X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-assem.S;h=315643b0130538992c5f987a6ec800362537e40d;hb=4b585c19dcd87dc3410094a2d2d7385d49200a44;hp=f5c6b63037bbf850b9013fd575cab763a3cdfd48;hpb=6b7b0266343826426a3efffa3b8b8d4d552f8f97;p=sbcl.git diff --git a/src/runtime/x86-assem.S b/src/runtime/x86-assem.S index f5c6b63..315643b 100644 --- a/src/runtime/x86-assem.S +++ b/src/runtime/x86-assem.S @@ -14,24 +14,40 @@ */ #define LANGUAGE_ASSEMBLY -#include "validate.h" #include "sbcl.h" +#include "validate.h" #include "genesis/closure.h" +#include "genesis/funcallable-instance.h" #include "genesis/fdefn.h" #include "genesis/static-symbols.h" #include "genesis/symbol.h" #include "genesis/thread.h" -/* Minimize conditionalization for different OS naming schemes. */ -#if defined __linux__ || defined __FreeBSD__ /* (but *not* OpenBSD) */ +/* Minimize conditionalization for different OS naming schemes. + * + * (As of sbcl-0.8.10, this seems no longer to be much of an issue, + * since everyone has converged on ELF. If this generality really + * turns out not to matter, perhaps it's just clutter we could get + * rid of? -- WHN 2004-04-18) + * + * (Except Win32, which is unlikely ever to be ELF, sorry. -- AB 2005-12-08) + */ +#if defined __linux__ || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ || defined __sun #define GNAME(var) var #else #define GNAME(var) _##var #endif -/* Get the right type of alignment. Linux and FreeBSD (but not OpenBSD) - * want alignment in bytes. */ -#if defined(__linux__) || defined(__FreeBSD__) +/* Get the right type of alignment. Linux, FreeBSD and NetBSD (but not OpenBSD) + * want alignment in bytes. + * + * (As in the GNAME() definitions above, as of sbcl-0.8.10, this seems + * no longer to be much of an issue, since everyone has converged on + * the same value. If this generality really turns out not to + * matter any more, perhaps it's just clutter we could get + * rid of? -- WHN 2004-04-18) + */ +#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__sun) || defined(LISP_FEATURE_WIN32) #define align_4byte 4 #define align_8byte 8 #define align_16byte 16 @@ -41,10 +57,38 @@ #define align_16byte 4 #endif +/* + * The assembler used for win32 doesn't like .type or .size directives, + * so we want to conditionally kill them out. So let's wrap them in macros + * that are defined to be no-ops on win32. Hopefully this still works on + * other platforms. + */ +#if !defined(LISP_FEATURE_WIN32) && !defined(LISP_FEATURE_DARWIN) +#define TYPE(name) .type name,@function +#define SIZE(name) .size name,.-name +#else +#define TYPE(name) +#define SIZE(name) +#endif + +/* + * x86/darwin (as of MacOS X 10.4.5) doesn't reliably file signal + * handlers (SIGTRAP or Mach exception handlers) for 0xCC, wo we have + * to use ud2 instead. ud2 is an undefined opcode, #x0b0f, or + * 0F 0B in low-endian notation, that causes SIGILL to fire. We check + * for this instruction in the SIGILL handler and if we see it, we + * advance the EIP by two bytes to skip over ud2 instruction and + * call sigtrap_handler. */ +#if defined(LISP_FEATURE_DARWIN) +#define END() +#define TRAP ud2 +#else +#define END() .end +#define TRAP int3 +#endif + .text - .global GNAME(foreign_function_call_active) - .global GNAME(all_threads) - + .globl GNAME(all_threads) /* * A call to call_into_c preserves esi, edi, and ebp. @@ -56,14 +100,15 @@ * floats. * * This should work for Lisp calls C calls Lisp calls C.. + * + * FIXME & OAOOM: This duplicates call-out in src/compiler/x86/c-call.lisp, + * so if you tweak this, change that too! */ .text .align align_16byte,0x90 - .global GNAME(call_into_c) - .type GNAME(call_into_c),@function + .globl GNAME(call_into_c) + TYPE(GNAME(call_into_c)) GNAME(call_into_c): - movl $1,GNAME(foreign_function_call_active) - /* Save the return Lisp address in ebx. */ popl %ebx @@ -77,13 +122,12 @@ GNAME(call_into_c): fstp %st(0) fstp %st(0) - call *%eax # normal callout using Lisp stack - - movl %eax,%ecx # remember integer return value + call *%eax # normal callout using Lisp stack + movl %eax,%ecx # remember integer return value /* Check for a return FP value. */ fxam - fnstsw %eax + fnstsw %ax andl $0x4500,%eax cmpl $0x4100,%eax jne Lfp_rtn_value @@ -102,7 +146,6 @@ GNAME(call_into_c): /* Restore the return value. */ movl %ecx,%eax # maybe return value - movl $0,GNAME(foreign_function_call_active) /* Return. */ jmp *%ebx @@ -120,16 +163,15 @@ Lfp_rtn_value: /* We don't