/* src/vm/jit/i386/asmpart.S - Java-C interface functions for i386
- Copyright (C) 1996-2005 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
+ Copyright (C) 1996-2005, 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA.
-
- Contact: cacao@complang.tuwien.ac.at
-
- Authors: Andreas Krall
- Reinhard Grafl
- Christian Thalinger
-
- Changes: Joseph Wenninger
-
- $Id: asmpart.S 3894 2005-12-06 22:30:30Z twisti $
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
*/
#include "config.h"
-#include "vm/jit/i386/offsets.h"
-
-#include "vm/jit/methodheader.h"
-
-
-/* define it like the risc way */
-
-#define v0 %eax
-
-#define sp %esp
-#define bp %ebp
-#define itmp1 %eax
-#define itmp2 %ecx
-#define itmp3 %edx
+#include "md-asm.h"
-#define itmp1b %al
-#define itmp2b %cl
-#define itmp3b %dl
+#include "vm/jit/i386/arch.h"
+#include "vm/jit/i386/md-abi.h"
-#define xptr itmp1
-#define xpc itmp2
+#include "vm/jit/abi-asm.h"
+#include "vm/jit/methodheader.h"
.text
-/********************* exported functions and variables ***********************/
+/* export functions ***********************************************************/
- .globl asm_calljavafunction
- .globl asm_calljavafunction_int
+ .globl asm_md_init
- .globl asm_calljavafunction2
- .globl asm_calljavafunction2int
- .globl asm_calljavafunction2long
- .globl asm_calljavafunction2float
- .globl asm_calljavafunction2double
+ .globl asm_vm_call_method
+ .globl asm_vm_call_method_int
+ .globl asm_vm_call_method_long
+ .globl asm_vm_call_method_float
+ .globl asm_vm_call_method_double
+ .globl asm_vm_call_method_exception_handler
+ .globl asm_vm_call_method_end
- .globl asm_call_jit_compiler
.globl asm_handle_nat_exception
.globl asm_handle_exception
- .globl asm_wrapper_patcher
+ .globl asm_abstractmethoderror
.globl asm_builtin_f2i
.globl asm_builtin_f2l
.globl asm_builtin_d2i
.globl asm_builtin_d2l
- .globl asm_perform_threadswitch
- .globl asm_initialize_thread_stack
- .globl asm_switchstackandcall
- .globl asm_criticalsections
- .globl asm_getclassvalues_atomic
-
+ .globl asm_compare_and_swap
+ .globl asm_memory_barrier
-/********************* function asm_calljavafunction ***************************
-* *
-* This function calls a Java-method (which possibly needs compilation) *
-* with up to 4 address parameters. *
-* *
-* This functions calls the JIT-compiler which eventually translates the *
-* method into machine code. *
-* *
-* C-prototype: *
-* javaobject_header *asm_calljavamethod (methodinfo *m, *
-* void *arg1, void *arg2, void *arg3, void *arg4); *
-* *
-*******************************************************************************/
+#if defined(ENABLE_ESCAPE_CHECK)
+ .globl asm_escape_check
+#endif
-call_name:
- .align 8
- .long 0 /* catch type all */
- .long calljava_xhandler /* handler pc */
- .long calljava_xhandler /* end pc */
- .long asm_calljavafunction /* 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 32 /* frame size */
- .long 0 /* method pointer (pointer to name) */
-
-asm_calljavafunction:
-asm_calljavafunction_int:
- push %ebp /* allocate stack space */
- mov %esp, %ebp
-
- push %ebx /* save registers */
- push %esi
- push %edi
-
-
- sub $16,%esp /* 4 adress parameters * 4 Bytes */
- mov 24(%ebp),%eax /* copy adress parameters to new block*/
- mov %eax,12(%esp)
-
- mov 20(%ebp),%eax
- mov %eax,8(%esp)
+/* asm_md_init *****************************************************************
- mov 16(%ebp),%eax
- mov %eax,4(%esp)
+ Initialize machine dependent stuff.
- mov 12(%ebp),%eax
- mov %eax,(%esp)
-
- mov 8(%ebp),%eax /* move function pointer to %eax */
+ See: http://www.srware.com/linux_numerics.txt
- lea asm_call_jit_compiler,%edx
- call *%edx /* call JIT compiler */
+ This puts the X86 FPU in 64-bit precision mode. The default under
+ Linux is to use 80-bit mode, which produces subtle differences from
+ FreeBSD and other systems, eg, (int)(1000*atof("0.3")) is 300 in
+ 64-bit mode, 299 in 80-bit mode.
