a1 /* backup arg count */
- lr s3, a2 /* backup arg pointer */
-
-L_register_copy:
-
- ahi itmp1, sizevmarg /* forward arg pointer */
- ahi itmp2, -1 /* decrement arg count */
- je L_register_copy_done /* no arguments left */
-
- tm offvmargtype(itmp1), 0x02 /* is this a float/double type? */
- jne L_register_handle_float
-
-L_register_handle_int:
-
- chi s2, INT_ARG_CNT /* are we out of integer arg registers ? */
- je L_register_copy /* yes, next loop */
-
- tm offvmargtype(itmp1), 0x01 /* is this a 2 word type ? */
- jne L_register_handle_long
-
- ahi s0, 1 /* increment integer arg counter */
- ahi s2, 1 /* increment integer register counter */
-
- /* handle argument */
-
- chi s2, 1
- je L_handle_i0
- chi s2, 2
- je L_handle_i1
- chi s2, 3
- je L_handle_i2
- chi s2, 4
- je L_handle_i3
- chi s2, 5
- je L_handle_i4
-
-L_register_handle_long:
-
- chi s2, (INT_ARG_CNT - 1) /* are there 2 integer arg registers left ? */
- jl L_register_handle_long_continue /* yes */
- lhi s2, INT_ARG_CNT /* no, drop last register */
- j L_register_copy
-
-L_register_handle_long_continue:
-
- ahi s0, 1 /* increment integer arg counter */
- ahi s2, 2 /* consume 2 integer arg registers */
+ ahi sp, -8*4 /* allocate stack frame */
- /* handle argument */
+ /* a0: PV */
+ /* a1: data structure */
+ /* a2: number of stack arguments */
- chi s2, 1
- je L_handle_l0
- chi s2, 2
- je L_handle_l1
- chi s2, 3
- je L_handle_l2
- chi s2, 4
- je L_handle_l3
+ st s0, 0*4(sp) /* store used calle saved registers */
+ st s1, 1*4(sp)
+ st a0, 2*4(sp)
+ st %r12, 3*4(sp) /* %r12 is callee saved, we'll need it as GOT */
+ st pv, 4*4(sp)
+ st a4, 5*4(sp) /* a4 is callee saved in terms of C abi */
+ std ftmp1, 6*4(sp) /* ftmp1 and ftmp2 are callees saved in terms of C abi */
+ std ftmp2, 8*4(sp)
+ st ra, 10*4(sp)
-L_register_handle_float:
+ lr s0, a1 /* data structure */
+ lr %r0, a2 /* number of stack arguments */
- chi s1, FLT_ARG_CNT /* are we out of float arg registers */
- je L_register_copy /* no arg regisers left */
+ l a0, 0*8+4(s0) /* big endian */
+ l a1, 1*8+4(s0)
+ l a2, 2*8+4(s0)
+ l a3, 3*8+4(s0)
+ l a4, 4*8+4(s0)
- ahi s1, 1 /* increment float argument counter */
+ ld fa0, 5*8(s0)
+ ld fa1, 6*8(s0)
- tm offvmargtype(itmp1), 0x01 /* is this a 2 word type ? */
- jne L_register_handle_double
+ lr s1, sp /* backup stack pointer */
- /* handle argument */
+ ltr %r0, %r0 /* are there any stack arguments ? */
+ je L_asm_vm_call_method_stack_copy_done
+ lr %r1, %r0 /* copy number of stack arguments */
+ sll %r1, 3 /* calculate stackframe size */
+ sr sp, %r1 /* allocate stack frame */
+ lr %r1, sp /* temporary stack pointer */
- chi s1, 1
- je L_handle_f0
- chi s1, 2
- je L_handle_f1
+L_asm_vm_call_method_stack_copy_loop:
-L_register_handle_double:
+ mvc 0(8, %r1), 7*8(s0) /* copy argument */
+ ahi %r1, 8 /* increase sp */
+ ahi s0, 8 /* set address of next argument */
+ ahi %r0, -1 /* substract 1 argument */
+ jh L_asm_vm_call_method_stack_copy_loop
- /* handle argument */
+L_asm_vm_call_method_stack_copy_done:
- chi s1, 1
- je L_handle_d0
- chi s1, 2
- je L_handle_d1
+ la mptr, 2*4(s1) /* load method pointer */
+ l pv, 0(mptr) /* load procedure vector from method pointer */
+ basr ra, pv /* call method */
+ lr sp, s1 /* restore stack pointer */
-L_register_copy_done:
-
-/*
- Regiser usage:
- itmp1: argument block pointer