need to restore eax, because the result is in st(0). */ - movl $0,GNAME(foreign_function_call_active) -/* Return. */ +/* Return. FIXME: It would be nice to restructure this to use RET. */ jmp *%ebx - .size GNAME(call_into_c), . - GNAME(call_into_c) + SIZE(GNAME(call_into_c)) .text - .global GNAME(call_into_lisp_first_time) - .type GNAME(call_into_lisp_first_time),@function + .globl GNAME(call_into_lisp_first_time) + TYPE(GNAME(call_into_lisp_first_time)) /* The *ALIEN-STACK* pointer is set up on the first call_into_lisp when * the stack changes. We don't worry too much about saving registers @@ -140,17 +182,20 @@ Lfp_rtn_value: GNAME(call_into_lisp_first_time): pushl %ebp # Save old frame pointer. movl %esp,%ebp # Establish new frame. +#ifndef LISP_FEATURE_WIN32 movl %esp,ALIEN_STACK + SYMBOL_VALUE_OFFSET movl GNAME(all_threads),%eax - movl THREAD_CONTROL_STACK_START_OFFSET(%eax) ,%esp - /* don't think too hard about what happens if we get interrupted - * here */ - addl $THREAD_CONTROL_STACK_SIZE-4,%esp + /* pthread machinery takes care of this for other threads */ + movl THREAD_CONTROL_STACK_END_OFFSET(%eax) ,%esp +#else +/* Win32 -really- doesn't like you switching stacks out from under it. */ + movl GNAME(all_threads),%eax +#endif jmp Lstack .text - .global GNAME(call_into_lisp) - .type GNAME(call_into_lisp),@function + .globl GNAME(call_into_lisp) + TYPE(GNAME(call_into_lisp)) /* The C conventions require that ebx, esi, edi, and ebp be preserved * across function calls. */ @@ -166,8 +211,8 @@ Lstack: fnsave (%esp) # save and reset NPX movl (%esp),%eax # Load NPX control word. - andl $0xfffff3ff,%eax # Set rounding mode to nearest. - orl $0x00000300,%eax # Set precision to 64 bits. + andl $0xfffff2ff,%eax # Set rounding mode to nearest. + orl $0x00000200,%eax # Set precision to 64 bits. (53-bit mantissa) pushl %eax fldcw (%esp) # Recover modes. popl %eax @@ -195,8 +240,6 @@ Lstack: xorl %esi,%esi # third arg /* no longer in function call */ - movl %eax, GNAME(foreign_function_call_active) - movl %esp,%ebx # remember current stack pushl %ebx # Save entry stack on (maybe) new stack. @@ -217,6 +260,19 @@ Lstack: Ldone: /* Registers eax, ecx, edx, edi, and esi are now live. */ +#ifdef LISP_FEATURE_WIN32 + /* Establish an SEH frame. */ +#ifdef LISP_FEATURE_SB_THREAD + /* FIXME: need to save BSP here. */ +#error "need to save BSP here, but don't know how yet." +#else + pushl BINDING_STACK_POINTER + SYMBOL_VALUE_OFFSET +#endif + pushl $GNAME(exception_handler_wrapper) + pushl %fs:0 + movl %esp, %fs:0 +#endif + /* Alloc new frame. */ mov %esp,%ebx # The current sp marks start of new frame. push %ebp # fp in save location S0 @@ -227,9 +283,17 @@ Ldone: /* If the function returned multiple values, it will return to this point. Lose them */ + jnc LsingleValue mov %ebx, %esp +LsingleValue: /* A singled value function returns here */ +#ifdef LISP_FEATURE_WIN32 + /* Remove our SEH frame. */ + popl %fs:0 + add $8, %esp +#endif + /* Restore the stack, in case there was a stack change. */ popl %esp # c-sp @@ -245,51 +309,53 @@ Ldone: popl %ebp # c-sp movl %edx,%eax # c-val ret - .size GNAME(call_into_lisp), . - GNAME(call_into_lisp) + SIZE(GNAME(call_into_lisp)) /* support for saving and restoring the NPX state from C */ .text - .global GNAME(fpu_save) - .type GNAME(fpu_save),@function + .globl GNAME(fpu_save) + TYPE(GNAME(fpu_save)) .align 2,0x90 GNAME(fpu_save): movl 4(%esp),%eax fnsave (%eax) # Save the NPX state. (resets NPX) ret - .size GNAME(fpu_save),.-GNAME(fpu_save) + SIZE(GNAME(fpu_save)) - .global GNAME(fpu_restore) - .type GNAME(fpu_restore),@function + .globl GNAME(fpu_restore) + TYPE(GNAME(fpu_restore)) .align 2,0x90 GNAME(fpu_restore): movl 4(%esp),%eax frstor (%eax) # Restore the NPX state. ret - .size GNAME(fpu_restore),.-GNAME(fpu_restore) + SIZE(GNAME(fpu_restore)) /* * the undefined-function trampoline */ .text - .align align_4byte,0x90 - .global GNAME(undefined_tramp) - .type GNAME(undefined_tramp),@function + .align align_16byte,0x90 + .globl GNAME(undefined_tramp) + TYPE(GNAME(undefined_tramp)) + .byte 0, 0, 0, SIMPLE_FUN_HEADER_WIDETAG GNAME(undefined_tramp): - int3 + TRAP .byte trap_Error .byte 2 .byte UNDEFINED_FUN_ERROR .byte sc_DescriptorReg # eax in the Descriptor-reg SC ret - .size GNAME(undefined_tramp), .