/* ———————————————————————–

sysv.S - Copyright (c) 2017  Anthony Green
       - Copyright (c) 2013  The Written Word, Inc.
       - Copyright (c) 1996,1998,2001-2003,2005,2008,2010  Red Hat, Inc.

X86 Foreign Function Interface 

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */

ifdef i386 ifndef _MSC_VER

define LIBFFI_ASM

include <fficonfig.h> include <ffi.h> include “internal.h”

define C2(X, Y) X ## Y define C1(X, Y) C2(X, Y) ifdef USER_LABEL_PREFIX # define C(X) C1(USER_LABEL_PREFIX, X) else # define C(X) X endif

ifdef X86_DARWIN # define L(X) C1(L, X) else # define L(X) C1(.L, X) endif

ifdef __ELF__ # define ENDF(X) .type X,@function; .size X, . - X else # define ENDF(X) endif

/* Handle win32 fastcall name mangling. */ ifdef X86_WIN32 # define ffi_call_i386 “@ffi_call_i386@8” # define ffi_closure_inner “@ffi_closure_inner@8” else # define ffi_call_i386 C(ffi_call_i386) # define ffi_closure_inner C(ffi_closure_inner) endif

/* This macro allows the safe creation of jump tables without an

actual table.  The entry points into the table are all 8 bytes.
The use of ORG asserts that we're at the correct location.  */

/* ??? The clang assembler doesn’t handle .org with symbolic expressions. */ if defined(__clang__) || defined(__APPLE__) || (defined (__sun__) && defined(svr4)) # define E(BASE, X) .balign 8 else # define E(BASE, X) .balign 8; .org BASE + X * 8 endif

.text
.balign 16
.globl  ffi_call_i386
FFI_HIDDEN(ffi_call_i386)

/* This is declared as

void ffi_call_i386(struct call_frame *frame, char *argp)
     __attribute__((fastcall));

Thus the arguments are present in

     ecx: frame
     edx: argp

*/

ffi_call_i386: L(UW0):

# cfi_startproc
_CET_ENDBR

if !HAVE_FASTCALL

movl    4(%esp), %ecx
movl    8(%esp), %edx

endif

movl    (%esp), %eax            /* move the return address */
movl    %ebp, (%ecx)            /* store %ebp into local frame */
movl    %eax, 4(%ecx)           /* store retaddr into local frame */

/* New stack frame based off ebp.  This is a itty bit of unwind
   trickery in that the CFA *has* changed.  There is no easy way
   to describe it correctly on entry to the function.  Fortunately,
   it doesn't matter too much since at all points we can correctly
   unwind back to ffi_call.  Note that the location to which we
   moved the return address is (the new) CFA-4, so from the
   perspective of the unwind info, it hasn't moved.  */
movl    %ecx, %ebp

L(UW1):

# cfi_def_cfa(%ebp, 8)
# cfi_rel_offset(%ebp, 0)

movl    %edx, %esp              /* set outgoing argument stack */
movl    20+R_EAX*4(%ebp), %eax  /* set register arguments */
movl    20+R_EDX*4(%ebp), %edx
movl    20+R_ECX*4(%ebp), %ecx

call    *8(%ebp)

movl    12(%ebp), %ecx          /* load return type code */
movl    %ebx, 8(%ebp)           /* preserve %ebx */

L(UW2):

# cfi_rel_offset(%ebx, 8)

andl    $X86_RET_TYPE_MASK, %ecx

ifdef __PIC__

call    C(__x86.get_pc_thunk.bx)