- add $16,%esp
- pop %edi /* restore registers */
- pop %esi
- pop %ebx
- leave
- ret
+ Fixes: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=350729
-calljava_xhandler:
- push %eax /* pass exception pointer */
- call builtin_throw_exception
- add $4,%esp
+*******************************************************************************/
- add $16,%esp
- pop %edi /* restore registers */
- pop %esi
- pop %ebx
- leave
- xor v0,v0 /* return NULL */
+asm_md_init:
+ sub $4,sp /* allocate space for the FPU state */
+ fnstcw (sp) /* get the FPU state */
+ mov (sp),%eax
+ and $0xfcff,%ax /* remove the extended mode flag */
+ or $0x0200,%ax /* put the double mode flag */
+ mov %eax,(sp) /* store new FPU state */
+ fldcw (sp) /* setup new FPU state */
+ add $4,sp
ret
* method into machine code. *
* *
* C-prototype: *
-* javaobject_header *asm_calljavafunction2(methodinfo *m, *
+* javaobject_header *asm_vm_call_method(methodinfo *m, *
* u4 count, u4 size, void *callblock); *
* *
*******************************************************************************/
-call_name2:
.align 8
- .long 0 /* catch type all */
- .long calljava_xhandler2 /* handler pc */
- .long calljava_xhandler2 /* end pc */
- .long asm_calljavafunction2 /* 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 32 /* frame size */
- .long 0 /* method pointer (pointer to name) */
-
-asm_calljavafunction2:
-asm_calljavafunction2int:
-asm_calljavafunction2long:
-asm_calljavafunction2float:
-asm_calljavafunction2double:
- push %ebp
- mov %esp,%ebp /* save stackptr */
-
- push %ebx /* save registers */
- push %esi
- push %edi
-
- mov 20(%ebp),%eax /* pointer to arg block (4(push)+4(return)+4+4+4)*/
- mov 12(%ebp),%ecx /* arg count (4(push)+4(return)+4 */
-
- xor %esi,%esi /* clear stackframe size (MUST be */
- /* before args check, may be zero!!!) */
- test %ecx,%ecx /* maybe we have no args */
- jle calljava_copydone
-
- mov %ecx,%edx /* calculate stack size */
- mov %eax,%edi /* save pointer to arg block */
-
-calljava_calcstacksize:
- mov offjniitemtype(%eax),%ebx
- test $1,%ebx /* two word type? */
- jz calljava_onewordtype
- add $4,%esi /* add 1 slot to stackframe size */
-
-calljava_onewordtype:
- add $4,%esi /* add 1 slot to stackframe size */
- sub $1,%edx
- test %edx,%edx /* any args left? */
- jz calljava_setstack
- add $sizejniblock,%eax /* goto next argument block */
- jmp calljava_calcstacksize
-
-calljava_setstack:
- mov %edi,%eax /* restore pointer to arg block */
- sub %esi,%esp /* create stackframe for arguments */
- mov %esp,%edi /* move stackpointer into temp variable */
-
-calljava_copyloop:
- mov offjniitem(%eax),%edx /* copy 4 Byte of Argument */
- mov %edx,(%edi)
- add $4,%edi /* increase sp to next argument */
- mov offjniitemtype(%eax),%ebx /* type -> ebx */
- test $1,%ebx /* Two Word Type? */
- jz calljava_copynext
-
- mov offjniitem+4(%eax),%edx /* copy upper 4 Byte of 2 Word Type */
- mov %edx,(%edi)
- add $4,%edi /* increase sp to next argument */
-
-calljava_copynext:
- sub $1,%ecx /* are there any args left? */
- test %ecx,%ecx
- jle calljava_copydone
-
- add $sizejniblock,%eax /* goto next argument block */