-GNAME(undefined_tramp) + SIZE(GNAME(undefined_tramp)) /* * the closure trampoline */ .text - .align align_4byte,0x90 - .global GNAME(closure_tramp) - .type GNAME(closure_tramp),@function + .align align_16byte,0x90 + .globl GNAME(closure_tramp) + TYPE(GNAME(closure_tramp)) + .byte 0, 0, 0, SIMPLE_FUN_HEADER_WIDETAG GNAME(closure_tramp): movl FDEFN_FUN_OFFSET(%eax),%eax /* FIXME: The '*' after "jmp" in the next line is from PVE's @@ -299,74 +365,59 @@ GNAME(closure_tramp): * right. It would be good to find a way to force the flow of * control through here to test it. */ jmp *CLOSURE_FUN_OFFSET(%eax) - .size GNAME(closure_tramp), .-GNAME(closure_tramp) + SIZE(GNAME(closure_tramp)) + .text + .align align_16byte,0x90 + .globl GNAME(funcallable_instance_tramp) + TYPE(GNAME(funcallable_instance_tramp)) +GNAME(funcallable_instance_tramp): + movl FUNCALLABLE_INSTANCE_FUNCTION_OFFSET(%eax),%eax + /* KLUDGE: on this platform, whatever kind of function is in %rax + * now, the first word of it contains the address to jump to. */ + jmp *CLOSURE_FUN_OFFSET(%eax) + SIZE(GNAME(funcallable_instance_tramp)) + /* * fun-end breakpoint magic */ .text - .global GNAME(fun_end_breakpoint_guts) - .align align_4byte + .globl GNAME(fun_end_breakpoint_guts) + .align align_16byte GNAME(fun_end_breakpoint_guts): /* Multiple Value return */ - jmp multiple_value_return + jc multiple_value_return /* Single value return: The eventual return will now use the multiple values return convention but with a return values count of one. */ movl %esp,%ebx # Setup ebx - the ofp. subl $4,%esp # Allocate one stack slot for the return value movl $4,%ecx # Setup ecx for one return value. - movl $NIL,%edi # default second value - movl $NIL,%esi # default third value + movl $(NIL),%edi # default second value + movl $(NIL),%esi # default third value multiple_value_return: - .global GNAME(fun_end_breakpoint_trap) + .globl GNAME(fun_end_breakpoint_trap) GNAME(fun_end_breakpoint_trap): - int3 + TRAP .byte trap_FunEndBreakpoint hlt # We should never return here. - .global GNAME(fun_end_breakpoint_end) + .globl GNAME(fun_end_breakpoint_end) GNAME(fun_end_breakpoint_end): - .global GNAME(do_pending_interrupt) - .type GNAME(do_pending_interrupt),@function - .align align_4byte,0x90 + .globl GNAME(do_pending_interrupt) + TYPE(GNAME(do_pending_interrupt)) + .align align_16byte,0x90 GNAME(do_pending_interrupt): - int3 + TRAP .byte trap_PendingInterrupt ret - .size GNAME(do_pending_interrupt),.-GNAME(do_pending_interrupt) - -#ifdef LISP_FEATURE_GENCGC -/* This is a fast bzero using the FPU. The first argument is the start - * address which needs to be aligned on an 8 byte boundary, the second - * argument is the number of bytes, which must be a nonzero multiple - * of 8 bytes. */ -/* FIXME whether this is still faster than using the OS's bzero or - * equivalent, we don't know */ - .text - .globl GNAME(i586_bzero) - .type GNAME(i586_bzero),@function - .align align_4byte,0x90 -GNAME(i586_bzero): - movl 4(%esp),%edx # Load the start address. - movl 8(%esp),%eax # Load the number of bytes. - fldz -l1: fstl 0(%edx) - addl $8,%edx - subl $8,%eax - jnz l1 - fstp %st(0) - ret - .size GNAME(i586_bzero),.-GNAME(i586_bzero) -#endif + SIZE(GNAME(do_pending_interrupt)) - -/* - * Allocate bytes and return the start of the allocated space +/* Allocate bytes and return the start of the allocated space * in the specified destination register. * * In the general case the size will be in the destination register. @@ -374,451 +425,457 @@ l1: fstl 0(%edx) * All registers must be preserved except the destination. * The C conventions will preserve ebx, esi, edi, and ebp. * So only eax, ecx, and edx need special care here. + * + * ALLOC factors out the logic of calling alloc(): stack alignment, etc. + * + * DEFINE_ALLOC_TO_FOO defines an alloction routine. */ - - .globl GNAME(alloc_to_eax) - .type GNAME(alloc_to_eax),@function - .align align_4byte,0x90 -GNAME(alloc_to_eax): - pushl %ecx # Save ecx and edx as C could destroy them. - pushl %edx - pushl %eax # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - popl %edx # Restore ecx and edx. - popl %ecx - ret - .size GNAME(alloc_to_eax),.-GNAME(alloc_to_eax) - - .globl GNAME(alloc_8_to_eax) - .type GNAME(alloc_8_to_eax),@function - .align align_4byte,0x90 -GNAME(alloc_8_to_eax): - pushl %ecx # Save ecx and edx as C could destroy them. - pushl %edx - pushl $8 # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - popl %edx # Restore ecx and edx. - popl %ecx - ret - .size GNAME(alloc_8_to_eax),.