X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fvm%2Fjit%2Fx86_64%2Fasmpart.S;h=bfeb1e0fe8f44a5a13750c4689f357f194b87d43;hb=4bd464b88e2ca31eb0234dfe783d535058098d52;hp=e73e7548fa6e9e8e8f030121724b8f525fee8b3e;hpb=6ef3a24e8bd1287108ea41a3c3c2acc1067b7435;p=cacao.git diff --git a/src/vm/jit/x86_64/asmpart.S b/src/vm/jit/x86_64/asmpart.S index e73e7548f..bfeb1e0fe 100644 --- a/src/vm/jit/x86_64/asmpart.S +++ b/src/vm/jit/x86_64/asmpart.S @@ -1,9 +1,7 @@ /* src/vm/jit/x86_64/asmpart.S - Java-C interface functions for x86_64 - Copyright (C) 1996-2005, 2006 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) 1996-2012 + CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO This file is part of CACAO. @@ -22,62 +20,42 @@ 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 4623 2006-03-16 00:05:18Z edwin $ - */ #include "config.h" -#include "md-abi.h" -#include "md-asm.h" - -#include "vm/jit/abi.h" #include "vm/jit/x86_64/arch.h" -#include "vm/jit/x86_64/offsets.h" +#include "vm/jit/x86_64/md-abi.h" +#include "vm/jit/x86_64/md-asm.h" +#include "vm/jit/abi-asm.h" #include "vm/jit/methodheader.h" .text -/* exported functions and variables *******************************************/ +/* export functions ***********************************************************/ .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_exception .globl asm_handle_nat_exception - .globl asm_wrapper_patcher - - .globl asm_replacement_out - .globl asm_replacement_in + .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 - /********************* function asm_calljavafunction *************************** * * @@ -95,28 +73,17 @@ .align 8 - .quad 0 /* catch type all */ - .quad calljava_xhandler2 /* handler pc */ - .quad calljava_xhandler2 /* end pc */ - .quad L_asm_vm_call_method /* start pc */ - .long 1 /* extable size */ - .long 0 - .quad 0 /* line number table start */ - .quad 0 /* line number table size */ - .long 0 .long 0 /* fltsave */ .long 0 /* intsave */ .long 0 /* isleaf */ - .long 0 /* IsSync */ - .long 24 /* frame size */ - .quad 0 /* method pointer (pointer to name) */ + .long 0 /* frame size */ + .quad 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: -L_asm_vm_call_method: /* required for PIC code */ sub $(7*8),sp /* keep stack 16-byte aligned */ mov %rbx,0*8(sp) /* %rbx is not a callee saved in cacao*/ mov s0,1*8(sp) @@ -125,90 +92,61 @@ L_asm_vm_call_method: /* required for PIC code */ mov s3,4*8(sp) mov s4,5*8(sp) - mov a0,itmp1 /* move method pointer for compiler */ - xor %rbp,%rbp /* set argument stack frame to zero */ + mov a0,6*8(sp) /* store method PV */ - test a1,a1 /* maybe we have no args... */ - jle L_copy_done + mov sp,s0 /* save stack pointer */ - mov a1,itmp3 /* arg count */ - mov a2,itmp2 /* pointer to arg block */ + mov a1,t0 /* address of data structure */ + mov a2,itmp1 /* number of stack arguments */ - mov itmp2,%r14 /* save argument block pointer */ - mov itmp3,%r15 /* save argument count */ + mov 0*8(t0),a0 + mov 1*8(t0),a1 + mov 2*8(t0),a2 + mov 3*8(t0),a3 + mov 4*8(t0),a4 + mov 5*8(t0),a5 - sub $sizevmarg,itmp2 /* initialize pointer (smaller code) */ - add $1,itmp3 /* initialize argument count */ - xor %r12,%r12 /* initialize integer argument counter*/ - xor %r13,%r13 /* initialize float argument counter */ + movq 6*8(t0),fa0 + movq 7*8(t0),fa1 + movq 8*8(t0),fa2 + movq 9*8(t0),fa3 + movq 10*8(t0),fa4 + movq 11*8(t0),fa5 + movq 12*8(t0),fa6 + movq 13*8(t0),fa7 -L_register_copy: - add $sizevmarg,itmp2 /* goto next argument block */ - dec itmp3 /* argument count - 1 */ - jz L_register_copy_done - andb $0x02,offvmargtype(itmp2) /* is this a float/double type? */ - jnz L_register_handle_float /* yes, handle it */ + cmp $0,itmp1l + je L_asm_vm_call_method_stack_copy_done - cmp $INT_ARG_CNT,%r12 /* are we out of integer argument */ - je L_register_copy /* register? yes, next loop */ + mov itmp1,itmp2 + add $1,itmp2 /* keep stack 16-byte aligned */ + and $0xfffffffffffffffe,itmp2 + shl $3,itmp2 /* calculate stack size */ + sub itmp2,sp /* create stack frame */ + mov sp,itmp2 /* temporary stack pointer */ - lea jumptable_integer(%rip),%rbp - mov 0(%rbp,%r12,8),%rbx - inc %r12 /* integer argument counter + 1 */ - jmp *%rbx +L_asm_vm_call_method_stack_copy_loop: + mov 14*8(t0),itmp3 /* load argument */ + mov itmp3,0(itmp2) /* store argument on stack */ -L_register_handle_float: - cmp $FLT_ARG_CNT,%r13 /* are we out of float argument */ - je L_register_copy /* register? yes, next loop */ + sub $1,itmp1l /* subtract 1 argument */ + add $8,t0 /* set address of next argument */ + add $8,itmp2 /* increase SP */ - lea jumptable_float(%rip),%rbp - mov 0(%rbp,%r13,8),%rbx - inc %r13 /* float argument counter + 1 */ - jmp *%rbx - -L_register_copy_done: - mov %r15,%rbp /* calculate remaining arguments */ - sub %r12,%rbp /* - integer arguments in registers */ - sub %r13,%rbp /* - float arguments in registers */ - jle L_copy_done /* are all assigned to registers? */ - - and $0xfffffffffffffffe,%rbp /* keep stack 16-byte aligned */ - shl $3,%rbp /* calculate stack size */ - sub %rbp,sp /* stack frame for arguments */ - mov sp,%rbx /* use %rbx as temp sp */ - - sub $sizevmarg,%r14 /* initialize pointer (smaller code) */ - add $1,%r15 /* initialize argument count */ - -L_stack_copy_loop: - add $sizevmarg,%r14 /* goto next argument block */ - dec %r15 /* are there any arguments left? */ - jz L_copy_done /* no test needed after dec */ - - andb $0x02,offvmargtype(%r14) /* is this a float/double type? */ - jnz L_stack_handle_float - dec %r12 /* arguments assigned to registers */ - jge L_stack_copy_loop - jmp L_stack_copy - -L_stack_handle_float: - dec %r13 /* arguments assigned to registers */ - jge L_stack_copy_loop - -L_stack_copy: - mov offvmargdata(%r14),itmp3 /* copy s8 argument onto stack */ - mov itmp3,0(%rbx) - add $8,%rbx /* increase sp to next argument */ - jmp L_stack_copy_loop - -L_copy_done: - /* itmp1 still contains method pointer*/ - lea L_asm_call_jit_compiler(%rip),itmp3 - call *itmp3 /* call JIT compiler */ - - add bp,sp /* remove argument stack frame if any */ + cmp $0,itmp1l + jg L_asm_vm_call_method_stack_copy_loop + +L_asm_vm_call_method_stack_copy_done: + lea (6*8-256)(s0),mptr /* We subtract 256 to force the next */ + /* move instruction to have a 32-bit */ + /* offset. */ + + mov (0*8+256)(mptr),itmp3 /* load PV */ + call *itmp3 L_asm_vm_call_method_return: + mov s0,sp /* restore SP */ + mov 0*8(sp),%rbx /* restore callee saved registers */ mov 1*8(sp),s0 mov 2*8(sp),s1 @@ -218,187 +156,13 @@ L_asm_vm_call_method_return: add $(7*8),sp /* free stack space */ ret -calljava_xhandler2: +asm_vm_call_method_exception_handler: mov xptr,a0 /* pass exception pointer */ call builtin_throw_exception@PLT - xor v0,v0 /* return NULL */ jmp L_asm_vm_call_method_return - -jumptable_integer: - .quad handle_a0 - .quad handle_a1 - .quad handle_a2 - .quad handle_a3 - .quad handle_a4 - .quad handle_a5 - -handle_a0: - mov