L(pc1):

leal    L(store_table)-L(pc1)(%ebx, %ecx, 8), %ebx

else

leal    L(store_table)(,%ecx, 8), %ebx

endif

movl    16(%ebp), %ecx          /* load result address */
_CET_NOTRACK jmp *%ebx

.balign 8

L(store_table): E(L(store_table), X86_RET_FLOAT)

fstps   (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_DOUBLE)

fstpl   (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_LDOUBLE)

fstpt   (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_SINT8)

movsbl  %al, %eax
mov     %eax, (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_SINT16)

movswl  %ax, %eax
mov     %eax, (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_UINT8)

movzbl  %al, %eax
mov     %eax, (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_UINT16)

movzwl  %ax, %eax
mov     %eax, (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_INT64)

movl    %edx, 4(%ecx)
/* fallthru */

E(L(store_table), X86_RET_INT32)

movl    %eax, (%ecx)
/* fallthru */

E(L(store_table), X86_RET_VOID) L(e1):

movl    8(%ebp), %ebx
movl    %ebp, %esp
popl    %ebp

L(UW3):

# cfi_remember_state
# cfi_def_cfa(%esp, 4)
# cfi_restore(%ebx)
# cfi_restore(%ebp)
ret

L(UW4):

# cfi_restore_state

E(L(store_table), X86_RET_STRUCTPOP)

jmp     L(e1)

E(L(store_table), X86_RET_STRUCTARG)

jmp     L(e1)

E(L(store_table), X86_RET_STRUCT_1B)

movb    %al, (%ecx)
jmp     L(e1)

E(L(store_table), X86_RET_STRUCT_2B)

movw    %ax, (%ecx)
jmp     L(e1)

/* Fill out the table so that bad values are predictable.  */

E(L(store_table), X86_RET_UNUSED14)

ud2

E(L(store_table), X86_RET_UNUSED15)

ud2

L(UW5):

# cfi_endproc

ENDF(ffi_call_i386)

/* The inner helper is declared as

void ffi_closure_inner(struct closure_frame *frame, char *argp)
     __attribute_((fastcall))

Thus the arguments are placed in

     ecx:    frame
     edx:    argp

*/

/* Macros to help setting up the closure_data structure. */

if HAVE_FASTCALL # define closure_FS (40 + 4) # define closure_CF 0 else # define closure_FS (8 + 40 + 12) # define closure_CF 8 endif

define FFI_CLOSURE_SAVE_REGS \

movl    %eax, closure_CF+16+R_EAX*4(%esp);      \
movl    %edx, closure_CF+16+R_EDX*4(%esp);      \
movl    %ecx, closure_CF+16+R_ECX*4(%esp)

define FFI_CLOSURE_COPY_TRAMP_DATA \

movl    FFI_TRAMPOLINE_SIZE(%eax), %edx;        /* copy cif */  \
movl    FFI_TRAMPOLINE_SIZE+4(%eax), %ecx;      /* copy fun */  \
movl    FFI_TRAMPOLINE_SIZE+8(%eax), %eax;      /* copy user_data */ \
movl    %edx, closure_CF+28(%esp);                              \
movl    %ecx, closure_CF+32(%esp);                              \
movl    %eax, closure_CF+36(%esp)

if HAVE_FASTCALL # define FFI_CLOSURE_PREP_CALL \

movl    %esp, %ecx;                     /* load closure_data */ \
leal    closure_FS+4(%esp), %edx;       /* load incoming stack */

else # define FFI_CLOSURE_PREP_CALL \

leal    closure_CF(%esp), %ecx;         /* load closure_data */ \
leal    closure_FS+4(%esp), %edx;       /* load incoming stack */ \
movl    %ecx, (%esp);                                           \
movl    %edx, 4(%esp)

endif

define FFI_CLOSURE_CALL_INNER(UWN) \

call    ffi_closure_inner

define FFI_CLOSURE_MASK_AND_JUMP(N, UW) \

andl    $X86_RET_TYPE_MASK, %eax;                               \
leal    L(C1(load_table,N))(, %eax, 8), %edx;                   \
movl    closure_CF(%esp), %eax;         /* optimiztic load */   \
_CET_NOTRACK jmp *%edx

ifdef __PIC__ # if defined X86_DARWIN || defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE # undef FFI_CLOSURE_MASK_AND_JUMP # define FFI_CLOSURE_MASK_AND_JUMP(N, UW) \

andl    $X86_RET_TYPE_MASK, %eax;                               \
call    C(__x86.get_pc_thunk.dx);                               \