-GNAME(alloc_8_to_eax) - - .globl GNAME(alloc_8_to_eax) - .type GNAME(alloc_8_to_eax),@function - .align align_4byte,0x90 - - .globl GNAME(alloc_16_to_eax) - .type GNAME(alloc_16_to_eax),@function - .align align_4byte,0x90 -GNAME(alloc_16_to_eax): - pushl %ecx # Save ecx and edx as C could destroy them. - pushl %edx - pushl $16 # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - popl %edx # Restore ecx and edx. - popl %ecx - ret - .size GNAME(alloc_16_to_eax),.-GNAME(alloc_16_to_eax) - - .globl GNAME(alloc_to_ecx) - .type GNAME(alloc_to_ecx),@function - .align align_4byte,0x90 -GNAME(alloc_to_ecx): - pushl %eax # Save eax and edx as C could destroy them. - pushl %edx - pushl %ecx # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%ecx # Set up the destination. - popl %edx # Restore eax and edx. - popl %eax - ret - .size GNAME(alloc_to_ecx),.-GNAME(alloc_to_ecx) - - .globl GNAME(alloc_8_to_ecx) - .type GNAME(alloc_8_to_ecx),@function - .align align_4byte,0x90 -GNAME(alloc_8_to_ecx): - pushl %eax # Save eax and edx as C could destroy them. - pushl %edx - pushl $8 # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%ecx # Set up the destination. - popl %edx # Restore eax and edx. - popl %eax - ret - .size GNAME(alloc_8_to_ecx),.-GNAME(alloc_8_to_ecx) - - .globl GNAME(alloc_16_to_ecx) - .type GNAME(alloc_16_to_ecx),@function - .align align_4byte,0x90 -GNAME(alloc_16_to_ecx): - pushl %eax # Save eax and edx as C could destroy them. - pushl %edx - pushl $16 # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%ecx # Set up the destination. - popl %edx # Restore eax and edx. - popl %eax - ret - .size GNAME(alloc_16_to_ecx),.-GNAME(alloc_16_to_ecx) - - - .globl GNAME(alloc_to_edx) - .type GNAME(alloc_to_edx),@function - .align align_4byte,0x90 -GNAME(alloc_to_edx): - pushl %eax # Save eax and ecx as C could destroy them. - pushl %ecx - pushl %edx # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%edx # Set up the destination. - popl %ecx # Restore eax and ecx. - popl %eax - ret - .size GNAME(alloc_to_edx),.-GNAME(alloc_to_edx) - - .globl GNAME(alloc_8_to_edx) - .type GNAME(alloc_8_to_edx),@function - .align align_4byte,0x90 -GNAME(alloc_8_to_edx): - pushl %eax # Save eax and ecx as C could destroy them. - pushl %ecx - pushl $8 # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%edx # Set up the destination. - popl %ecx # Restore eax and ecx. - popl %eax - ret - .size GNAME(alloc_8_to_edx),.-GNAME(alloc_8_to_edx) - - .globl GNAME(alloc_16_to_edx) - .type GNAME(alloc_16_to_edx),@function - .align align_4byte,0x90 -GNAME(alloc_16_to_edx): - pushl %eax # Save eax and ecx as C could destroy them. - pushl %ecx - pushl $16 # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%edx # Set up the destination. - popl %ecx # Restore eax and ecx. - popl %eax - ret - .size GNAME(alloc_16_to_edx),.-GNAME(alloc_16_to_edx) - - - - .globl GNAME(alloc_to_ebx) - .type GNAME(alloc_to_ebx),@function - .align align_4byte,0x90 -GNAME(alloc_to_ebx): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl %ebx # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%ebx # Set up the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_to_ebx),.-GNAME(alloc_to_ebx) - - .globl GNAME(alloc_8_to_ebx) - .type GNAME(alloc_8_to_ebx),@function - .align align_4byte,0x90 -GNAME(alloc_8_to_ebx): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl $8 # Push the size. - call GNAME(alloc) - addl $4,%esp # Pop the size arg. - movl %eax,%ebx # Set up the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_8_to_ebx),.-GNAME(alloc_8_to_ebx) - - .globl GNAME(alloc_16_to_ebx) - .type GNAME(alloc_16_to_ebx),@function - .align align_4byte,0x90 -GNAME(alloc_16_to_ebx): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl $16 # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%ebx # setup the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_16_to_ebx),.-GNAME(alloc_16_to_ebx) - - - - .globl GNAME(alloc_to_esi) - .type GNAME(alloc_to_esi),@function - .align align_4byte,0x90 -GNAME(alloc_to_esi): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl %esi # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%esi # setup the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_to_esi),.-GNAME(alloc_to_esi) - - .globl GNAME(alloc_8_to_esi) - .type GNAME(alloc_8_to_esi),@function - .align align_4byte,0x90 -GNAME(alloc_8_to_esi): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl $8 # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%esi # setup the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_8_to_esi),.