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### x86-assem.S -*- Mode: Asm; -*-
/**
* $Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/lisp/amd64-assem.S,v 1.5 2004/07/14 21:01:50 cwang Exp $
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*
* Authors: Paul F. Werkowski <pw@snoopy.mv.com>
* Douglas T. Crosher
* Cheuksan Edward Wang
*
* This code was written to support the port of CMU Common Lisp
* to the AMD64 ISA and the Linux operating system. The
* author has placed this code in the public domain September 1996.
*
*/
#include "x86-validate.h"
#define LANGUAGE_ASSEMBLY
#include "internals.h"
#include "lispregs.h"
#if defined __FreeBSD__
#include <osreldate.h>
#endif
/* Minimize conditionalization for different OS naming schemes */
#if defined (__linux__) || (__FreeBSD_version >= 300000) || defined (__NetBSD__)
#define GNAME(var) var
#else
#define GNAME(var) _##var
#endif
/* Get the right type of alignment. Linux wants alignment in bytes. */
#if defined (__linux__) || (__FreeBSD_version >= 300000)
#define align_4byte 4
#define align_8byte 8
#define align_16byte 16
#else
#define align_4byte 2
#define align_8byte 3
#define align_16byte 4
#endif
.text
.global GNAME(foreign_function_call_active)
/*
* The C function will preserve rbx, r12-15, and rbp across its
* function call - rbx is used to save the return lisp address.
*
* Return values are in rax, or st(0) for
* floats.
*
* It should work for lisp calls C calls lisp calls C ..
*/
.text
.align align_16byte,0x90
.global GNAME(call_into_c)
.type GNAME(call_into_c),@function
GNAME(call_into_c):
movl $1,GNAME(foreign_function_call_active)
/* Save the return lisp address in rbx */
popq %rbx
/* Setup the NPX for C */
fstp %st(0)
fstp %st(0)
fstp %st(0)
fstp %st(0)
fstp %st(0)
fstp %st(0)
fstp %st(0)
fstp %st(0)
call *%rax # normal callout using Lisp stack
movq %rax,%rcx # remember integer return value
/* Check for a return FP value */
fxam
fnstsw %eax
andl $0x4500,%eax
cmpl $0x4100,%eax
jne Lfp_rtn_value
/* The return value is in eax, or eax,edx? */
/* Setup the NPX stack for lisp */
fldz # insure no regs are empty
fldz
fldz
fldz
fldz
fldz
fldz
fldz
/* Restore the return value */
movq %rcx,%rax # maybe return value
movl $0,GNAME(foreign_function_call_active)
/* Return */
jmp *%rbx
Lfp_rtn_value:
/* The return result is in st(0) */
/* Setup the NPX stack for lisp, placing the result in st(0) */
fldz # insure no regs are empty
fldz
fldz
fldz
fldz
fldz
fldz
fxch %st(7) # move the result back to st(0)
/* Don't need to restore eax as the result is in st(0) */
movl $0,GNAME(foreign_function_call_active)
/* Return */
jmp *%ebx
.size GNAME(call_into_c), . - GNAME(call_into_c)
.text
.global GNAME(call_into_lisp)
.type GNAME(call_into_lisp),@function
/* The C conventions require that rbx, r12-r15, and rbp be preserved
across function calls. */
/* The *alien-stack* pointer is setup on the first call_into_lisp when
the stack changes. */
.align align_16byte,0x90
GNAME(call_into_lisp):
pushq %rbp # save old frame pointer
movq %rsp,%rbp # establish new frame
/* Save the NPX state */
fwait # Catch any pending NPX exceptions.
subq $108,%rsp # Make room for the NPX state.