- jmp calljava_copyloop
-
-calljava_copydone:
- mov 8(%ebp),%eax /* move function pointer to %eax */
-
- lea asm_call_jit_compiler,%edx
- call *%edx /* call JIT compiler */
-
- add %esi,%esp /* remove arg stack frame */
- pop %edi /* restore registers */
- pop %esi
- pop %ebx
- leave
- ret
+ .long 0 /* fltsave */
+ .long 0 /* intsave */
+ .long 0 /* isleaf */
+ .long 0 /* frame size */
+ .long 0 /* codeinfo pointer */
+
+asm_vm_call_method:
+asm_vm_call_method_int:
+asm_vm_call_method_long:
+asm_vm_call_method_float:
+asm_vm_call_method_double:
+ push bp
+ mov sp,bp /* save stack pointer */
+ sub $(4*4),sp /* create stackframe */
+ and $0xfffffff0,sp /* align stack to 16-byte */
+
+ mov t0,0*4(sp) /* save registers */
+ mov s1,1*4(sp)
+ mov s2,2*4(sp)
+
+ mov sp,s1 /* save stack pointer */
+
+ mov 3*4(bp),t0 /* address of data structure */
+ mov 4*4(bp),itmp1 /* number of stack arguments */
+
+ cmp $0,itmp1
+ je L_asm_vm_call_method_stack_copy_done
+
+ mov itmp1,itmp2
+ add $1,itmp2 /* keep stack 16-byte aligned */
+ and $0xfffffffe,itmp2
+ shl $3,itmp2 /* calculate stack size */
+ sub itmp2,sp /* create stack frame */
+ mov sp,itmp2 /* temporary stack pointer */
+
+L_asm_vm_call_method_stack_copy_loop:
+ mov 0(t0),itmp3 /* load argument */
+ mov itmp3,0(itmp2) /* store argument on stack */
+ mov 4(t0),itmp3
+ mov itmp3,4(itmp2)
+
+ sub $1,itmp1 /* subtract 1 argument */
+ add $8,t0 /* set address of next argument */
+ add $8,itmp2 /* increase SP */
+
+ cmp $0,itmp1
+ jg L_asm_vm_call_method_stack_copy_loop
+
+L_asm_vm_call_method_stack_copy_done:
+ lea (2*4-256)(bp),mptr /* We subtract 256 to force the next */
+ /* move instruction to have a 32-bit */
+ /* offset. */
+
+ mov (0*4+256)(mptr),itmp3 /* method call as in Java */
+ call *itmp3 /* call JIT compiler */
+
+L_asm_vm_call_method_return:
+ mov s1,sp /* restore stackpointer */
+
+ mov 0*4(sp),t0 /* restore registers */
+ mov 1*4(sp),s1
+ mov 2*4(sp),s2
-calljava_xhandler2:
- push xptr /* pass exception pointer */
- call builtin_throw_exception
- add $4,%esp
-
- add %esi,%esp /* remove arg stack frame */
- pop %edi /* restore registers */
- pop %esi
- pop %ebx
leave
- xor v0,v0 /* return NULL */
ret
-
-/****************** function asm_call_jit_compiler *****************************
-* *
-* invokes the compiler for untranslated JavaVM methods. *
-* *
-* Register R0 contains a pointer to the method info structure (prepared *
-* by createcompilerstub). Using the return address in R26 and the *
-* offset in the LDA instruction or using the value in methodptr R28 the *
-* patching address for storing the method address can be computed: *
-* *
-* method address was either loaded using *
-* *
-* i386_mov_imm_reg(a, REG_ITMP2) ; invokestatic/special *
-* i386_call_reg(REG_ITMP2) *
-* *
-* or *
-* *
-* i386_mov_membase_reg(REG_SP, 0, REG_ITMP1) ; invokevirtual/interface *
-* i386_mov_membase_reg(REG_ITMP1, OFFSET(, vftbl), REG_ITMP2) *
-* i386_mov_membase_reg(REG_ITMP2, OFFSET(vftbl, table[0]) + \ *
-* sizeof(methodptr) * m->vftblindex, REG_ITMP1) *
-* i386_call_reg(REG_ITMP1) *
-* *
-* in the static case the method pointer can be computed using the *