L(C1(pc,N)): \

leal    L(C1(load_table,N))-L(C1(pc,N))(%edx, %eax, 8), %edx;   \
movl    closure_CF(%esp), %eax;         /* optimiztic load */   \
_CET_NOTRACK jmp *%edx

# else # define FFI_CLOSURE_CALL_INNER_SAVE_EBX # undef FFI_CLOSURE_CALL_INNER # define FFI_CLOSURE_CALL_INNER(UWN) \

movl    %ebx, 40(%esp);                 /* save ebx */          \

L(C1(UW,UWN)): \

/* cfi_rel_offset(%ebx, 40); */                                 \
call    C(__x86.get_pc_thunk.bx);       /* load got register */ \
addl    $C(_GLOBAL_OFFSET_TABLE_), %ebx;                        \
call    ffi_closure_inner@PLT

# undef FFI_CLOSURE_MASK_AND_JUMP # define FFI_CLOSURE_MASK_AND_JUMP(N, UWN) \

andl    $X86_RET_TYPE_MASK, %eax;                               \
leal    L(C1(load_table,N))@GOTOFF(%ebx, %eax, 8), %edx;        \
movl    40(%esp), %ebx;                 /* restore ebx */       \

L(C1(UW,UWN)): \

/* cfi_restore(%ebx); */                                        \
movl    closure_CF(%esp), %eax;         /* optimiztic load */   \
_CET_NOTRACK jmp *%edx

# endif /* DARWIN || HIDDEN */ endif /* __PIC__ */

.balign 16
.globl  C(ffi_go_closure_EAX)
FFI_HIDDEN(C(ffi_go_closure_EAX))

C(ffi_go_closure_EAX): L(UW6):

# cfi_startproc
_CET_ENDBR
subl    $closure_FS, %esp

L(UW7):

# cfi_def_cfa_offset(closure_FS + 4)
FFI_CLOSURE_SAVE_REGS
movl    4(%eax), %edx                   /* copy cif */
movl    8(%eax), %ecx                   /* copy fun */
movl    %edx, closure_CF+28(%esp)
movl    %ecx, closure_CF+32(%esp)
movl    %eax, closure_CF+36(%esp)       /* closure is user_data */
jmp     L(do_closure_i386)

L(UW8):

# cfi_endproc

ENDF(C(ffi_go_closure_EAX))

.balign 16
.globl  C(ffi_go_closure_ECX)
FFI_HIDDEN(C(ffi_go_closure_ECX))

C(ffi_go_closure_ECX): L(UW9):

# cfi_startproc
_CET_ENDBR
subl    $closure_FS, %esp

L(UW10):

# cfi_def_cfa_offset(closure_FS + 4)
FFI_CLOSURE_SAVE_REGS
movl    4(%ecx), %edx                   /* copy cif */
movl    8(%ecx), %eax                   /* copy fun */
movl    %edx, closure_CF+28(%esp)
movl    %eax, closure_CF+32(%esp)
movl    %ecx, closure_CF+36(%esp)       /* closure is user_data */
jmp     L(do_closure_i386)

L(UW11):

# cfi_endproc

ENDF(C(ffi_go_closure_ECX))

/* The closure entry points are reached from the ffi_closure trampoline.