fnsave (%rsp) # Resets NPX
movl (%rsp),%eax # Load NPX control word
andl $0xfffff3ff,%eax # Set rounding mode to nearest
#ifdef type_LongFloat
orl $0x00000300,%eax # Set precision to 64 bits
#else
orl $0x00000200,%eax # Set precision to 53 bits
#endif
pushq %rax
fldcw (%rsp) # Recover modes
popq %rax
fldz # insure no FP regs are empty
fldz
fldz
fldz
fldz
fldz
fldz
fldz
/* Save C regs: rbx r12-15 */
pushq %rbx
pushq %r12
pushq %r13
pushq %r14
pushq %r15
/* clear descriptor regs */
xorq %rax,%rax # lexenv
xorq %rbx,%rbx # available
xorq %rcx,%rcx # arg count
/* no longer in function call */
movl $0, GNAME(foreign_function_call_active)
movq %rsp,%rbx # remember current stack
cmpq $CONTROL_STACK_START,%rsp
jbe ChangeToLispStack
cmpq $CONTROL_STACK_END,%rsp
jbe OnLispStack
ChangeToLispStack:
/* Setup the *alien-stack* pointer */
movq %rsp,ALIEN_STACK + SYMBOL_VALUE_OFFSET
movq $CONTROL_STACK_END,%rsp # New stack
OnLispStack:
pushq %rbx # save entry stack on (maybe) new stack
/* establish lisp args */
movq %rdi,%rax # lexenv? (C arg 1)
xorq %rdi,%rdi # clear second arg (lisp)
movq %rsi,%rbx # address of arg vec (C arg 2)
xorq %rsi,%rsi # clear third arg (lisp)
movq %rdx,%rcx # num args (C arg 3)
xorq %rdx,%rdx # clear first arg (lisp)
shlq $2,%rcx # make into fixnum
cmpq $0,%rcx
je Ldone
movq (%rbx),%rdx # arg0
cmpq $4,%rcx
je Ldone
movq 8(%rbx),%rdi # arg1
cmpq $8,%rcx
je Ldone
movq 16(%rbx),%rsi # arg2
Ldone:
/* Registers rax (lexenv), rcx (num args), rdx (arg 0),rdi (arg 1),rsi (arg 2) now live */
/* Allocate new frame */
mov %rsp,%rbx # current sp marks start of new frame
push %rbp # fp in save location S0
sub $16,%rsp # Ensure 3 slots are allocated, one above.
mov %rbx,%rbp # switch to new frame
/* Indirect the closure */
call *CLOSURE_FUNCTION_OFFSET(%rax)
/* Multi-value return - blow off any extra values */
mov %rbx, %rsp
/* Single value return */
/* Restore the stack, in case there was a stack change. */
popq %rsp # c-sp
/* Restore C regs: rbx esi edi */
popq %r15
popq %r14
popq %r13
popq %r12
popq %rbx
/* Restore the NPX state */
frstor (%rsp)
addq $108, %rsp
popq %rbp # c-fp
movq %rdx,%rax # c-val
ret
.size GNAME(call_into_lisp), . - GNAME(call_into_lisp)
/* Support for saving and restoring the NPX state from C. */
.text
.global GNAME(fpu_save)
.type GNAME(fpu_save),@function
.align 2,0x90
GNAME(fpu_save):
#if TOO_LAME_TO_PORT_IT_YET
movl 4(%esp),%eax
fnsave (%eax) # Save the NPX state - Resets NPX
#endif
ret
.size GNAME(fpu_save),.-GNAME(fpu_save)
.global GNAME(fpu_restore)
.type GNAME(fpu_restore),@function
.align 2,0x90
GNAME(fpu_restore):
#if TOO_LAME_TO_PORT_IT_YET
movl 4(%esp),%eax
frstor (%eax) # Restore the NPX state.
#endif
ret
.size GNAME(fpu_restore),.-GNAME(fpu_restore)
/*
* The undefined-function trampoline.
*/
.text
.align align_4byte,0x90
.global GNAME(undefined_tramp)
.type GNAME(undefined_tramp),@function
GNAME(undefined_tramp):
int3
.byte trap_Error
/* Number of argument bytes */
.byte 2
.byte UNDEFINED_SYMBOL_ERROR
/* SC_OFFSET(sc_DescriptorReg,reg_RAX) */
.byte SC_OFFSET(sc_DescriptorReg,0)
ret
.size GNAME(undefined_tramp), .-GNAME(undefined_tramp)
/*
* The closure trampoline.