-* return address and the lda function following the jmp instruction *
-* *
-*******************************************************************************/
-
-asm_call_jit_compiler:
- sub $((4+2)*4+sizestackframeinfo),sp /* create stack frame */
- mov itmp1,(4+0)*4(sp) /* save method pointer */
-
- mov (4+2)*4+sizestackframeinfo(sp),itmp3 /* get return address */
- mov -1(itmp3),itmp1b /* get function code */
- cmp $0xd1,itmp1b /* called with `call *REG_ITMP2'? */
- jne L_not_static_special
-
- sub $6,itmp3 /* calculate address of immediate */
- jmp L_call_jit_compile
-
-L_not_static_special:
- cmp $0xd0,itmp1b /* called with `call *REG_ITMP1' */
- jne L_not_virtual_interface
-
- sub $6,itmp3 /* calculate address of offset */
- mov (itmp3),itmp3 /* get offset */
- add itmp2,itmp3 /* add base address to get method adr */
- jmp L_call_jit_compile
-
-L_not_virtual_interface:
- xor itmp3,itmp3 /* a call from asm_calljavafunction */
-
-L_call_jit_compile:
- mov itmp3,(4+1)*4(sp) /* save address for method pointer */
-
- mov sp,itmp1 /* create stackframe info */
- add $((4+2)*4),itmp1
- mov itmp1,0*4(sp) /* stackframeinfo pointer */
- movl $0,1*4(sp) /* if pv is NULL, use findmethod */
- mov sp,itmp2
- add $((1+4+2)*4+sizestackframeinfo),itmp2 /* pass java sp */
- mov itmp2,2*4(sp)
- mov ((0+4+2)*4+sizestackframeinfo)(sp),itmp3 /* pass java ra */
- mov itmp3,3*4(sp)
- call stacktrace_create_inline_stackframeinfo
-
- mov (4+0)*4(sp),itmp1 /* pass method pointer */
- mov itmp1,0*4(sp)
- call jit_compile
- mov v0,(4+0)*4(sp) /* save return value */
-
- mov sp,itmp1 /* remove stackframe info */
- add $((4+2)*4),itmp1
- mov itmp1,0*4(sp) /* stackframeinfo pointer */
- call stacktrace_remove_stackframeinfo
-
- mov (4+0)*4(sp),v0 /* restore return value */
- mov (4+1)*4(sp),itmp3 /* restore address for method pointer */
-
- add $((4+2)*4+sizestackframeinfo),sp /* remove stack frame */
-
- test v0,v0 /* check for exception */
- je L_asm_call_jit_compiler_exception
-
- test itmp3,itmp3 /* was this a JIT call? */
- je L_call_method
-
- mov v0,(itmp3) /* save the new method pointer */
-
-L_call_method:
- jmp *v0 /* ...and now call the new method */
-
-L_asm_call_jit_compiler_exception:
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- call builtin_asm_get_exceptionptrptr
- mov v0,itmp2 /* v0 == itmp1 */
+asm_vm_call_method_exception_handler:
+#if defined(ENABLE_PIC_ASM)
+ sub $12, %esp
+ push %ebx
+#endif
+ push xptr /* pass exception pointer */
+#if defined(ENABLE_PIC_ASM)
+ call .GETPC
+ add $_GLOBAL_OFFSET_TABLE_, %ebx
+ call builtin_throw_exception@PLT
+ pop %ebx
+ add $12, %esp
#else
- lea _exceptionptr,itmp2
+ call builtin_throw_exception
#endif
- mov (itmp2),xptr /* get the exception pointer */
- movl $0,(itmp2) /* clear the exception pointer */
-
- pop xpc /* get return address */
- sub $2,xpc /* faulting address is ra - 2 */
- jmp asm_handle_exception
+ add $4,sp
+asm_vm_call_method_end:
+ jmp L_asm_vm_call_method_return
/* asm_handle_exception ********************************************************
add $4,sp /* clear return address of native stub*/