On entry, %eax contains the address of the ffi_closure.  */

     .balign 16
     .globl  C(ffi_closure_i386)
     FFI_HIDDEN(C(ffi_closure_i386))

C(ffi_closure_i386): L(UW12):

# cfi_startproc
_CET_ENDBR
subl    $closure_FS, %esp

L(UW13):

# cfi_def_cfa_offset(closure_FS + 4)

FFI_CLOSURE_SAVE_REGS
FFI_CLOSURE_COPY_TRAMP_DATA

/* Entry point from preceeding Go closures.  */

L(do_closure_i386):

FFI_CLOSURE_PREP_CALL
FFI_CLOSURE_CALL_INNER(14)
FFI_CLOSURE_MASK_AND_JUMP(2, 15)

.balign 8

L(load_table2): E(L(load_table2), X86_RET_FLOAT)

flds    closure_CF(%esp)
jmp     L(e2)

E(L(load_table2), X86_RET_DOUBLE)

fldl    closure_CF(%esp)
jmp     L(e2)

E(L(load_table2), X86_RET_LDOUBLE)

fldt    closure_CF(%esp)
jmp     L(e2)

E(L(load_table2), X86_RET_SINT8)

movsbl  %al, %eax
jmp     L(e2)

E(L(load_table2), X86_RET_SINT16)

movswl  %ax, %eax
jmp     L(e2)

E(L(load_table2), X86_RET_UINT8)

movzbl  %al, %eax
jmp     L(e2)

E(L(load_table2), X86_RET_UINT16)

movzwl  %ax, %eax
jmp     L(e2)

E(L(load_table2), X86_RET_INT64)

movl    closure_CF+4(%esp), %edx
jmp     L(e2)

E(L(load_table2), X86_RET_INT32)

nop
/* fallthru */

E(L(load_table2), X86_RET_VOID) L(e2):

addl    $closure_FS, %esp

L(UW16):

# cfi_adjust_cfa_offset(-closure_FS)
ret

L(UW17):

# cfi_adjust_cfa_offset(closure_FS)

E(L(load_table2), X86_RET_STRUCTPOP)

addl    $closure_FS, %esp

L(UW18):

# cfi_adjust_cfa_offset(-closure_FS)
ret     $4

L(UW19):

# cfi_adjust_cfa_offset(closure_FS)

E(L(load_table2), X86_RET_STRUCTARG)

jmp     L(e2)

E(L(load_table2), X86_RET_STRUCT_1B)

movzbl  %al, %eax
jmp     L(e2)

E(L(load_table2), X86_RET_STRUCT_2B)

movzwl  %ax, %eax
jmp     L(e2)

/* Fill out the table so that bad values are predictable.  */

E(L(load_table2), X86_RET_UNUSED14)

ud2

E(L(load_table2), X86_RET_UNUSED15)

ud2

L(UW20):

# cfi_endproc

ENDF(C(ffi_closure_i386))

.balign 16
.globl  C(ffi_go_closure_STDCALL)
FFI_HIDDEN(C(ffi_go_closure_STDCALL))

C(ffi_go_closure_STDCALL): L(UW21):

# cfi_startproc
_CET_ENDBR
subl    $closure_FS, %esp

L(UW22):

# cfi_def_cfa_offset(closure_FS + 4)
FFI_CLOSURE_SAVE_REGS
movl    4(%ecx), %edx                   /* copy cif */
movl    8(%ecx), %eax                   /* copy fun */
movl    %edx, closure_CF+28(%esp)
movl    %eax, closure_CF+32(%esp)
movl    %ecx, closure_CF+36(%esp)       /* closure is user_data */
jmp     L(do_closure_STDCALL)

L(UW23):

# cfi_endproc

ENDF(C(ffi_go_closure_STDCALL))

/* For REGISTER, we have no available parameter registers, and so we

enter here having pushed the closure onto the stack.  */

     .balign 16
     .globl  C(ffi_closure_REGISTER)
     FFI_HIDDEN(C(ffi_closure_REGISTER))

C(ffi_closure_REGISTER): L(UW24):

# cfi_startproc
# cfi_def_cfa(%esp, 8)
# cfi_offset(%eip, -8)
_CET_ENDBR
subl    $closure_FS-4, %esp

L(UW25):

# cfi_def_cfa_offset(closure_FS + 4)
FFI_CLOSURE_SAVE_REGS
movl    closure_FS-4(%esp), %ecx        /* load retaddr */
movl    closure_FS(%esp), %eax          /* load closure */
movl    %ecx, closure_FS(%esp)          /* move retaddr */
jmp     L(do_closure_REGISTER)