*/
.text
.align align_4byte,0x90
.global GNAME(closure_tramp)
.type GNAME(closure_tramp),@function
GNAME(closure_tramp):
movq FDEFN_FUNCTION_OFFSET(%rax),%rax
jmp *CLOSURE_FUNCTION_OFFSET(%rax)
.size GNAME(closure_tramp), .-GNAME(closure_tramp)
/*
* Function-end breakpoint magic.
*/
.text
.global GNAME(function_end_breakpoint_guts)
.align align_4byte
GNAME(function_end_breakpoint_guts):
/* Multiple Value return */
jmp 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
multiple_value_return:
.global GNAME(function_end_breakpoint_trap)
GNAME(function_end_breakpoint_trap):
int3
.byte trap_FunctionEndBreakpoint
hlt # Should never return here.
.global GNAME(function_end_breakpoint_end)
GNAME(function_end_breakpoint_end):
.global GNAME(do_pending_interrupt)
.type GNAME(do_pending_interrupt),@function
.align align_4byte,0x90
GNAME(do_pending_interrupt):
int3
.byte trap_PendingInterrupt
ret
.size GNAME(do_pending_interrupt),.-GNAME(do_pending_interrupt)
#ifdef trap_DynamicSpaceOverflowError
.global GNAME(do_dynamic_space_overflow_error)
.type GNAME(do_dynamic_space_overflow_error),@function
.align align_4byte,0x90
GNAME(do_dynamic_space_overflow_error):
int3
.byte trap_DynamicSpaceOverflowError
ret
.size GNAME(do_dynamic_space_overflow_error),.-GNAME(do_dynamic_space_overflow_error)
#endif
#ifdef trap_DynamicSpaceOverflowWarning
.global GNAME(do_dynamic_space_overflow_warning)
.type GNAME(do_dynamic_space_overflow_warning),@function
.align align_4byte,0x90
GNAME(do_dynamic_space_overflow_warning):
int3
.byte trap_DynamicSpaceOverflowWarning
ret
.size GNAME(do_dynamic_space_overflow_warning),.-GNAME(do_dynamic_space_overflow_warning)
#endif
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#ifdef WANT_CGC
/* A copy function optimized for the Pentium and works ok on
* 486 as well. This assumes (does not check) that the input
* byte count is a multiple of 8-bytes (one lisp object).
* This code takes advantage of pairing in the Pentium as well
* as the 128-bit cache line.
*/
.global GNAME(fastcopy16)
.type GNAME(fastcopy16),@function
.align align_4byte,0x90
GNAME(fastcopy16):
#if TOO_LAME_TO_PORT_IT_YET
pushl %ebp
#endif
movl %esp,%ebp
movl 8(%ebp), %edx # dst
movl 12(%ebp),%eax # src
movl 16(%ebp),%ecx # bytes
#if TOO_LAME_TO_PORT_IT_YET
pushl %ebx
pushl %esi
pushl %edi
#endif
movl %edx,%edi
movl %eax,%esi
sarl $3,%ecx # number 8-byte units
testl $1,%ecx # odd?
jz Lquad
movl (%esi),%eax
movl 4(%esi),%ebx
movl %eax,(%edi)
movl %ebx,4(%edi)
leal 8(%esi),%esi
leal 8(%edi),%edi
Lquad: sarl $1,%ecx # count 16-byte units
jz Lend
movl %ecx,%ebp # use ebp for loop counter
.align align_16byte,0x90
Ltop:
movl (%edi),%eax #prefetch! MAJOR Pentium win.