-GNAME(alloc_8_to_esi) - - .globl GNAME(alloc_16_to_esi) - .type GNAME(alloc_16_to_esi),@function - .align align_4byte,0x90 -GNAME(alloc_16_to_esi): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl $16 # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%esi # setup the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_16_to_esi),.-GNAME(alloc_16_to_esi) - - - .globl GNAME(alloc_to_edi) - .type GNAME(alloc_to_edi),@function - .align align_4byte,0x90 -GNAME(alloc_to_edi): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl %edi # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%edi # setup the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_to_edi),.-GNAME(alloc_to_edi) - - .globl GNAME(alloc_8_to_edi) - .type GNAME(alloc_8_to_edi),@function - .align align_4byte,0x90 -GNAME(alloc_8_to_edi): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl $8 # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%edi # setup the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_8_to_edi),.-GNAME(alloc_8_to_edi) - - .globl GNAME(alloc_16_to_edi) - .type GNAME(alloc_16_to_edi),@function - .align align_4byte,0x90 -GNAME(alloc_16_to_edi): - pushl %eax # Save eax, ecx, and edx as C could destroy them. - pushl %ecx - pushl %edx - pushl $16 # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%edi # setup the destination. - popl %edx # Restore eax, ecx and edx. - popl %ecx - popl %eax - ret - .size GNAME(alloc_16_to_edi),.-GNAME(alloc_16_to_edi) - - - .align align_4byte,0x90 - .globl GNAME(post_signal_tramp) - .type GNAME(post_signal_tramp),@function -GNAME(post_signal_tramp): - /* this is notionally the second half of a function whose first half - * doesn't exist. This is where call_into_lisp returns when called - * using return_to_lisp_function */ - addl $12,%esp /* clear call_into_lisp args from stack */ - popa /* restore registers */ - popl %ebp - ret - .size GNAME(post_signal_tramp),.-GNAME(post_signal_tramp) - - -#ifdef GENCGC_INLINE_ALLOC /* LISP_FEATURE_GENCGC */ +#ifdef LISP_FEATURE_DARWIN +#define ALLOC(size) \ + pushl %ebp; /* Save EBP */ \ + movl %esp,%ebp; /* Save ESP to EBP */ \ + pushl $0; /* Reserve space for arg */ \ + andl $0xfffffff0,%esp; /* Align stack to 16bytes */ \ + movl size, (%esp); /* Argument to alloc */ \ + call GNAME(alloc); \ + movl %ebp,%esp; /* Restore ESP from EBP */ \ + popl %ebp; /* Restore EBP */ +#else +#define ALLOC(size) \ + pushl size; /* Argument to alloc */ \ + call GNAME(alloc); \ + addl $4,%esp; /* Pop argument */ +#endif -/* These routines are called from Lisp when an inline allocation - * overflows. Every register except the result needs to be preserved. +#define DEFINE_ALLOC_TO_EAX(name,size) \ + .globl GNAME(name); \ + TYPE(GNAME(name)); \ + .align align_16byte,0x90; \ +GNAME(name): \ + pushl %ecx; /* Save ECX and EDX */ \ + pushl %edx; \ + ALLOC(size) \ + popl %edx; /* Restore ECX and EDX */ \ + popl %ecx; \ + ret; \ + SIZE(GNAME(name)) + +#define DEFINE_ALLOC_TO_ECX(name,size) \ + .globl GNAME(name); \ + TYPE(GNAME(name)); \ + .align align_16byte,0x90; \ +GNAME(name): \ + pushl %eax; /* Save EAX and EDX */ \ + pushl %edx; \ + ALLOC(size) \ + movl %eax,%ecx; /* Result to destination */ \ + popl %edx; \ + popl %eax; \ + ret; \ + SIZE(GNAME(name)) + +#define DEFINE_ALLOC_TO_EDX(name,size) \ + .globl GNAME(name); \ + TYPE(GNAME(name)); \ + .align align_16byte,0x90; \ +GNAME(name): \ + pushl %eax; /* Save EAX and ECX */ \ + pushl %ecx; \ + ALLOC(size) \ + movl %eax,%edx; /* Restore EAX and ECX */ \ + popl %ecx; \ + popl %eax; \ + ret; \ + SIZE(GNAME(name)) + +#define DEFINE_ALLOC_TO_REG(name,reg,size) \ + .globl GNAME(name); \ + TYPE(GNAME(name)); \ + .align align_16byte,0x90; \ +GNAME(name): \ + pushl %eax; /* Save EAX, ECX, and EDX */ \ + pushl %ecx; \ + pushl %edx; \ + ALLOC(size) \ + movl %eax,reg; /* Restore them */ \ + popl %edx; \ + popl %ecx; \ + popl %eax; \ + ret; \ + SIZE(GNAME(name)) + +DEFINE_ALLOC_TO_EAX(alloc_to_eax,%eax) +DEFINE_ALLOC_TO_EAX(alloc_8_to_eax,$8) +DEFINE_ALLOC_TO_EAX(alloc_16_to_eax,$16) + +DEFINE_ALLOC_TO_ECX(alloc_to_ecx,%ecx) +DEFINE_ALLOC_TO_ECX(alloc_8_to_ecx,$8) +DEFINE_ALLOC_TO_ECX(alloc_16_to_ecx,$16) + +DEFINE_ALLOC_TO_EDX(alloc_to_edx,%edx) +DEFINE_ALLOC_TO_EDX(alloc_8_to_edx,$8) +DEFINE_ALLOC_TO_EDX(alloc_16_to_edx,$16) + +DEFINE_ALLOC_TO_REG(alloc_to_ebx,%ebx,%ebx) +DEFINE_ALLOC_TO_REG(alloc_8_to_ebx,%ebx,$8) +DEFINE_ALLOC_TO_REG(alloc_16_to_ebx,%ebx,$16) + +DEFINE_ALLOC_TO_REG(alloc_to_esi,%esi,%esi) +DEFINE_ALLOC_TO_REG(alloc_8_to_esi,%esi,$8) +DEFINE_ALLOC_TO_REG(alloc_16_to_esi,%esi,$16) + +DEFINE_ALLOC_TO_REG(alloc_to_edi,%edi,%edi) +DEFINE_ALLOC_TO_REG(alloc_8_to_edi,%edi,$8) +DEFINE_ALLOC_TO_REG(alloc_16_to_edi,%edi,$16) + +/* Called