- itmp2: argument counter
- s0: integer argument counter (initialized by previous code)
- s1: float argument counter (initialized by previous code)
- s2: pointer to current argument on stack
- s3: backup argument block pointer (used to initialize itmp1)
- after used as backup of original stack pointer
- s4: backup argument count (used to initialize itmp2)
- after used as size of parameters on stack
-*/
-
- lr itmp2, s4 /* restore argument counter */
- lr itmp1, s3 /* restore argument block pointer */
-
- /* calculate remaining arguments */
- sr s4, s0 /* - integer arguments in registers */
- sr s4, s1 /* - float arguments in registers */
-
- lr s3, sp /* backup stack pointer (does not alter CC) */
-
- je L_copy_done /* no arguments left for stack */
-
- sll s4, 3 /* allocate 8 bytes per parameter on stack */
- sr sp, s4 /* allocate stack space for arguments */
-
- lr s2, sp /* points now to current argument on stack */
-
- ahi itmp1, -sizevmarg /* initialize argument block pointer */
- ahi itmp2, 1 /* initialize argument counter */
-
-L_stack_copy_loop:
-
- ahi itmp1, sizevmarg /* forward argument block pointer */
- ahi itmp2, -1 /* decrement argument counter */
- je L_copy_done /* all arguments done */
-
- tm offvmargtype(itmp1), 0x0 /* is this a float/double type? */
- jne L_stack_handle_float
-
-L_stack_handle_int:
-
- ahi s0, -1 /* decrement number of integer arguments in regs */
- jhe L_stack_copy_loop /* argument is in register */
-
- tm offvmargtype(itmp1), 0x01 /* is this a 2 word type ? */
- jne L_stack_handle_long
-
- mvc 0(4, s2), offvmargdata+4(itmp1) /* copy integer value */
- ahi s2, 4
- j L_stack_copy_loop
-
-L_stack_handle_long:
-
- mvc 0(8, s2), offvmargdata(itmp1) /* copy long value */
- ahi s2, 8
- j L_stack_copy_loop
-
-L_stack_handle_float:
-
- ahi s1, -1 /* decrement number of float arguments in regs */
- jhe L_stack_copy_loop /* argument is in register */
-
- tm offvmargtype(itmp1), 0x01 /* is this a 2 word type ? */
- jne L_stack_handle_double
-
- mvc 0(4, s2), offvmargdata(itmp1) /* copy float value */
- ahi s2, 4
- j L_stack_copy_loop
-
-L_stack_handle_double:
-
- mvc 0(8, s2), offvmargdata(itmp1) /* copy double value */
- ahi s2, 8
- j L_stack_copy_loop
-
-L_copy_done:
-
- /* Now we call the compiler in a rather questionable way i needed
- * some days to understand:
- *
- * We can't simply call asm_call_jit_compiler, but we have to call an
- * address loaded from memory like it is done in JIT code.
- *
- * This is because the compiler will intercept the instruction before
- * the call instruction, extract the address where the function pointer
- * has been loaded from and overwrite it with the code entry.
- *
- * Arguments are passed in temporary registers.
- */
-
- /* load address of L_asm_call_jit_compiler into memory */
-
- basr mptr, 0 /* store PC */
-L_basr:
- la mptr, L_asm_call_jit_compiler-L_basr(mptr) /* add offset to PC */
- st mptr, 4(s3) /* store on stack */
-
- l itmp1, 8+8(s3) /* load methodinfo for compiler */
- la mptr, 4(s3) /* store **function in mptr for compiler */
-
- /* call L_asm_call_jit_compiler like JIT code would do */
-
- l itmp3, 0(mptr) /* load address of target from memory */
- basr %r14, itmp3 /* jump to target */
+L_asm_vm_call_method_return:
- /* todo will s4 survive the call? */
- ar sp, s4 /* remove stack space for arguments */