movl (%esi),%eax
movl 4(%esi),%ebx
movl 8(%esi),%ecx
movl 12(%esi),%edx
movl %eax, (%edi)
movl %ebx, 4(%edi)
movl %ecx, 8(%edi)
movl %edx,12(%edi)
leal 16(%esi),%esi
leal 16(%edi),%edi
decl %ebp
jnz Ltop # non-prefixed jump saves cycles
Lend:
popl %edi
popl %esi
popl %ebx
popl %ebp
ret
.size GNAME(fastcopy16),.-GNAME(fastcopy16)
#endif
#ifdef GENCGC
/* 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 needs to be a multiple of 8 bytes and
not zero. */
.text
.globl GNAME(i586_bzero)
.type GNAME(i586_bzero),@function
.align align_4byte,0x90
GNAME(i586_bzero):
#if TOO_LAME_TO_PORT_IT_YET
movl 4(%esp),%edx # Load the start address
movl 8(%esp),%eax # Load the number of bytes
#endif
fldz
#if TOO_LAME_TO_PORT_IT_YET
l1: fstl 0(%edx)
#else
l1: nop
#endif
addl $8,%edx
subl $8,%eax
jnz l1
fstp %st(0)
ret
.size GNAME(i586_bzero),.-GNAME(i586_bzero)
#endif
/*
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.
All registers must be preserved except the destination.
The C conventions will preserve rbx, r12-r15, and rbp.
So only rax, rdi, rsi, rdx, rcx, and r8-r11 need special care here. */
.globl GNAME(alloc_to_rax)
.type GNAME(alloc_to_rax),@function
.align align_4byte,0x90
GNAME(alloc_to_rax):
pushq %rcx # Save rcx, rdx, rdi, rsi, r8-r11 as C could destroy them.
pushq %rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
movq %rax, %rdi # Pass arg 1
call GNAME(alloc) # return value is in %rax
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rcx and rdx.
popq %rcx
ret
.size GNAME(alloc_to_rax),.-GNAME(alloc_to_rax)
.globl GNAME(alloc_to_rcx)
.type GNAME(alloc_to_rcx),@function
.align align_4byte,0x90
GNAME(alloc_to_rcx):
pushq %rax # Save rax, rdi, rsi, rdx, and r8-r11 as C could destroy them.
pushq %rdi
pushq %rsi
pushq %rdx
pushq %r8
pushq %r9
pushq %r10
pushq %r11
movq %rcx, %rdi # Pass the size
call GNAME(alloc)
movq %rax, %rcx # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rdx # Restore
popq %rsi
popq %rdi
popq %rax
ret
.size GNAME(alloc_to_rcx),.-GNAME(alloc_to_rcx)
.globl GNAME(alloc_to_rdx)
.type GNAME(alloc_to_rdx),@function
.align align_4byte,0x90
GNAME(alloc_to_rdx):
pushq %rax # Save rax, rcx, rdi, rsi, r8-r11 as C could destroy them.
pushq %rcx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
mov %rdx, %rdi # move the size to arg 1
call GNAME(alloc)
movq %rax, %rdx # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi # Restore rdi, rax, and rcx.
popq %rcx
popq %rax
ret
.size GNAME(alloc_to_rdx),.-GNAME(alloc_to_rdx)
.globl GNAME(alloc_to_rbx)
.type GNAME(alloc_to_rbx),@function
.align align_4byte,0x90
GNAME(alloc_to_rbx):
pushq %rax # Save rax, rcx, rdx, rdi, rsi, r8-r11 as C could destroy them.
pushq %rcx
pushq %rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
movq %rbx, %rdi # Pass the size
call GNAME(alloc)
movq %rax, %rbx # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rax, rcx, rdx, rdi, rsi, r8-r11.
popq %rcx
popq %rax
ret
.size GNAME(alloc_to_rbx),.-GNAME(alloc_to_rbx)
.globl GNAME(alloc_to_rsi)
.type GNAME(alloc_to_rsi),@function
.align align_4byte,0x90
GNAME(alloc_to_rsi):
pushq %rax # Save rax, rcx, rdx, rdi, r8-r11 as C could destroy them.
pushq %rcx
pushq %rdx
pushq %rdi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
mov %rsi, %rdi # move the size to arg 1
call GNAME(alloc)
movq %rax,%rsi # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rdi # Restore rdi, rax, rcx and rdx.