from lisp when an inline allocation overflows. + * Every register except the result needs to be preserved. * We depend on C to preserve ebx, esi, edi, and ebp. * But where necessary must save eax, ecx, edx. */ +#ifdef LISP_FEATURE_SB_THREAD +#define START_REGION %fs:THREAD_ALLOC_REGION_OFFSET +#else +#define START_REGION GNAME(boxed_region) +#endif + +#define ALLOC_OVERFLOW(size) \ + /* Calculate the size for the allocation. */ \ + subl START_REGION,size; \ + ALLOC(size) + /* This routine handles an overflow with eax=crfp+size. So the - * size=eax-crfp. */ - .align align_4byte - .globl GNAME(alloc_overflow_eax) - .type GNAME(alloc_overflow_eax),@function + size=eax-crfp. */ + .align align_16byte + .globl GNAME(alloc_overflow_eax) + TYPE(GNAME(alloc_overflow_eax)) GNAME(alloc_overflow_eax): - pushl %ecx # Save ecx - pushl %edx # Save edx - /* Calculate the size for the allocation. */ - subl GNAME(current_region_free_pointer),%eax - pushl %eax # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - popl %edx # Restore edx. - popl %ecx # Restore ecx. - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret - .size GNAME(alloc_overflow_eax),.-GNAME(alloc_overflow_eax) - -/* This routine handles an overflow with ecx=crfp+size. So the - * size=ecx-crfp. */ - .align align_4byte - .globl GNAME(alloc_overflow_ecx) - .type GNAME(alloc_overflow_ecx),@function + pushl %ecx # Save ecx + pushl %edx # Save edx + ALLOC_OVERFLOW(%eax) + popl %edx # Restore edx. + popl %ecx # Restore ecx. + ret + SIZE(GNAME(alloc_overflow_eax)) + + .align align_16byte + .globl GNAME(alloc_overflow_ecx) + TYPE(GNAME(alloc_overflow_ecx)) GNAME(alloc_overflow_ecx): - pushl %eax # Save eax - pushl %edx # Save edx - /* Calculate the size for the allocation. */ - subl GNAME(current_region_free_pointer),%ecx - pushl %ecx # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%ecx # setup the destination. - popl %edx # Restore edx. - popl %eax # Restore eax. - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret - .size GNAME(alloc_overflow_ecx),.-GNAME(alloc_overflow_ecx) - -/* This routine handles an overflow with edx=crfp+size. So the - * size=edx-crfp. */ - .align align_4byte - .globl GNAME(alloc_overflow_edx) - .type GNAME(alloc_overflow_edx),@function + pushl %eax # Save eax + pushl %edx # Save edx + ALLOC_OVERFLOW(%ecx) + movl %eax,%ecx # setup the destination. + popl %edx # Restore edx. + popl %eax # Restore eax. + ret + SIZE(GNAME(alloc_overflow_ecx)) + + .align align_16byte + .globl GNAME(alloc_overflow_edx) + TYPE(GNAME(alloc_overflow_edx)) GNAME(alloc_overflow_edx): - pushl %eax # Save eax - pushl %ecx # Save ecx - /* Calculate the size for the allocation. */ - subl GNAME(current_region_free_pointer),%edx - pushl %edx # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%edx # setup the destination. - popl %ecx # Restore ecx. - popl %eax # Restore eax. - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret - .size GNAME(alloc_overflow_edx),.-GNAME(alloc_overflow_edx) + pushl %eax # Save eax + pushl %ecx # Save ecx + ALLOC_OVERFLOW(%edx) + movl %eax,%edx # setup the destination. + popl %ecx # Restore ecx. + popl %eax # Restore eax. + ret + SIZE(GNAME(alloc_overflow_edx)) /* This routine handles an overflow with ebx=crfp+size. So the - * size=ebx-crfp. */ - .align align_4byte - .globl GNAME(alloc_overflow_ebx) - .type GNAME(alloc_overflow_ebx),@function + size=ebx-crfp. */ + .align align_16byte + .globl GNAME(alloc_overflow_ebx) + TYPE(GNAME(alloc_overflow_ebx)) GNAME(alloc_overflow_ebx): - pushl %eax # Save eax - pushl %ecx # Save ecx - pushl %edx # Save edx - /* Calculate the size for the allocation. */ - subl GNAME(current_region_free_pointer),%ebx - pushl %ebx # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%ebx # setup the destination. - popl %edx # Restore edx. - popl %ecx # Restore ecx. - popl %eax # Restore eax. - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret - .size GNAME(alloc_overflow_ebx),.