+ l s0, 0*4(sp) /* restore used callee saved registers */
+ l s1, 1*4(sp)
+ l %r12, 3*4(sp)
+ l pv, 4*4(sp)
+ l a4, 5*4(sp)
+ ld ftmp1, 6*4(sp)
+ ld ftmp2, 8*4(sp)
+ l ra, 10*4(sp)
-L_asm_vm_call_method_return:
+ ahi sp, 8*4 /* remove stackframe */
+ br ra /* return */
- ahi sp, 8 /* remove stack space for local variables */
- lm %r6, %r15, 24(sp) /* restore callers registers */
- br %r14 /* return */
asm_vm_call_method_exception_handler:
lr a0, xptr
- bras %r14, L_avcmeh_bras
- .long builtin_throw_exception
-L_avcmeh_bras:
- l %r14, 0(%r14)
ahi sp, -96
- basr %r14, %r14
+ CALL_PIC(builtin_throw_exception, avcmeh)
ahi sp, 96
j L_asm_vm_call_method_return
-/* .... */
-
-L_no_args:
- lr s3, sp
- lhi s4, 0
- j L_copy_done
-
-L_handle_i0:
- l a0, offvmargdata+4(itmp1)
- j L_register_copy
-L_handle_i1:
- l a1, offvmargdata+4(itmp1)
- j L_register_copy
-L_handle_i2:
- l a2, offvmargdata+4(itmp1)
- j L_register_copy
-L_handle_i3:
- l a3, offvmargdata+4(itmp1)
- j L_register_copy
-L_handle_i4:
- l a4, offvmargdata+4(itmp1)
- j L_register_copy
-
-L_handle_l0:
- lm a0, a1, offvmargdata(itmp1)
- j L_register_copy
-L_handle_l1:
- lm a1, a2, offvmargdata(itmp1)
- j L_register_copy
-L_handle_l2:
- lm a2, a3, offvmargdata(itmp1)
- j L_register_copy
-L_handle_l3:
- lm a3, a4, offvmargdata(itmp1)
- j L_register_copy
-
-L_handle_f0:
- le fa0, offvmargdata(itmp1)
- j L_register_copy
-L_handle_f1:
- le fa1, offvmargdata(itmp1)
- j L_register_copy
-
-L_handle_d0:
- ld fa0, offvmargdata(itmp1)
- j L_register_copy
-L_handle_d1:
- ld fa1, offvmargdata(itmp1)
- j L_register_copy
-
asm_vm_call_method_end:
- nop
+ brc 0,0
/****************** function asm_call_jit_compiler *****************************
* *
* invokes the compiler for untranslated JavaVM methods. *
* *
-* itmp1: methodinfo pointer *
-* itmp2: method pointer *
+* itmp3: methodinfo pointer *
+* itmp1: method pointer *
* *
*******************************************************************************/
asm_call_jit_compiler:
L_asm_call_jit_compiler:
-# define ACJC_STACKFRAME (4 + (4 * 4) + (2 * 8) + 96)
+# define ACJC_STACKFRAME ((2 * 4) + (4 * 4) + (2 * 8) + 96)
ahi sp,-ACJC_STACKFRAME /* allocate stack space */
stm %r2,%r5,96(sp) /* store volatile int arg regs */
std %f0,96+16(sp) /* store volatile float arg regs */
std %f2,96+24(sp)
- st %r14,96+32(sp) /* store return address */
+ st %r12,96+32(sp) /* store %r12, used as GOT pointer */
+ st %r14,96+36(sp) /* store return address */
/* load arguments */
- lr a0,itmp1 /* pass methodinfo pointer */
- lr a1,itmp2 /* pass method pointer */
+ lr a0,itmp3 /* pass methodinfo pointer */
+ lr a1,mptr /* pass method pointer */
la a2,ACJC_STACKFRAME(sp) /* pass java sp */
la a3,0(%r14) /* pass return address, make sure bit 32 is 0 */
- /* call jit_asm_compile in a PIC way */
-
- bras itmp2, L_bras_jac
- .long jit_asm_compile
-L_bras_jac:
- l itmp2, 0(itmp2)
- basr %r14, itmp2
+ CALL_PIC(jit_asm_compile, acjc)
lr pv, v0 /* save return value */
ltr pv,pv
je L_asm_call_jit_compiler_exception
- l %r14,96+32(sp) /* restore return address */
+ l %r12,96+32(sp) /* restore %r12 */
+ l %r14,96+36(sp) /* restore return address */
ahi sp, ACJC_STACKFRAME /* remove stack frame */
jit_code_entry: /* label to set breakpoint on */
L_asm_call_jit_compiler_exception:
- bras itmp2, L_bras_acjce
- .long exceptions_get_and_clear_exception
-L_bras_acjce:
- l itmp2, 0(itmp2)