popq %rdx
popq %rcx
popq %rax
ret
.size GNAME(alloc_to_rsi),.-GNAME(alloc_to_rsi)
.globl GNAME(alloc_to_rdi)
.type GNAME(alloc_to_rdi),@function
.align align_4byte,0x90
GNAME(alloc_to_rdi):
pushq %rax # Save rax, rcx, rdx, rsi, r8-r11 as C could destroy them.
pushq %rcx
pushq %rdx
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
call GNAME(alloc)
movq %rax, %rdi # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdx # Restore rax, rcx and rdx.
popq %rcx
popq %rax
ret
.size GNAME(alloc_to_rdi),.-GNAME(alloc_to_rdi)
#ifdef GENCGC
/* Called from lisp when an inline allocation overflows.
Every register except the result needs to be preserved.
We depend on C to preserve rbx, r12-r15, and rbp.
But where necessary must save rax, rcx, rdx, rdi, rsi, r8-r11. */
/* This routine handles an overflow with rax=crfp+size. So the
size=rax-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_rax)
.type GNAME(alloc_overflow_rax),@function
GNAME(alloc_overflow_rax):
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%rax
movq %rax, %rdi # Pass arg 1
call GNAME(alloc)
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
addq $13,(%rsp) # Adjust the return address to skip the next inst.
ret
.size GNAME(alloc_overflow_rax),.-GNAME(alloc_overflow_rax)
/* This routine handles an overflow with rcx=crfp+size. So the
size=rcx-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_rcx)
.type GNAME(alloc_overflow_rcx),@function
GNAME(alloc_overflow_rcx):
pushq %rax # Save rax
pushq %rdx # Save rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%rcx
movq %rcx, %rdi # Pass arg1
call GNAME(alloc)
movq %rax, %rcx # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rdx.
popq %rax # Restore rax.
addq $13,(%rsp) # Adjust the return address to skip the next 2 inst.
ret
.size GNAME(alloc_overflow_rcx),.-GNAME(alloc_overflow_rcx)
/* This routine handles an overflow with rdx=crfp+size. So the
size=rdx-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_rdx)
.type GNAME(alloc_overflow_rdx),@function
GNAME(alloc_overflow_rdx):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%rdx
movq %rdx, %rdi # Move the size
call GNAME(alloc)
movq %rax,%rdx # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addq $13,(%rsp) # Adjust the return address to skip the next 2 inst.
# The next 2 instructions sets the CRFP.
ret
.size GNAME(alloc_overflow_rdx),.-GNAME(alloc_overflow_rdx)
/* This routine handles an overflow with rbx=crfp+size. So the
size=rbx-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_rbx)
.type GNAME(alloc_overflow_rbx),@function
GNAME(alloc_overflow_rbx):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%rbx
movq %rbx, %rdi # Pass arg 1
call GNAME(alloc)
movq %rax,%rbx # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addq $13,(%rsp) # Adjust the return address to skip the next 2 inst.
ret
.size GNAME(alloc_overflow_rbx),.-GNAME(alloc_overflow_rbx)
/* This routine handles an overflow with rsi=crfp+size. So the
size=rsi-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_rsi)
.type GNAME(alloc_overflow_rsi),@function
GNAME(alloc_overflow_rsi):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rdi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%rsi
movq %rsi, %rdi # Pass arg 1
call GNAME(alloc)
movq %rax, %rsi # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rdi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addq $13,(%rsp) # Adjust the return address to skip the next 2 inst.
ret
.size GNAME(alloc_overflow_rsi),.-GNAME(alloc_overflow_rsi)
/* This routine handles an overflow with rdi=crfp+size. So the
size=rdi-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_rdi)
.type GNAME(alloc_overflow_rdi),@function
GNAME(alloc_overflow_rdi):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%rdi
call GNAME(alloc)
movq %rax,%rdi # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addl $13,(%rsp) # Adjust the return address to skip the next inst.