L(UW26):

# cfi_endproc

ENDF(C(ffi_closure_REGISTER))

/* For STDCALL (and others), we need to pop N bytes of arguments off

the stack following the closure.  The amount needing to be popped
is returned to us from ffi_closure_inner.  */

     .balign 16
     .globl  C(ffi_closure_STDCALL)
     FFI_HIDDEN(C(ffi_closure_STDCALL))

C(ffi_closure_STDCALL): L(UW27):

# cfi_startproc
_CET_ENDBR
subl    $closure_FS, %esp

L(UW28):

# cfi_def_cfa_offset(closure_FS + 4)

FFI_CLOSURE_SAVE_REGS

/* Entry point from ffi_closure_REGISTER.  */

L(do_closure_REGISTER):

FFI_CLOSURE_COPY_TRAMP_DATA

/* Entry point from preceeding Go closure.  */

L(do_closure_STDCALL):

FFI_CLOSURE_PREP_CALL
FFI_CLOSURE_CALL_INNER(29)

movl    %eax, %ecx
shrl    $X86_RET_POP_SHIFT, %ecx        /* isolate pop count */
leal    closure_FS(%esp, %ecx), %ecx    /* compute popped esp */
movl    closure_FS(%esp), %edx          /* move return address */
movl    %edx, (%ecx)

/* From this point on, the value of %esp upon return is %ecx+4,
   and we've copied the return address to %ecx to make return easy.
   There's no point in representing this in the unwind info, as
   there is always a window between the mov and the ret which
   will be wrong from one point of view or another.  */

FFI_CLOSURE_MASK_AND_JUMP(3, 30)

.balign 8

L(load_table3): E(L(load_table3), X86_RET_FLOAT)

flds    closure_CF(%esp)
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_DOUBLE)

fldl    closure_CF(%esp)
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_LDOUBLE)

fldt    closure_CF(%esp)
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_SINT8)

movsbl  %al, %eax
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_SINT16)

movswl  %ax, %eax
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_UINT8)

movzbl  %al, %eax
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_UINT16)

movzwl  %ax, %eax
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_INT64)

movl    closure_CF+4(%esp), %edx
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_INT32)

movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_VOID)

movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_STRUCTPOP)

movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_STRUCTARG)

movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_STRUCT_1B)

movzbl  %al, %eax
movl    %ecx, %esp
ret

E(L(load_table3), X86_RET_STRUCT_2B)

movzwl  %ax, %eax
movl    %ecx, %esp
ret

/* Fill out the table so that bad values are predictable.  */

E(L(load_table3), X86_RET_UNUSED14)

ud2

E(L(load_table3), X86_RET_UNUSED15)

ud2

L(UW31):

# cfi_endproc

ENDF(C(ffi_closure_STDCALL))

if defined(FFI_EXEC_STATIC_TRAMP)

.balign 16
.globl  C(ffi_closure_i386_alt)
FFI_HIDDEN(C(ffi_closure_i386_alt))

C(ffi_closure_i386_alt):

/* See the comments above trampoline_code_table. */
_CET_ENDBR
movl    4(%esp), %eax                   /* Load closure in eax */
add     $8, %esp                        /* Restore the stack */
jmp     C(ffi_closure_i386)

ENDF(C(ffi_closure_i386_alt))

.balign 16
.globl  C(ffi_closure_REGISTER_alt)
FFI_HIDDEN(C(ffi_closure_REGISTER_alt))

C(ffi_closure_REGISTER_alt):

/* See the comments above trampoline_code_table. */
_CET_ENDBR
movl    (%esp), %eax                    /* Restore eax */
add     $4, %esp                        /* Leave closure on stack */
jmp     C(ffi_closure_REGISTER)

ENDF(C(ffi_closure_REGISTER_alt))