- basr %r14, itmp2
+
+ CALL_PIC(exceptions_get_and_clear_exception, acjce)
+
lr xptr, %r2
- l xpc,96+32(sp) /* restore return address */
+ l xpc,96+36(sp) /* restore return address */
+ l %r12,96+32(sp) /* restore %r12 */
ahi sp, ACJC_STACKFRAME /* remove stack frame */
j L_asm_handle_nat_exception
-#if 0
/* asm_handle_exception ********************************************************
* *
* This function handles an exception. It does not use the usual calling *
* *
*******************************************************************************/
-#endif
-
asm_handle_nat_exception:
L_asm_handle_nat_exception:
/* TODO really nothing here ? */
asm_handle_exception:
-L_asm_handle_exception: /* required for PIC code */
-
- ahi sp, -(ARGUMENT_REGISTERS_SIZE + TEMPORARY_REGISTERS_SIZE) /* create maybe-leaf stackframe */
- STORE_ARGUMENT_REGISTERS(0)
- STORE_TEMPORARY_REGISTERS(ARGUMENT_REGISTERS_SIZE)
- lhi a3, (ARGUMENT_REGISTERS_SIZE + TEMPORARY_REGISTERS_SIZE) /* prepare a3 for handle_exception */
-
- lhi %r0, 1 /* set maybe-leaf flag */
-
-L_asm_handle_exception_stack_loop:
- ahi sp,-(6*4)
- st xptr,0*4(sp) /* save exception pointer */
- st xpc,1*4(sp) /* save exception pc */
- la a3,(6*4)(a3,sp) /* calculate Java sp into a3... */
- st a3,3*4(sp) /* ...and save it */
- st %r0,4*4(sp) /* save maybe-leaf flag */
-
- lr a0,xpc /* exception pc */
-
- ahi sp,-96 /* add register save area for C code */
-
- bras %r14,L_ahe_bras /* call codegen_get_pv_from_pc */
- .long codegen_get_pv_from_pc
-L_ahe_bras:
- l %r14,0(%r14)
- basr %r14,%r14
- st v0,2*4+96(sp) /* save data segment pointer */
-
- lr a2,v0 /* pass data segment pointer */
- l a0,0*4+96(sp) /* pass exception pointer */
- l a1,1*4+96(sp) /* pass exception pc */
- l a3,3*4+96(sp) /* pass Java stack pointer */
-
- bras %r14,L_ahe_bras2 /* call exceptions_handle_exception */
- .long exceptions_handle_exception
-L_ahe_bras2:
- l %r14,0(%r14)
- basr %r14,%r14
-
- ahi sp,96 /* remove regiser save area for C code */
-
- ltr v0,v0
- jz L_asm_handle_exception_not_catched
-
- lr xpc,v0 /* move handlerpc into xpc */
- l xptr,0*4(sp) /* restore exception pointer */
- l %r0,4*4(sp) /* get maybe-leaf flag */
- ahi sp,(6*4) /* free stack frame */
-
- ltr %r0, %r0
- jz L_asm_handle_exception_no_leaf
-
- LOAD_ARGUMENT_REGISTERS(0)
- LOAD_TEMPORARY_REGISTERS(ARGUMENT_REGISTERS_SIZE)
-
- ahi sp, (ARGUMENT_REGISTERS_SIZE + TEMPORARY_REGISTERS_SIZE) /* Remove maybe-leaf stackframe */
-
-L_asm_handle_exception_no_leaf:
- br xpc /* jump to the handler */
-
-L_asm_handle_exception_not_catched:
- l xptr,0*4(sp) /* restore exception pointer */
- l itmp3,2*4(sp) /* restore data segment pointer */
- ahi itmp3,-0xfff /* for negative displacements */
- l %r0,4*4(sp) /* get maybe-leaf flag */
- ahi sp,(6*4)
-
- ltr %r0,%r0
- jz L_asm_handle_exception_no_leaf_stack
-
- ahi sp, (ARGUMENT_REGISTERS_SIZE + TEMPORARY_REGISTERS_SIZE) /* Remove maybe-leaf stackframe */
- lhi %r0,0 /* clear the isleaf flags */
-
- /*
- +-----------------+-----------+---------+----+
- | Memuse | Float Sav | Int Sav | RA |
- | | 0 ... n | 0 ... n | |
- +-----------------+-----------+---------+----+
- ^ ^ ^
- SP F I
- */
-
-L_asm_handle_exception_no_leaf_stack:
-
- l itmp2,0xfff+FrameSize(itmp3)/* get frame size */
- la itmp2,0(itmp2,sp) /* pointer to save area */
- ahi itmp2,-4 /* skip RA */
-