ret
.size GNAME(alloc_overflow_rdi),.-GNAME(alloc_overflow_rdi)
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
/* This routine handles an overflow with r8=crfp+size. So the
size=r8-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_r8)
.type GNAME(alloc_overflow_r8),@function
GNAME(alloc_overflow_r8):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rdi
pushq %rsi
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%r8
movq %r8, %rdi # Pass arg 1
call GNAME(alloc)
movq %rax,%r8 # setup the destination.
popq %r11
popq %r10
popq %r9
popq %rsi
popq %rdi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addl $13,(%rsp) # Adjust the return address to skip the next inst.
ret
.size GNAME(alloc_overflow_r8),.-GNAME(alloc_overflow_r8)
/* This routine handles an overflow with r9=crfp+size. So the
size=r9-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_r9)
.type GNAME(alloc_overflow_r9),@function
GNAME(alloc_overflow_r9):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%r9
movq %r9, %rdi # Pass arg 1
call GNAME(alloc)
movq %rax,%r9 # setup the destination.
popq %r11
popq %r10
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addl $13,(%rsp) # Adjust the return address to skip the next inst.
ret
.size GNAME(alloc_overflow_r9),.-GNAME(alloc_overflow_r9)
/* This routine handles an overflow with r10=crfp+size. So the
size=r10-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_r10)
.type GNAME(alloc_overflow_r10),@function
GNAME(alloc_overflow_r10):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%r10
movq %r10, %rdi # Pass arg 1
call GNAME(alloc)
movq %rax,%r10 # setup the destination.
popq %r11
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addl $13,(%rsp) # Adjust the return address to skip the next inst.
ret
.size GNAME(alloc_overflow_r10),.-GNAME(alloc_overflow_r10)
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
/* r11 is used by linkage table */
/* This routine handles an overflow with r12=crfp+size. So the
size=r12-crfp. */
.align align_4byte
.globl GNAME(alloc_overflow_r12)
.type GNAME(alloc_overflow_r12),@function
GNAME(alloc_overflow_r12):
pushq %rax # Save rax
pushq %rcx # Save rcx
pushq %rdx # Save rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
/* Calculate the size for the allocation. */
subq CURRENT_REGION_FREE_POINTER + SYMBOL_VALUE_OFFSET,%r12
movq %r12, %rdi # Pass arg 1
call GNAME(alloc)
movq %rax,%r12 # setup the destination.
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx # Restore rdx.
popq %rcx # Restore rcx.
popq %rax # Restore rax.
addl $13,(%rsp) # Adjust the return address to skip the next inst.
ret
.size GNAME(alloc_overflow_r12),.-GNAME(alloc_overflow_r12)
#endif
#ifdef LINKAGE_TABLE
/* Call into C code to resolve a linkage entry. The initial code in the
* linkage entry has done a call to here; pass that return entry along as a
* parameter.
*
* We could be called from raw Lisp code or from a foreign call site, so we
* have to save all the registers...
*/
.align align_4byte
.globl GNAME(resolve_linkage_tramp)
.type GNAME(resolve_linkage_tramp),@function
GNAME(resolve_linkage_tramp):
pushq %rbp # save old frame pointer
movq %rsp,%rbp # establish new frame
pushq %rax
pushq %rcx
pushq %rdx
pushq %rdi
pushq %rsi
pushq %r8
pushq %r9
pushq %r10
pushq %r11
# r12-15 is callee saved
/* calling location (plus offset) was on top of stack */
movq 8(%rbp), %rdi # arg 1 for C function
call GNAME(lazy_resolve_linkage)
/* real address of target is in %rax. Replace return address on stack
* with it. That way we can get out of here without trashing any
* registers!
*/
movq %rax,8(%rbp)
popq %r11
popq %r10
popq %r9
popq %r8
popq %rsi
popq %rdi
popq %rdx
popq %rcx
popq %rax
popq %rbp
ret # jump to the real target
.size GNAME(resolve_linkage_tramp),.-GNAME(resolve_linkage_tramp)
/*
* The C-callable undefined-foreign-symbol trapping function.
*/
.text
.align align_4byte,0x90