asm_handle_exception:
-#if 0
- xor %edi,%edi /* clear indent flag (only first time)*/
-#endif
+L_asm_handle_exception: /* required for PIC code */
+ sub $((ARG_CNT+TMP_CNT+3)*4),sp /* keep stack 16-byte aligned */
+
+ SAVE_ARGUMENT_REGISTERS(0) /* we save arg and temp registers in */
+ SAVE_TEMPORARY_REGISTERS(ARG_CNT) /* case this is a leaf method */
+
+ mov $((ARG_CNT+TMP_CNT+3)*4),itmp3 /* prepare a3 for handle_exception */
+ mov $1,t0 /* set maybe-leaf flag */
L_asm_handle_exception_stack_loop:
- sub $(10*4),sp /* create stackframe */
+ sub $(12*4),sp /* keep stack 16-byte aligned */
mov xptr,4*4(sp) /* save exception pointer */
mov xpc,5*4(sp) /* save exception pc */
-
-#if 0
- mov %ebx,7*4(sp) /* save registers (non-callee) */
- mov %ebp,8*4(sp)
-#endif
+ add sp,itmp3 /* calculate Java sp into a3... */
+ add $(12*4),itmp3
+ mov itmp3,7*4(sp) /* ...and save it */
+ mov t0,8*4(sp) /* save maybe-leaf flag */
mov xpc,0*4(sp) /* pass exception pc */
- call codegen_findmethod
+#if defined(ENABLE_PIC_ASM)
+ call .GETPC
+ add $_GLOBAL_OFFSET_TABLE_, %ebx
+ call methodtree_find@PLT
+#else
+ call methodtree_find
+#endif
mov v0,6*4(sp) /* save data segment pointer */
mov 4*4(sp),itmp3 /* pass exception pointer */
mov 5*4(sp),itmp3 /* pass exception pc */
mov itmp3,1*4(sp)
mov v0,2*4(sp) /* pass data segment pointer */
- mov sp,itmp3 /* pass Java stack pointer */
- add $(10*4),itmp3
+ mov 7*4(sp),itmp3 /* pass Java stack pointer */
mov itmp3,3*4(sp)
+#if defined(ENABLE_PIC_ASM)
+ /* GOT still in %ebx */
+ call exceptions_handle_exception@PLT
+#else
call exceptions_handle_exception
+#endif
test v0,v0
jz L_asm_handle_exception_not_catched
mov v0,xpc /* move handlerpc into xpc */
mov 4*4(sp),xptr /* restore exception pointer */
-#if 0
- mov 7*4(sp),%ebx /* restore registers (non-callee) */
- mov 8*4(sp),%ebp
-#endif
- add $(10*4),sp /* free stackframe */
+ mov 8*4(sp),t0 /* get maybe-leaf flag */
+ add $(12*4),sp /* free stackframe */
+ test t0,t0 /* test for maybe-leaf flag */
+ jz L_asm_handle_exception_no_leaf
+
+ RESTORE_ARGUMENT_REGISTERS(0) /* if this is a leaf method, we have */
+ RESTORE_TEMPORARY_REGISTERS(ARG_CNT)/* to restore arg and temp registers */
+
+ add $((ARG_CNT+TMP_CNT+3)*4),sp /* remove maybe-leaf stackframe */
+
+L_asm_handle_exception_no_leaf:
jmp *xpc /* jump to exception handler */
L_asm_handle_exception_not_catched:
mov 4*4(sp),xptr /* restore exception pointer */
mov 6*4(sp),itmp3 /* restore data segment pointer */
-#if 0
- mov 7*4(sp),%ebx /* restore registers (non-callee) */
- mov 8*4(sp),%ebp
-#endif
- add $(10*4),sp /* free stackframe */
+ mov 8*4(sp),t0 /* get maybe-leaf flag */
+ add $(12*4),sp /* free stackframe */
+ test t0,t0
+ jz L_asm_handle_exception_no_leaf_stack
+
+ add $((ARG_CNT+TMP_CNT+3)*4),sp /* remove maybe-leaf stackframe */
+ xor t0,t0 /* clear the maybe-leaf flag */
+
+L_asm_handle_exception_no_leaf_stack:
mov FrameSize(itmp3),itmp2 /* get frame size */
- add itmp2,sp /* unwind stack */
- mov sp,itmp2 /* pointer to save area */
+ add sp,itmp2 /* pointer to save area */
- mov IntSave(itmp3),%ebx /* %ecx = saved int register count */