- l a0,0xfff+IntSave(itmp3) /* a0 = saved int register count */
-
- ltr a0,a0
- je noint
-
- sll a0,2 /* a0 = saved int register count * 4 */
- sr itmp2, a0 /* skip Int Sav */
-
- chi a0,1*4
- je int1
- chi a0,2*4
- je int2
- chi a0,3*4
- je int3
- chi a0,4*4
- je int4
-
- l s0,0*4(itmp2)
-int4:
- l s1,1*4(itmp2)
-int3:
- l s2,2*4(itmp2)
-int2:
- l s3,3*4(itmp2)
-int1:
- l s4,4*4(itmp2)
-
-noint:
-
- l a0,0xfff+FltSave(itmp3)
- ltr a0,a0 /* Number of saved floating point registers */
- je noflt
-
- sll a0,3 /* Number of saved floating point registers * 8 */
- sr itmp2,a0
-
- chi a0,1*8
- je flt1
- chi a0,2*8
- je flt2
-
-flt2:
- ld %f6,1*8(itmp2)
-flt1:
- ld %f4,0*8(itmp2)
-
-noflt:
-
- l itmp3,0xfff+FrameSize(itmp3)/* get frame size (at least 4 - RA) */
- ahi itmp3,-4 /* substract 4 */
- l xpc,0(itmp3,sp) /* load the new xpc - return address */
- la sp, 4(itmp3,sp) /* unwind stack */
-
- /* exception pointer is still set */
-#if 0
- sub $3,xpc /* subtract 3 bytes for call */
-#endif
-
- lhi a3,0 /* prepare a3 for handle_exception */
+L_asm_handle_exception:
+
+ /* a wrapper for md_handle_exception */
+
+# define STACKFRAMESIZE (96 + (16 * 4) + (16 * 8) + (4 * 4))
+# define REGS 96
+# define FREGS (96 + (16 * 4))
+# define OUT (96 + (16 * 4) + (16 * 8))
+
+ ahi sp, -STACKFRAMESIZE /* allocate stack frame containing the arrays */
+
+ /* store special registers to array */
+
+ st xptr, REGS+(0*4)(sp)
+ st xpc, REGS+(1*4)(sp)
+ st pv, REGS+(13*4)(sp)
+ la itmp3, STACKFRAMESIZE(sp)
+ st itmp3, REGS+(15*4)(sp)
+
+ /* store temporary and argument registers */
+
+ stm a0, a4, REGS+(2*4)(sp)
+ std %f0, FREGS+(0*8)(sp)
+ std %f1, FREGS+(1*8)(sp)
+ std %f2, FREGS+(2*8)(sp)
+ std %f3, FREGS+(3*8)(sp)
+ std %f5, FREGS+(5*8)(sp)
+ std %f7, FREGS+(7*8)(sp)
+ std %f8, FREGS+(8*8)(sp)
+ std %f9, FREGS+(9*8)(sp)
+ std %f10, FREGS+(10*8)(sp)
+ std %f11, FREGS+(11*8)(sp)
+ std %f12, FREGS+(12*8)(sp)
+ std %f13, FREGS+(13*8)(sp)
+ std %f14, FREGS+(14*8)(sp)
+ std %f15, FREGS+(15*8)(sp)
+
+ /* store %r12 used as GOT */
- j L_asm_handle_exception_stack_loop
+ st %r12, REGS+(12*4)(sp)
+ /* call md_handle_exception */
-#if 0
+ la a0, REGS(sp)
+ la a1, FREGS(sp)
+ la a2, OUT(sp)
-/* asm_abstractmethoderror *****************************************************
+ CALL_PIC(md_handle_exception, ahe)
- Creates and throws an AbstractMethodError.
+ /* restore %r12 */
-*******************************************************************************/
+ l %r12, REGS+(12*4)(sp)
-asm_abstractmethoderror:
- mov sp,a0 /* pass java sp */
- add $1*8,a0
- mov 0*8(sp),a1 /* pass exception address */
- sub $3,a1
- call exceptions_asm_new_abstractmethoderror@PLT
- /* exception pointer is return value */
- pop xpc /* get exception address */
- sub $3,xpc /* exception address is ra - 3 */
- jmp L_asm_handle_exception
+ l itmp3, OUT+(2*4)(sp) /* out[2] contains maybe leaf flag */
+ ltr itmp3, itmp3
+ je L_restore_saved
-#endif
+L_restore_temporary_and_argument:
-/* asm_patcher_wrapper *********************************************************
+ /* if we are maybe leaf,
+ * we have to restore argument and temporary registers
+ */
- XXX
+ lm a0, a4, REGS+(2*4)(sp)
+ ld %f0, FREGS+(0*8)(sp)
+ ld %f1, FREGS+(1*8)(sp)
+ ld %f2, FREGS+(2*8)(sp)
+ ld %f3, FREGS+(3*8)(sp)
+ ld %f5, FREGS+(5*8)(sp)
+ ld %f7, FREGS+(7*8)(sp)
+ ld %f8, FREGS+(8*8)(sp)
+ ld %f9, FREGS+(9*8)(sp)