.balign 16
.globl  C(ffi_closure_STDCALL_alt)
FFI_HIDDEN(C(ffi_closure_STDCALL_alt))

C(ffi_closure_STDCALL_alt):

/* See the comments above trampoline_code_table. */
_CET_ENDBR
movl    4(%esp), %eax                   /* Load closure in eax */
add     $8, %esp                        /* Restore the stack */
jmp     C(ffi_closure_STDCALL)

ENDF(C(ffi_closure_STDCALL_alt))

/*

* Below is the definition of the trampoline code table. Each element in
* the code table is a trampoline.
*
* Because we jump to the trampoline, we place a _CET_ENDBR at the
* beginning of the trampoline to mark it as a valid branch target. This is
* part of the the Intel CET (Control Flow Enforcement Technology).
*/

/*

* The trampoline uses register eax.  It saves the original value of eax on
* the stack.
*
* The trampoline has two parameters - target code to jump to and data for
* the target code. The trampoline extracts the parameters from its parameter
* block (see tramp_table_map()). The trampoline saves the data address on
* the stack. Finally, it jumps to the target code.
*
* The target code can choose to:
*
* - restore the value of eax
* - load the data address in a register
* - restore the stack pointer to what it was when the trampoline was invoked.
*/

ifdef ENDBR_PRESENT define X86_DATA_OFFSET 4081 define X86_CODE_OFFSET 4070 else define X86_DATA_OFFSET 4085 define X86_CODE_OFFSET 4074 endif

.align  X86_TRAMP_MAP_SIZE
.globl  C(trampoline_code_table)
FFI_HIDDEN(C(trampoline_code_table))

C(trampoline_code_table):

.rept   X86_TRAMP_MAP_SIZE / X86_TRAMP_SIZE
_CET_ENDBR
sub     $8, %esp
movl    %eax, (%esp)                    /* Save %eax on stack */
call    1f                              /* Get next PC into %eax */
movl    X86_DATA_OFFSET(%eax), %eax     /* Copy data into %eax */
movl    %eax, 4(%esp)                   /* Save data on stack */
call    1f                              /* Get next PC into %eax */
movl    X86_CODE_OFFSET(%eax), %eax     /* Copy code into %eax */
jmp     *%eax                           /* Jump to code */

1:

mov     (%esp), %eax
ret
.align  4
.endr

ENDF(C(trampoline_code_table))

.align  X86_TRAMP_MAP_SIZE

endif /* FFI_EXEC_STATIC_TRAMP */

if !FFI_NO_RAW_API

define raw_closure_S_FS (16+16+12)

.balign 16
.globl  C(ffi_closure_raw_SYSV)
FFI_HIDDEN(C(ffi_closure_raw_SYSV))

C(ffi_closure_raw_SYSV): L(UW32):

# cfi_startproc
_CET_ENDBR
subl    $raw_closure_S_FS, %esp

L(UW33):

# cfi_def_cfa_offset(raw_closure_S_FS + 4)
movl    %ebx, raw_closure_S_FS-4(%esp)

L(UW34):

# cfi_rel_offset(%ebx, raw_closure_S_FS-4)

movl    FFI_TRAMPOLINE_SIZE+8(%eax), %edx       /* load cl->user_data */
movl    %edx, 12(%esp)
leal    raw_closure_S_FS+4(%esp), %edx          /* load raw_args */
movl    %edx, 8(%esp)
leal    16(%esp), %edx                          /* load &res */
movl    %edx, 4(%esp)
movl    FFI_TRAMPOLINE_SIZE(%eax), %ebx         /* load cl->cif */
movl    %ebx, (%esp)
call    *FFI_TRAMPOLINE_SIZE+4(%eax)            /* call cl->fun */

movl    20(%ebx), %eax                          /* load cif->flags */
andl    $X86_RET_TYPE_MASK, %eax

ifdef __PIC__

call    C(__x86.get_pc_thunk.bx)