offvmargdata(itmp2),a0 - jmp L_register_copy -handle_a1: - mov offvmargdata(itmp2),a1 - jmp L_register_copy -handle_a2: - mov offvmargdata(itmp2),a2 - jmp L_register_copy -handle_a3: - mov offvmargdata(itmp2),a3 - jmp L_register_copy -handle_a4: - mov offvmargdata(itmp2),a4 - jmp L_register_copy -handle_a5: - mov offvmargdata(itmp2),a5 - jmp L_register_copy - - -jumptable_float: - .quad handle_fa0 - .quad handle_fa1 - .quad handle_fa2 - .quad handle_fa3 - .quad handle_fa4 - .quad handle_fa5 - .quad handle_fa6 - .quad handle_fa7 - -handle_fa0: - movq offvmargdata(itmp2),fa0 - jmp L_register_copy -handle_fa1: - movq offvmargdata(itmp2),fa1 - jmp L_register_copy -handle_fa2: - movq offvmargdata(itmp2),fa2 - jmp L_register_copy -handle_fa3: - movq offvmargdata(itmp2),fa3 - jmp L_register_copy -handle_fa4: - movq offvmargdata(itmp2),fa4 - jmp L_register_copy -handle_fa5: - movq offvmargdata(itmp2),fa5 - jmp L_register_copy -handle_fa6: - movq offvmargdata(itmp2),fa6 - jmp L_register_copy -handle_fa7: - movq offvmargdata(itmp2),fa7 - jmp L_register_copy - - -/****************** 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_ITMP2) ; invokevirtual/interface * -* i386_mov_membase_reg(REG_ITMP2, OFFSET(, vftbl), REG_ITMP3) * -* i386_mov_membase_reg(REG_ITMP3, 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: -L_asm_call_jit_compiler: /* required for PIC code */ - /* keep stack 16-byte aligned */ - sub $((3+ARG_CNT)*8+sizestackframeinfo),sp - - mov t0,0*8(sp) /* save register */ - - mov (3+ARG_CNT)*8+sizestackframeinfo(sp),itmp3 /* get return address */ - mov -1(itmp3),%bl /* get function code */ - cmp $0xd2,%bl /* called with `call *REG_ITMP2'? */ - jne L_not_static_special - - sub $11,itmp3 /* calculate address of immediate */ - jmp L_call_jit_compile - -L_not_static_special: - cmp $0xd0,%bl /* called with `call *REG_ITMP1' */ - jne L_not_virtual_interface - - sub $7,itmp3 /* calculate address of offset */ - mov (itmp3),itmp3l /* get offset (32-bit) */ - add itmp2,itmp3 /* add base address to get method addr*/ - jmp L_call_jit_compile - -L_not_virtual_interface: /* a call from asm_calljavamethod */ - xor itmp3,itmp3 - -L_call_jit_compile: - mov 0*8(sp),t0 /* restore register */ - mov itmp3,0*8(sp) /* save address for method pointer */ - mov itmp1,1*8(sp) /* save method pointer */ - - SAVE_ARGUMENT_REGISTERS(3) - - mov sp,a0 /* create stackframe info */ - add $((3+ARG_CNT)*8),a0 /* pass sfi */ - xor a1,a1 /* if pv is NULL, use findmethod */ - mov sp,a2 /* pass java sp */ - add $((1+3+ARG_CNT)*8+sizestackframeinfo),a2 - /* pass ra to java function */ - mov ((3+ARG_CNT)*8+sizestackframeinfo)(sp),a3 - mov a3,a4 /* xpc is equal to ra */ - call stacktrace_create_extern_stackframeinfo@PLT - - mov 1*8(sp),a0 /* pass method pointer */ - call jit_compile@PLT - mov v0,1*8(sp) /* save return value */ - - mov sp,a0 /* remove stackframe info */ - add $((3+ARG_CNT)*8),a0 /* pass sfi */ - call stacktrace_remove_stackframeinfo@PLT - - mov 0*8(sp),itmp3 /* restore address for method pointer */ - mov 1*8(sp),v0 /* restore return value */ - - RESTORE_ARGUMENT_REGISTERS(3) - - add $((3+ARG_CNT)*8+sizestackframeinfo),sp /* remove stack frame */ - - test v0,v0 /* check for exception */ - je L_asm_call_jit_compiler_exception - - test itmp3,itmp3 /* is address == 0 (asm_calljavamethod*/ - je L_call_method - - mov v0,(itmp3) /* and now save the new 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@PLT - mov v0,itmp2 /* v0 == xptr */ -#else - lea _no_threads_exceptionptr(%rip),itmp2 -#endif - mov (itmp2),xptr /* get the exception pointer */ - movl $0,(itmp2) /* clear exception pointer */ - - pop xpc /* delete return address */ - sub $5,xpc /* faulting address is ra - 5 */ - jmp L_asm_handle_exception +asm_vm_call_method_end: + nop /* asm_handle_exception ******************************************************** @@ -434,7 +198,7 @@ L_asm_handle_exception_stack_loop: mov t0,4*8(sp) /* save maybe-leaf flag */ mov xpc,a0 /* exception pc */ - call codegen_findmethod@PLT + call methodtree_find@PLT mov v0,2*8(sp) /* save data segment pointer */ mov 0*8(sp),a0 /* pass exception pointer */ @@ -543,210 +307,26 @@ noflt: jmp L_asm_handle_exception_stack_loop -/* asm_wrapper_patcher ********************************************************* +/* asm_abstractmethoderror ***************************************************** - XXX - - Stack layout: - 40 return address - 32 pointer to virtual java_objectheader - 24 machine code (which is patched back later) - 16 unresolved class/method/field reference - 8 data segment displacement from load instructions - 0 pointer to patcher function - -8 bp + Creates and throws an AbstractMethodError. *******************************************************************************/ -asm_wrapper_patcher: - push bp /* save base pointer */ - mov sp,bp /* move actual sp to bp */ - sub $((3+ARG_CNT+TMP_CNT)*8+sizestackframeinfo),sp - and $0xfffffffffffffff0,sp /* align sp to 16-byte (this is for */ - /* leaf functions) */ - - SAVE_ARGUMENT_REGISTERS(3) - SAVE_TEMPORARY_REGISTERS(3+ARG_CNT) - - mov itmp1,0*8(sp) /* save itmp1 and itmp2 */ - mov itmp2,1*8(sp) /* can be used by some instructions */ - - mov sp,a0 /* create stackframe info */ - add $((3+ARG_CNT+TMP_CNT)*8),a0 - xor a1,a1 /* if pv is NULL, use findmethod */ - mov bp,a2 /* pass java sp */ - add $((6+1)*8),a2 - mov ((5+1)*8)(bp),a3 /* pass ra to java function */ - mov a3,a4 /* xpc is equal to ra */ - call stacktrace_create_extern_stackframeinfo@PLT - - mov bp,a0 /* pass stack pointer */ - add $((1+1)*8),a0 /* skip function pointer */ - mov 1*8(bp),itmp3 /* get function pointer */ - call *itmp3 /* call the patcher function */ - mov v0,2*8(sp) /* save return value */ - - mov sp,a0 /* remove stackframe info */ - add $((3+ARG_CNT+TMP_CNT)*8),a0 - call stacktrace_remove_stackframeinfo@PLT - - RESTORE_ARGUMENT_REGISTERS(3) - RESTORE_TEMPORARY_REGISTERS(3+ARG_CNT) - - mov 0*8(sp),itmp1 /* restore itmp1 and itmp2 */ - mov 1*8(sp),itmp2 /* can be used by some instructions */ - mov 2*8(sp),itmp3 /* restore return value */ - - mov bp,sp /* restore original sp */ - pop bp /* restore bp */ - add $(5*8),sp /* remove patcher stackframe, 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@PLT - mov v0,itmp2 /* v0 == xptr */ -#else - mov _no_threads_exceptionptr,itmp2 -#endif - mov (itmp2),xptr /* get the exception pointer */ - movl $0,(itmp2) /* clear exception pointer */ - - pop xpc /* get and remove return address */ +asm_abstractmethoderror: + sub $8,sp /* keep stack aligned */ + mov sp,a0 /* pass java sp */ + add $2*8,a0 + mov 1*8(sp),a1 /* pass exception address */ + sub $3,a1 + call exceptions_asm_new_abstractmethoderror@PLT + /* exception pointer is return value */ + pop xpc /* dummy pop */ + pop xpc /* get exception address */ + sub $3,xpc /* exception address is ra - 3 */ jmp L_asm_handle_exception -/* 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) - - /* 