+ ld %f10, FREGS+(10*8)(sp)
+ ld %f11, FREGS+(11*8)(sp)
+ ld %f12, FREGS+(12*8)(sp)
+ ld %f13, FREGS+(13*8)(sp)
+ ld %f14, FREGS+(14*8)(sp)
+ ld %f15, FREGS+(15*8)(sp)
+
+ j L_restore_done
+
+L_restore_saved:
+
+ /* if we are not a maybe leaf,
+ * we have to restore callee saved registers of the callee
+ */
- Stack layout:
- 20 return address into JIT code (patch position)
- 16 pointer to virtual java_objectheader
- 12 machine code (which is patched back later)
- 8 unresolved class/method/field reference
- 4 data segment displacement from load instructions
- 0 patcher function pointer to call (pv afterwards)
+ l itmp3, OUT+(0*4)(sp) /* out[0] contains IntSav */
-*******************************************************************************/
+ ahi itmp3, -1
+ jl L_int_done
+ l s5, REGS+(12*4)(sp)
-asm_patcher_wrapper:
-# define apw_sfs (96 + 4 + VOLATILE_INTEGER_REGISTERS_SIZE + VOLATILE_FLOAT_REGISTERS_SIZE)
+ ahi itmp3, -1
+ jl L_int_done
+ l s4, REGS+(11*4)(sp)
- ahi sp, -apw_sfs /* create stack frame */
+ ahi itmp3, -1
+ jl L_int_done
+ l s3, REGS+(10*4)(sp)
- /* store all volatile registers and a2, because we will touch it */
+ ahi itmp3, -1
+ jl L_int_done
+ l s2, REGS+(9*4)(sp)
- st a2, 96(sp)
- STORE_VOLATILE_INTEGER_REGISTERS(96 + 4)
- STORE_VOLATILE_FLOAT_REGISTERS(96 + 4 + VOLATILE_INTEGER_REGISTERS_SIZE)
+ ahi itmp3, -1
+ jl L_int_done
+ l s1, REGS+(8*4)(sp)
- /* pass arguments */
+ ahi itmp3, -1
+ jl L_int_done
+ l s0, REGS+(7*4)(sp)
- la a0, apw_sfs(sp) /* pass SP of patcher stub */
- lr a1, pv /* pass PV (if NULL, use findmethod) */
- lhi a2, 0 /* pass RA */
+L_int_done:
- /* call patcher_wrapper */
+ /* restore callee saved float registers */
- bras itmp1, L_apw_bras /* call patcher_wrapper */
- .long patcher_wrapper
-L_apw_bras:
- l itmp1, 0(itmp1)
- basr %r14, itmp1
+ /* there are currently none */
- /* store return value */
+L_flt_done:
- st v0,0(sp) /* save return value */
+L_restore_done:
- /* restore volatile registers */
+ /* write new values for special registers */
- l a2, 96(sp)
- LOAD_VOLATILE_INTEGER_REGISTERS(96 + 4)
- LOAD_VOLATILE_FLOAT_REGISTERS(96 + 4 + VOLATILE_INTEGER_REGISTERS_SIZE)
+ l xptr, REGS+(0*4)(sp)
+ l xpc, REGS+(1*4)(sp)
+ l pv, REGS+(13*4)(sp)
+ l sp, REGS+(15*4)(sp)
- l itmp3, 0(sp) /* restore return value */
- ltr itmp3, itmp3 /* exception thrown ? */
- jne L_asm_patcher_wrapper_exception /* handle exception */
- l itmp3, apw_sfs + (5 * 4)(sp) /* load return address to JIT from stack */
- ahi sp, apw_sfs + (6 * 4) /* remove stack frame, and stack frame by patcher stub */
- br itmp3 /* return */
+ br xpc /* jump to handler */
-L_asm_patcher_wrapper_exception:
- lr xptr,itmp3 /* get exception */
- l xpc, apw_sfs + (5 * 4)(sp) /* load return address to JIT from stack */
- ahi sp, apw_sfs + (6 * 4) /* remove stack frame, and stack frame by patcher stub */
- j L_asm_handle_exception
+# undef STACKFRAMESIZE
+# undef REGS
+# undef FREGS
+# undef OUT
#if 0
-/* asm_replacement_out *********************************************************
-
- This code is jumped to from the replacement-out stubs that are executed
- when a thread reaches an activated replacement point.
-
- The purpose of asm_replacement_out is to read out the parts of the
- execution state that cannot be accessed from C code, store this state,
- and then call the C function replace_me.