- test %ebx,%ebx
+ push xptr /* we are out of registers */
+
+ mov IntSave(itmp3),itmp1 /* itmp1 = saved int register count */
+ test itmp1,itmp1
je noint
- cmp $1,%ebx
+ cmp $1,itmp1
je int1
- cmp $2,%ebx
+ cmp $2,itmp1
je int2
- mov -12(itmp2),%ebp
+ mov -4-3*8(itmp2),s0
int2:
- mov -8(itmp2),%esi
+ mov -4-2*8(itmp2),s1
int1:
- mov -4(itmp2),%edi
+ mov -4-1*8(itmp2),s2
- shl $2,%ebx /* multiply by 4 bytes */
- sub %ebx,itmp2
+ shl $2,itmp1 /* multiply by 4 bytes */
+ sub itmp1,itmp2
noint:
- mov FltSave(itmp3),%ebx /* %ecx = saved flt register count */
- test %ebx,%ebx
+#if 0
+ mov FltSave(itmp3),itmp1 /* itmp1 = saved flt register count */
+ test itmp1,itmp1
je noflt
- cmp $1,%ebx
+ cmp $1,itmp1
je flt1
- cmp $2,%ebx
+ cmp $2,itmp1
je flt2
- cmp $3,%ebx
+ cmp $3,itmp1
je flt3
- fldl -32(itmp2)
+ fldl -4*8(itmp2)
fstp %st(1)
flt3:
- fldl -24(itmp2)
+ fldl -3*8(itmp2)
fstp %st(2)
flt2:
- fldl -16(itmp2)
+ fldl -2*8(itmp2)
fstp %st(3)
flt1:
- fldl -8(itmp2)
+ fldl -1*8(itmp2)
fstp %st(4)
noflt:
- /* exception pointer is still set */
+#endif
+ pop xptr /* restore exception pointer */
+ mov FrameSize(itmp3),itmp2 /* get frame size */
+ add itmp2,sp /* unwind stack */
+
pop xpc /* the new xpc is return address */
sub $2,xpc /* subtract 2-bytes for call */
-#if 0
- mov $1,%edi /* set indent flag */
-#endif
+ xor itmp3,itmp3 /* prepare a3 for handle_exception */
jmp L_asm_handle_exception_stack_loop
-/* asm_wrapper_patcher *********************************************************
-
- XXX
+/* asm_abstractmethoderror *****************************************************
- Stack layout:
- 20 return address
- 16 pointer to virtual java_objectheader
- 12 last byte of machine code (xmcode)
- 8 machine code (which is patched back later)
- 4 unresolved field reference
- 0 patcher function pointer to call
+ Creates and throws an AbstractMethodError.
*******************************************************************************/
-asm_wrapper_patcher:
- sub $((2+4)*4+sizestackframeinfo),sp /* create stack frame */
-
- mov itmp1,(0+4)*4(sp) /* save itmp1 and itmp2 */
- mov itmp2,(1+4)*4(sp) /* may be used by some instructions */
-
- mov sp,itmp1 /* create stackframe info */
- add $((2+4)*4),itmp1
- mov itmp1,0*4(sp) /* stackframeinfo pointer */
- movl $0,1*4(sp) /* if pv is NULL, use findmethod */
- mov sp,itmp2
- add $((6+2+4)*4+sizestackframeinfo),itmp2
- mov itmp2,2*4(sp)
- mov ((5+2+4)*4+sizestackframeinfo)(sp),itmp3
- mov itmp3,3*4(sp)
- call stacktrace_create_inline_stackframeinfo
-
- mov sp,itmp1 /* pass stack pointer */
- add $((1+2+4)*4+sizestackframeinfo),itmp1 /* skip function pointer */
+asm_abstractmethoderror:
+ sub $(3*4),sp /* keep stack 16-byte aligned */
+ mov sp,itmp1 /* pass java sp */
+ add $((1+3)*4),itmp1
mov itmp1,0*4(sp)
- mov (0+2+4)*4+sizestackframeinfo(sp),itmp1 /* get function pointer */
- call *itmp1 /* call the patcher function */
- mov v0,1*4(sp) /* save return value */
-
- mov sp,itmp1 /* remove stackframe info */
- add $((2+4)*4),itmp1
- mov itmp1,0*4(sp) /* stackframeinfo pointer */
- call stacktrace_remove_stackframeinfo
-
- mov (0+4)*4(sp),itmp1 /* restore itmp1 and itmp2 */