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_replacement_in: - mov a0,%rbp /* executionstate *es */ - - /* 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 * @@ -809,129 +389,10 @@ asm_builtin_d2l: ret -/******************* function asm_initialize_thread_stack ********************** -* * -* initialized a thread stack * -* (to)->restorePoint = asm_initialize_thread_stack((u1*)(func), (to)->stackEnd)* -* * -*******************************************************************************/ - -asm_initialize_thread_stack: - sub $(7*8),%rsi - - xor %r10,%r10 - mov %r10,0*8(%rsi) - mov %r10,1*8(%rsi) - mov %r10,2*8(%rsi) - mov %r10,3*8(%rsi) - mov %r10,4*8(%rsi) - mov %r10,5*8(%rsi) - - mov %rdi,6*8(%rsi) /* save (u1*) (func) */ - mov %rsi,%rax /* return restorepoint in %rax */ - ret - - -/******************* function asm_perform_threadswitch ************************* -* * -* void asm_perform_threadswitch (u1 **from, u1 **to, u1 **stackTop); * -* * -* performs a threadswitch * -* * -*******************************************************************************/ - -asm_perform_threadswitch: - sub $(7*8),%rsp /* allocate stack frame */ - - mov %rbx,0*8(%rsp) - mov %rbp,1*8(%rsp) - mov %r12,2*8(%rsp) - mov %r13,3*8(%rsp) - mov %r14,4*8(%rsp) - mov %r15,5*8(%rsp) - - mov 7*8(%rsp),%rax /* save current return address */ - mov %rax,6*8(%rsp) - - mov %rsp,(%rdi) /* first argument **from */ - mov %rsp,(%rdx) /* third argument **stackTop */ - - mov (%rsi),%rsp /* load new stack pointer */ - - mov 0*8(%rsp),%rbx - mov 1*8(%rsp),%rbp - mov 2*8(%rsp),%r12 - mov 3*8(%rsp),%r13 - mov 4*8(%rsp),%r14 - mov 5*8(%rsp),%r15 - - mov 6*8(%rsp),%rax /* restore return address */ - add $(7*8),%rsp /* free stack frame */ - mov %rax,(%rsp) - 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 (%rdi) new stack pointer * -* a1 (%rsi) function pointer * -* a2 (%rdx) pointer to variable where stack top should be stored * -* a3 (%rcx) pointer to user data, is passed to the function * -* * -*******************************************************************************/ - -asm_switchstackandcall: - sub $(1*8),%rsp /* keep stack 16-byte aligned */ - sub $16,%rdi /* allocate new stack */ - - mov 8(%rsp),%rax /* save return address on new stack */ - mov %rax,(%rdi) - mov %rsp,8(%rdi) /* save old stack pointer on new stack*/ - mov %rsp,(%rdx) /* save old stack pointer to variable */ - - mov %rdi,%rsp /* switch to new stack */ - - mov %rcx,%rdi /* pass pointer */ - call *%rsi /* and call function */ - - mov (%rsp),%r10 /* load return address */ - mov 8(%rsp),%rsp /* switch to old stack */ - add $(1*8),%rsp /* free stack space */ - mov %r10,(%rsp) /* write return adress */ - ret - - -asm_getclassvalues_atomic: -_crit_restart: -_crit_begin: - movl offbaseval(a0),itmp1l - movl offdiffval(a0),itmp2l - movl offbaseval(a1),itmp3l -_crit_end: - movl itmp1l,offcast_super_baseval(a2) - movl itmp2l,offcast_super_diffval(a2) - movl itmp3l,offcast_sub_baseval(a2) - ret - - .data - -asm_criticalsections: -#if defined(USE_THREADS) && defined(NATIVE_THREADS) - .quad _crit_begin - .quad _crit_end - .quad _crit_restart -#endif - .quad 0 - - -/* Disable exec-stacks, required for Gentoo ***********************************/ +/* disable exec-stacks ********************************************************/ -#if defined(__GCC__) && defined(__ELF__) - .section .note.GNU-stack,"",@progbits +#if defined(__linux__) && defined(__ELF__) + .section .note.GNU-stack,"",%progbits #endif