-
- Stack layout:
- 8 start of stack inside method to replace
- 0 rplpoint * info on the replacement point that was reached
-
-*******************************************************************************/
-
-/* some room to accomodate changes of the stack frame size during replacement */
- /* XXX we should find a cleaner solution here */
-#define REPLACEMENT_ROOM 512
-
-asm_replacement_out:
- /* create stack frame */
- sub $(sizeexecutionstate + REPLACEMENT_ROOM),sp
-
- /* save registers in execution state */
- mov %rax,(RAX*8+offes_intregs)(sp)
- mov %rbx,(RBX*8+offes_intregs)(sp)
- mov %rcx,(RCX*8+offes_intregs)(sp)
- mov %rdx,(RDX*8+offes_intregs)(sp)
- mov %rsi,(RSI*8+offes_intregs)(sp)
- mov %rdi,(RDI*8+offes_intregs)(sp)
- mov %rbp,(RBP*8+offes_intregs)(sp)
- movq $0 ,(RSP*8+offes_intregs)(sp) /* not used */
- mov %r8 ,(R8 *8+offes_intregs)(sp)
- mov %r9 ,(R9 *8+offes_intregs)(sp)
- mov %r10,(R10*8+offes_intregs)(sp)
- mov %r11,(R11*8+offes_intregs)(sp)
- mov %r12,(R12*8+offes_intregs)(sp)
- mov %r13,(R13*8+offes_intregs)(sp)
- mov %r14,(R14*8+offes_intregs)(sp)
- mov %r15,(R15*8+offes_intregs)(sp)
-
- movq %xmm0 ,(XMM0 *8+offes_fltregs)(sp)
- movq %xmm1 ,(XMM1 *8+offes_fltregs)(sp)
- movq %xmm2 ,(XMM2 *8+offes_fltregs)(sp)
- movq %xmm3 ,(XMM3 *8+offes_fltregs)(sp)
- movq %xmm4 ,(XMM4 *8+offes_fltregs)(sp)
- movq %xmm5 ,(XMM5 *8+offes_fltregs)(sp)
- movq %xmm6 ,(XMM6 *8+offes_fltregs)(sp)
- movq %xmm7 ,(XMM7 *8+offes_fltregs)(sp)
- movq %xmm8 ,(XMM8 *8+offes_fltregs)(sp)
- movq %xmm9 ,(XMM9 *8+offes_fltregs)(sp)
- movq %xmm10,(XMM10*8+offes_fltregs)(sp)
- movq %xmm11,(XMM11*8+offes_fltregs)(sp)
- movq %xmm12,(XMM12*8+offes_fltregs)(sp)
- movq %xmm13,(XMM13*8+offes_fltregs)(sp)
- movq %xmm14,(XMM14*8+offes_fltregs)(sp)
- movq %xmm15,(XMM15*8+offes_fltregs)(sp)
-
- /* calculate sp of method */
- mov sp,itmp1
- add $(sizeexecutionstate + REPLACEMENT_ROOM + 8),itmp1
- mov itmp1,(offes_sp)(sp)
-
- /* pv must be looked up via AVL tree */
- movq $0,(offes_pv)(sp)
-
- /* call replace_me */
- mov -8(itmp1),a0 /* rplpoint * */
- mov sp,a1 /* arg1: execution state */
- call replace_me@PLT /* call C function replace_me */
- call abort@PLT /* NEVER REACHED */
-
-/* asm_replacement_in **********************************************************
-
- This code writes the given execution state and jumps to the replacement
- code.
-
- This function never returns!
-
- C prototype:
- void asm_replacement_in(executionstate *es);
-
-*******************************************************************************/
+/* asm_abstractmethoderror *****************************************************
-asm_replacement_in:
- mov a0,%rbp /* executionstate *es */
+ Creates and throws an AbstractMethodError.