-GNAME(alloc_overflow_ebx) + pushl %eax # Save eax + pushl %ecx # Save ecx + pushl %edx # Save edx + ALLOC_OVERFLOW(%ebx) + movl %eax,%ebx # setup the destination. + popl %edx # Restore edx. + popl %ecx # Restore ecx. + popl %eax # Restore eax. + ret + SIZE(GNAME(alloc_overflow_ebx)) /* This routine handles an overflow with esi=crfp+size. So the - * size=esi-crfp. */ - .align align_4byte - .globl GNAME(alloc_overflow_esi) - .type GNAME(alloc_overflow_esi),@function + size=esi-crfp. */ + .align align_16byte + .globl GNAME(alloc_overflow_esi) + TYPE(GNAME(alloc_overflow_esi)) GNAME(alloc_overflow_esi): - pushl %eax # Save eax - pushl %ecx # Save ecx - pushl %edx # Save edx - /* Calculate the size for the allocation. */ - subl GNAME(current_region_free_pointer),%esi - pushl %esi # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%esi # setup the destination. - popl %edx # Restore edx. - popl %ecx # Restore ecx. - popl %eax # Restore eax. - addl $6,(%esp) # Adjust the return address to skip the next inst. - ret - .size GNAME(alloc_overflow_esi),.-GNAME(alloc_overflow_esi) - -/* This routine handles an overflow with edi=crfp+size. So the - * size=edi-crfp. */ - .align align_4byte - .globl GNAME(alloc_overflow_edi) - .type GNAME(alloc_overflow_edi),@function + pushl %eax # Save eax + pushl %ecx # Save ecx + pushl %edx # Save edx + ALLOC_OVERFLOW(%esi) + movl %eax,%esi # setup the destination. + popl %edx # Restore edx. + popl %ecx # Restore ecx. + popl %eax # Restore eax. + ret + SIZE(GNAME(alloc_overflow_esi)) + + .align align_16byte + .globl GNAME(alloc_overflow_edi) + TYPE(GNAME(alloc_overflow_edi)) GNAME(alloc_overflow_edi): - pushl %eax # Save eax - pushl %ecx # Save ecx - pushl %edx # Save edx - /* Calculate the size for the allocation. */ - subl GNAME(current_region_free_pointer),%edi - pushl %edi # Push the size - call GNAME(alloc) - addl $4,%esp # pop the size arg. - movl %eax,%edi # setup the destination. - popl %edx # Restore edx. - popl %ecx # Restore ecx. - popl %eax # Restore eax. - addl $6,(%esp) # Adjust the return address to skip the next inst. + pushl %eax # Save eax + pushl %ecx # Save ecx + pushl %edx # Save edx + ALLOC_OVERFLOW(%edi) + movl %eax,%edi # setup the destination. + popl %edx # Restore edx. + popl %ecx # Restore ecx. + popl %eax # Restore eax. + ret + SIZE(GNAME(alloc_overflow_edi)) + + +#ifdef LISP_FEATURE_WIN32 + /* The guts of the exception-handling system doesn't use + * frame pointers, which manages to throw off backtraces + * rather badly. So here we grab the (known-good) EBP + * and EIP from the exception context and use it to fake + * up a stack frame which will skip over the system SEH + * code. */ + .align align_16byte + .globl GNAME(exception_handler_wrapper) + TYPE(GNAME(exception_handler_wrapper)) +GNAME(exception_handler_wrapper): + /* Context layout is: */ + /* 7 dwords before FSA. (0x1c) */ + /* 8 dwords and 0x50 bytes in the FSA. (0x70/0x8c) */ + /* 4 dwords segregs. (0x10/0x9c) */ + /* 6 dwords non-stack GPRs. (0x18/0xb4) */ + /* EBP (at 0xb4) */ + /* EIP (at 0xb8) */ +#define CONTEXT_EBP_OFFSET 0xb4 +#define CONTEXT_EIP_OFFSET 0xb8 + /* some other stuff we don't care about. */ + pushl %ebp + movl 0x10(%esp), %ebp /* context */ + pushl CONTEXT_EIP_OFFSET(%ebp) + pushl CONTEXT_EBP_OFFSET(%ebp) + movl %esp, %ebp + pushl 0x1c(%esp) + pushl 0x1c(%esp) + pushl 0x1c(%esp) + pushl 0x1c(%esp) + call GNAME(handle_exception) + lea 8(%ebp), %esp + popl %ebp ret - .size GNAME(alloc_overflow_edi),.-GNAME(alloc_overflow_edi) + SIZE(GNAME(exception_handler_wrapper)) +#endif +#ifdef LISP_FEATURE_DARWIN + .align align_16byte + .globl GNAME(call_into_lisp_tramp) + TYPE(GNAME(call_into_lisp_tramp)) +GNAME(call_into_lisp_tramp): + /* 1. build the stack frame from the block that's pointed to by ECX + 2. free the block + 3. set ECX to 0 + 4. call the function via call_into_lisp + */ + pushl 0(%ecx) /* return address */ + + pushl %ebp + movl %esp, %ebp + + pushl 32(%ecx) /* eflags */ + pushl 28(%ecx) /* EAX */ + pushl 20(%ecx) /* ECX */ + pushl 16(%ecx) /* EDX */ + pushl 24(%ecx) /* EBX */ + pushl $0 /* popal is going to ignore esp */ + pushl %ebp /* is this right?? */ + pushl 12(%ecx) /* ESI */ + pushl 8(%ecx) /* EDI */ + pushl $0 /* args for call_into_lisp */ + pushl $0 + pushl 4(%ecx) /* function to call */ + + /* free our save block */ + pushl %ecx /* reserve sufficient space on stack for args */ + pushl %ecx + andl $0xfffffff0, %esp /* align stack */ + movl $0x40, 4(%esp) + movl %ecx, (%esp) + call GNAME(os_invalidate) + + /* call call_into_lisp */ + leal -48(%ebp), %esp + call GNAME(call_into_lisp) + + /* Clean up our mess */ + leal -36(%ebp), %esp + popal + popfl + leave + ret + + SIZE(call_into_lisp_tramp) +#endif + + .align align_16byte,0x90 + .globl GNAME(post_signal_tramp) + TYPE(GNAME(post_signal_tramp)) +GNAME(post_signal_tramp): + /* this is notionally the second half of a function whose first half + * doesn't exist. This is where call_into_lisp returns when called + * using return_to_lisp_function */ + addl $12,%esp /* clear call_into_lisp args from stack */ + popal /* restore registers */ + popfl +#ifdef LISP_FEATURE_DARWIN + /* skip two padding words */ + addl $8,%esp #endif + leave + ret + SIZE(GNAME(post_signal_tramp)) + - .end + /* fast_bzero implementations and code to detect which implementation + * to use. + */ + + .globl GNAME(fast_bzero_pointer) + .data + .align align_16byte +GNAME(fast_bzero_pointer): + /* Variable containing a pointer to the bzero function to use. + * Initially points to a basic function. Change this variable + * to fast_bzero_detect if OS supports SSE. */ + .long GNAME(fast_bzero_base) + + .text + .align align_16byte,0x90 + .globl GNAME(fast_bzero) + TYPE(GNAME(fast_bzero)) +GNAME(fast_bzero): + /* Indirect function call */ + jmp *GNAME(fast_bzero_pointer) + SIZE(GNAME(fast_bzero)) + + + .text + .align align_16byte,0x90 + .globl GNAME(fast_bzero_detect) + TYPE(GNAME(fast_bzero_detect)) +GNAME(fast_bzero_detect): + /* Decide whether to use SSE, MMX or REP version */ + push %eax /* CPUID uses EAX-EDX */ + push %ebx + push %ecx + push %edx + mov $1, %eax + cpuid + test $0x04000000, %edx /* SSE2 needed for MOVNTDQ */ + jnz Lsse2 + /* Originally there was another case here for using the + * MOVNTQ instruction for processors that supported MMX but + * not SSE2. This turned out to be a loss especially on + * Athlons (where this instruction is apparently microcoded + * somewhat slowly). So for simplicity revert to REP STOSL + * for all non-SSE2 processors. + */ +Lbase: + movl $(GNAME(fast_bzero_base)), GNAME(fast_bzero_pointer) + jmp Lrestore +Lsse2: + movl $(GNAME(fast_bzero_sse)), GNAME(fast_bzero_pointer) + jmp Lrestore + +Lrestore: + pop %edx + pop %ecx + pop %ebx + pop %eax + jmp *GNAME(fast_bzero_pointer) + + SIZE(GNAME(fast_bzero_detect)) + + + .text + .align align_16byte,0x90 + .globl GNAME(fast_bzero_sse) + TYPE(GNAME(fast_bzero_sse)) + +GNAME(fast_bzero_sse): + /* A fast routine for zero-filling blocks of memory that are + * guaranteed to start and end at a 4096-byte aligned address. + */ + push %esi /* Save temporary registers */ + push %edi + mov 16(%esp), %esi /* Parameter: amount of bytes to fill */ + mov 12(%esp), %edi /* Parameter: start address */ + shr $6, %esi /* Amount of 64-byte blocks to copy */ + jz Lend_sse /* If none, stop */ + movups %xmm7, -16(%esp) /* Save XMM register */ + xorps %xmm7, %xmm7 /* Zero the XMM register */ + jmp Lloop_sse + .align align_16byte +Lloop_sse: + + /* Copy the 16 zeroes from xmm7 to memory, 4 times. MOVNTDQ is the + * non-caching double-quadword moving variant, i.e. the memory areas + * we're touching are not fetched into the L1 cache, since we're just + * going to overwrite the memory soon anyway. + */ + movntdq %xmm7, 0(%edi) + movntdq %xmm7, 16(%edi) + movntdq %xmm7, 32(%edi) + movntdq %xmm7, 48(%edi) + + add $64, %edi /* Advance pointer */ + dec %esi /* Decrement 64-byte block count */ + jnz Lloop_sse + movups -16(%esp), %xmm7 /* Restore the XMM register */ + sfence /* Ensure that weakly ordered writes are flushed. */ +Lend_sse: + mov 12(%esp), %esi /* Parameter: start address */ + prefetcht0 0(%esi) /* Prefetch the start of the block into cache, + * since it's likely to be used immediately. */ + pop %edi /* Restore temp registers */ + pop %esi + ret + SIZE(GNAME(fast_bzero_sse)) + + + .text + .align align_16byte,0x90 + .globl GNAME(fast_bzero_base) + TYPE(GNAME(fast_bzero_base)) + +GNAME(fast_bzero_base): + /* A fast routine for zero-filling blocks of memory that are + * guaranteed to start and end at a 4096-byte aligned address. + */ + push %eax /* Save temporary registers */ + push %ecx + push %edi + mov 20(%esp), %ecx /* Parameter: amount of bytes to fill */ + mov 16(%esp), %edi /* Parameter: start address */ + xor %eax, %eax /* Zero EAX */ + shr $2, %ecx /* Amount of 4-byte blocks to copy */ + jz Lend_base + + rep + stosl /* Store EAX to *EDI, ECX times, incrementing + * EDI by 4 after each store */ + +Lend_base: + pop %edi /* Restore temp registers */ + pop %ecx + pop %eax + ret + SIZE(GNAME(fast_bzero_base)) + + + END()