- mov (1+4)*4(sp),itmp2 /* may be used by some instructions */
- mov 1*4(sp),itmp3 /* restore return value */
-
- add $((5+2+4)*4+sizestackframeinfo),sp /* remove stack frame, keep ra */
- test itmp3,itmp3 /* exception thrown? */
- jz L_asm_wrapper_patcher_exception
- ret /* call new patched code */
-
-L_asm_wrapper_patcher_exception:
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- call builtin_asm_get_exceptionptrptr
- mov v0,itmp2
+ mov 3*4(sp),itmp2 /* pass exception address */
+ sub $2,itmp2
+ mov itmp2,1*4(sp)
+#if defined(ENABLE_PIC_ASM)
+ call .GETPC
+ add $_GLOBAL_OFFSET_TABLE_, %ebx
+ call exceptions_asm_new_abstractmethoderror@PLT
#else
- lea _exceptionptr,itmp2
+ call exceptions_asm_new_abstractmethoderror
#endif
- mov (itmp2),xptr /* get the exception pointer */
- movl $0,(itmp2) /* clear the exception pointer */
+ /* exception pointer is return value */
+ add $(3*4),sp /* remove stack frame */
- pop xpc /* get and remove return address */
- jmp asm_handle_exception
+ pop xpc /* get exception address */
+ sub $2,xpc /* exception address is ra - 2 */
+ jmp L_asm_handle_exception
/************************ function asm_builtin_x2x *****************************
* *
*******************************************************************************/
+#if defined(ENABLE_PIC_ASM)
+.GETPC:
+ mov (%esp), %ebx
+ ret
+#endif
+
asm_builtin_f2i:
- sub $4,%esp
+ sub $(3*4),%esp
+#if defined(ENABLE_PIC_ASM)
+ sub $12, %esp
+ push %ebx
+ fsts (%esp)
+ call .GETPC
+ add $_GLOBAL_OFFSET_TABLE_, %ebx
+ call builtin_f2i@PLT
+ pop %ebx
+ add $12, %esp
+#else
fsts (%esp)
call builtin_f2i
- add $4,%esp
+#endif
+ add $(3*4),%esp
ret
asm_builtin_d2i:
- sub $8,%esp
+ sub $(3*4),%esp
+#if defined(ENABLE_PIC_ASM)
+ sub $12, %esp
+ push %ebx
+ fstl (%esp)
+ call .GETPC
+ add $_GLOBAL_OFFSET_TABLE_, %ebx
+ call builtin_d2i@PLT
+ pop %ebx
+ add $12, %esp
+#else
fstl (%esp)
call builtin_d2i
- add $8,%esp
+#endif
+ add $(3*4),%esp
ret
asm_builtin_f2l:
- sub $4,%esp
+ sub $(3*4),%esp
+#if defined(ENABLE_PIC_ASM)
+ sub $12, %esp
+ push %ebx
+ fsts (%esp)
+ call .GETPC
+ add $_GLOBAL_OFFSET_TABLE_, %ebx
+ call builtin_f2l@PLT
+ pop %ebx
+ add $12, %esp
+#else
fsts (%esp)
call builtin_f2l
- add $4,%esp
+#endif
+ add $(3*4),%esp
ret
asm_builtin_d2l:
- sub $8,%esp
+ sub $(3*4),%esp
+#if defined(ENABLE_PIC_ASM)
+ sub $12, %esp
+ push %ebx
+ fstl (%esp)
+ call .GETPC
+ add $_GLOBAL_OFFSET_TABLE_, %ebx
+ call builtin_d2l@PLT
+ pop %ebx
+ add $12, %esp
+#else
fstl (%esp)
call builtin_d2l
- add $8,%esp
+#endif
+ add $(3*4),%esp
ret
-/******************* function asm_initialize_thread_stack **********************
-* *
-* initialized a thread stack *
-* (to)->restorePoint = asm_initialize_thread_stack((u1*)(func), (to)->stackEnd)*
-* *
-*******************************************************************************/
+/* asm_compare_and_swap ********************************************************
+
+ Does an atomic compare and swap. Required for the lock
+ implementation.
+
+ Atomically do the following: Check if the location still contains
+ `oldval`. If so, replace it by `newval` and return `oldval`.