- /* set new sp */
- mov (offes_sp)(%rbp),%rsp
-
- /* store address of new code */
- push (offes_pc)(%rbp)
-
- /* copy registers from execution state */
- movq (XMM0 *8+offes_fltregs)(%rbp),%xmm0
- movq (XMM1 *8+offes_fltregs)(%rbp),%xmm1
- movq (XMM2 *8+offes_fltregs)(%rbp),%xmm2
- movq (XMM3 *8+offes_fltregs)(%rbp),%xmm3
- movq (XMM4 *8+offes_fltregs)(%rbp),%xmm4
- movq (XMM5 *8+offes_fltregs)(%rbp),%xmm5
- movq (XMM6 *8+offes_fltregs)(%rbp),%xmm6
- movq (XMM7 *8+offes_fltregs)(%rbp),%xmm7
- movq (XMM8 *8+offes_fltregs)(%rbp),%xmm8
- movq (XMM9 *8+offes_fltregs)(%rbp),%xmm9
- movq (XMM10*8+offes_fltregs)(%rbp),%xmm10
- movq (XMM11*8+offes_fltregs)(%rbp),%xmm11
- movq (XMM12*8+offes_fltregs)(%rbp),%xmm12
- movq (XMM13*8+offes_fltregs)(%rbp),%xmm13
- movq (XMM14*8+offes_fltregs)(%rbp),%xmm14
- movq (XMM15*8+offes_fltregs)(%rbp),%xmm15
-
- mov (RAX*8+offes_intregs)(%rbp),%rax
- mov (RBX*8+offes_intregs)(%rbp),%rbx
- mov (RCX*8+offes_intregs)(%rbp),%rcx
- mov (RDX*8+offes_intregs)(%rbp),%rdx
- mov (RSI*8+offes_intregs)(%rbp),%rsi
- mov (RDI*8+offes_intregs)(%rbp),%rdi
- mov (R8 *8+offes_intregs)(%rbp),%r8
- mov (R9 *8+offes_intregs)(%rbp),%r9
- mov (R10*8+offes_intregs)(%rbp),%r10
- mov (R11*8+offes_intregs)(%rbp),%r11
- mov (R12*8+offes_intregs)(%rbp),%r12
- mov (R13*8+offes_intregs)(%rbp),%r13
- mov (R14*8+offes_intregs)(%rbp),%r14
- mov (R15*8+offes_intregs)(%rbp),%r15
-
- mov (RBP*8+offes_intregs)(%rbp),%rbp
-
- /* jump to new code */
- ret
-
-
-/* asm_builtin_x2x *************************************************************
-* *
-* Wrapper functions for float to int corner cases *
-* *
*******************************************************************************/
-asm_builtin_f2i:
- sub $(ARG_CNT*8),sp
-
- SAVE_ARGUMENT_REGISTERS(0)
-
- movq ftmp1,fa0
- call builtin_f2i@PLT
-
- RESTORE_ARGUMENT_REGISTERS(0)
-
- add $(ARG_CNT*8),sp
- ret
-
-
-asm_builtin_f2l:
- sub $(ARG_CNT*8),sp
-
- SAVE_ARGUMENT_REGISTERS(0)
-
- movq ftmp1,fa0
- call builtin_f2l@PLT
-
- RESTORE_ARGUMENT_REGISTERS(0)
-
- add $(ARG_CNT*8),sp
- ret
-
-
-asm_builtin_d2i:
- sub $(ARG_CNT*8),sp
-
- SAVE_ARGUMENT_REGISTERS(0)
-
- movq ftmp1,fa0
- call builtin_d2i@PLT
-
- RESTORE_ARGUMENT_REGISTERS(0)
-
- add $(ARG_CNT*8),sp
- ret
-
+asm_abstractmethoderror:
+ mov sp,a0 /* pass java sp */
+ add $1*8,a0
+ mov 0*8(sp),a1 /* pass exception address */
+ sub $3,a1
+ call exceptions_asm_new_abstractmethoderror@PLT
+ /* exception pointer is return value */
+ pop xpc /* get exception address */
+ sub $3,xpc /* exception address is ra - 3 */
+ jmp L_asm_handle_exception
-asm_builtin_d2l:
- sub $(ARG_CNT*8),sp
-
- SAVE_ARGUMENT_REGISTERS(0)
-
- movq ftmp1,fa0
- call builtin_d2l@PLT
-
- RESTORE_ARGUMENT_REGISTERS(0)
-
- add $(ARG_CNT*8),sp
- ret
-
-#endif /* if 0 */
-
-/* TODO use move here ? */
-
-asm_getclassvalues_atomic:
-_crit_restart:
-_crit_begin:
- l %r0,offbaseval(a0)
- l %r1,offdiffval(a0)
- l a3,offbaseval(a1)
-_crit_end:
- st %r0,offcast_super_baseval(a2)
- st %r1,offcast_super_diffval(a2)
- st a3,offcast_sub_baseval(a2)
- br %r14
-
- .data
-
-asm_criticalsections:
-#if defined(ENABLE_THREADS)
- .long _crit_begin
- .long _crit_end
- .long _crit_restart
#endif
- .long 0
+/* Offset table for PIC calls, see CALL_PIC */
-/* Disable exec-stacks, required for Gentoo ***********************************/
-
-#if 0
-
-#if defined(__GCC__) && defined(__ELF__)
- .section .note.GNU-stack,"",@progbits
-#endif
-
+L_offsets:
+ .long _GLOBAL_OFFSET_TABLE_ - L_offsets
+L_offset_builtin_throw_exception:
+ .long builtin_throw_exception@PLTOFF
+L_offset_jit_asm_compile:
+ .long jit_asm_compile@PLTOFF
+L_offset_exceptions_get_and_clear_exception:
+ .long exceptions_get_and_clear_exception@PLTOFF
+L_offset_md_handle_exception:
+ .long md_handle_exception@PLTOFF
-#endif /* if 0 */
/*
* These are local overrides for various environment variables in Emacs.
projects / cacao.git / blobdiff