+
+ RETURN VALUE:
+ the old value at *p
+
+ long compare_and_swap(volatile long *p, long oldval, long newval);
-asm_initialize_thread_stack:
- mov 8(%esp),%eax /* (to)->stackEnd */
- sub $36,%eax /* 4 bytes * 8 regs + 4 bytes func */
-
- xor %edx,%edx
- mov %edx,0(%eax)
- mov %edx,4(%eax)
- mov %edx,8(%eax)
- mov %edx,12(%eax)
- mov %edx,16(%eax)
- mov %edx,20(%eax)
- mov %edx,24(%eax)
- mov %edx,28(%eax)
-
- mov 4(%esp),%edx /* save (u1*) (func) */
- mov %edx,32(%eax)
-
- ret /* return restorepoint in %eax */
-
-
-/******************* function asm_perform_threadswitch *************************
-* *
-* void asm_perform_threadswitch (u1 **from, u1 **to, u1 **stackTop); *
-* *
-* performs a threadswitch *
-* *
*******************************************************************************/
-asm_perform_threadswitch:
- sub $36,%esp
-
- mov %eax,0(%esp)
- mov %ecx,4(%esp)
- mov %edx,8(%esp)
- mov %ebx,12(%esp)
- mov %esp,16(%esp)
- mov %ebp,20(%esp)
- mov %esi,24(%esp)
- mov %edi,28(%esp)
-
- mov 36(%esp),%eax /* save current return address */
- mov %eax,32(%esp)
-
- mov 40(%esp),%eax /* first argument **from */
- mov %esp,0(%eax)
-
- mov 48(%esp),%eax /* third argument **stackTop */
- mov %esp,0(%eax)
-
- mov 44(%esp),%eax /* second argument **to */
- mov 0(%eax),%esp /* load new stack pointer */
-
- mov 0(%esp),%eax
- mov 4(%esp),%ecx
- mov 8(%esp),%edx
- mov 12(%esp),%ebx
- /* skip stack pointer */
- mov 20(%esp),%ebp
- mov 24(%esp),%esi
- mov 28(%esp),%edi
-
- add $32,%esp /* leave return address on stack */
+asm_compare_and_swap:
+ mov 1*4(sp),%ecx /* load p into a register */
+ mov 2*4(sp),%eax /* load oldval into return register */
+ mov 3*4(sp),%edx /* load newval into a register */
+ lock; cmpxchgl %edx,0(%ecx)
ret
-
-/********************* function asm_switchstackandcall *************************
-* *
-* int asm_switchstackandcall (void *stack, void *func, void **stacktopsave, *
-* void *p); *
-* *
-* Switches to a new stack, calls a function and switches back. *
-* a0 new stack pointer *
-* a1 function pointer *
-* a2 pointer to variable where stack top should be stored *
-* a3 pointer to user data, is passed to the function *
-* *
+
+/* asm_memory_barrier **********************************************************
+
+ A memory barrier for the Java Memory Model.
+
*******************************************************************************/
-asm_switchstackandcall:
- mov 4(%esp),%edx /* first argument *stack */
- sub $8,%edx /* allocate new stack */
+asm_memory_barrier:
+ lock; add $0,0(sp)
+ ret
- mov (%esp),%eax /* save return address on new stack */
- mov %eax,(%edx)
- mov %esp,4(%edx) /* save old stack pointer on new stack */
+#if defined(ENABLE_ESCAPE_CHECK)
+asm_escape_check:
+ sub $24,%esp
- mov 12(%esp),%eax /* third argument **stacktopsave */
- mov %esp,(%eax) /* save old stack pointer to variable */
+ mov t0, 4(%esp)
+ mov itmp1, 8(%esp)
+ mov itmp2, 12(%esp)
+ mov itmp3, 16(%esp)
- mov 8(%esp),%eax /* load function pointer */
- mov 16(%esp),%ecx /* fourth argument *p */
-
- mov %edx,%esp /* switch to new stack */
+ mov 28(%esp), itmp1
+ mov itmp1, (%esp)
- sub $4,%esp
- mov %ecx,0(%esp) /* pass pointer */
- call *%eax /* and call function */
- add $4,%esp
+ call escape_analysis_escape_check
- mov (%esp),%edx /* load return address */
- mov 4(%esp),%esp /* switch to old stack */
- mov %edx,(%esp)
- ret
+ mov 4(%esp), t0
+ mov 8(%esp), itmp1
+ mov 12(%esp), itmp2
+ mov 16(%esp), itmp3
-
-asm_getclassvalues_atomic:
-_crit_restart2:
- mov 4(%esp),%ecx /* super */
- mov 8(%esp),%edx /* sub */
-_crit_begin2:
- mov offbaseval(%ecx),%eax
- mov offdiffval(%ecx),%ecx
- mov offbaseval(%edx),%edx
-_crit_end2:
- push %ebx
- mov 16(%esp),%ebx /* out */
- mov %eax,offcast_super_baseval(%ebx)
- mov %ecx,offcast_super_diffval(%ebx)
- mov %edx,offcast_sub_baseval(%ebx)
- pop %ebx
+ add $24,sp
ret
+#endif
- .data
-asm_criticalsections:
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
-#if 0
- .long _crit_begin1
- .long _crit_end1
- .long _crit_restart1
-#endif
- .long _crit_begin2
- .long _crit_end2
- .long _crit_restart2
-#endif
- .long 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.
* c-basic-offset: 4
* tab-width: 4
* End:
+ * vim:noexpandtab:sw=4:ts=4:
*/
projects / cacao.git / blobdiff