L(pc4):

leal    L(load_table4)-L(pc4)(%ebx, %eax, 8), %ecx

else

leal    L(load_table4)(,%eax, 8), %ecx

endif

movl    raw_closure_S_FS-4(%esp), %ebx

L(UW35):

# cfi_restore(%ebx)
movl    16(%esp), %eax                          /* Optimistic load */
jmp     *%ecx

.balign 8

L(load_table4): E(L(load_table4), X86_RET_FLOAT)

flds    16(%esp)
jmp     L(e4)

E(L(load_table4), X86_RET_DOUBLE)

fldl    16(%esp)
jmp     L(e4)

E(L(load_table4), X86_RET_LDOUBLE)

fldt    16(%esp)
jmp     L(e4)

E(L(load_table4), X86_RET_SINT8)

movsbl  %al, %eax
jmp     L(e4)

E(L(load_table4), X86_RET_SINT16)

movswl  %ax, %eax
jmp     L(e4)

E(L(load_table4), X86_RET_UINT8)

movzbl  %al, %eax
jmp     L(e4)

E(L(load_table4), X86_RET_UINT16)

movzwl  %ax, %eax
jmp     L(e4)

E(L(load_table4), X86_RET_INT64)

movl    16+4(%esp), %edx
jmp     L(e4)

E(L(load_table4), X86_RET_INT32)

nop
/* fallthru */

E(L(load_table4), X86_RET_VOID) L(e4):

addl    $raw_closure_S_FS, %esp

L(UW36):

# cfi_adjust_cfa_offset(-raw_closure_S_FS)
ret

L(UW37):

# cfi_adjust_cfa_offset(raw_closure_S_FS)

E(L(load_table4), X86_RET_STRUCTPOP)

addl    $raw_closure_S_FS, %esp

L(UW38):

# cfi_adjust_cfa_offset(-raw_closure_S_FS)
ret     $4

L(UW39):

# cfi_adjust_cfa_offset(raw_closure_S_FS)

E(L(load_table4), X86_RET_STRUCTARG)

jmp     L(e4)

E(L(load_table4), X86_RET_STRUCT_1B)

movzbl  %al, %eax
jmp     L(e4)

E(L(load_table4), X86_RET_STRUCT_2B)

movzwl  %ax, %eax
jmp     L(e4)

/* Fill out the table so that bad values are predictable.  */

E(L(load_table4), X86_RET_UNUSED14)

ud2

E(L(load_table4), X86_RET_UNUSED15)

ud2

L(UW40):

# cfi_endproc

ENDF(C(ffi_closure_raw_SYSV))

define raw_closure_T_FS (16+16+8)

.balign 16
.globl  C(ffi_closure_raw_THISCALL)
FFI_HIDDEN(C(ffi_closure_raw_THISCALL))

C(ffi_closure_raw_THISCALL): L(UW41):

# cfi_startproc
_CET_ENDBR
/* Rearrange the stack such that %ecx is the first argument.
   This means moving the return address.  */
popl    %edx

L(UW42):

# cfi_def_cfa_offset(0)
# cfi_register(%eip, %edx)
pushl   %ecx

L(UW43):

# cfi_adjust_cfa_offset(4)
pushl   %edx

L(UW44):

# cfi_adjust_cfa_offset(4)
# cfi_rel_offset(%eip, 0)
subl    $raw_closure_T_FS, %esp

L(UW45):

# cfi_adjust_cfa_offset(raw_closure_T_FS)
movl    %ebx, raw_closure_T_FS-4(%esp)

L(UW46):

# cfi_rel_offset(%ebx, raw_closure_T_FS-4)

movl    FFI_TRAMPOLINE_SIZE+8(%eax), %edx       /* load cl->user_data */
movl    %edx, 12(%esp)
leal    raw_closure_T_FS+4(%esp), %edx          /* load raw_args */
movl    %edx, 8(%esp)
leal    16(%esp), %edx                          /* load &res */
movl    %edx, 4(%esp)
movl    FFI_TRAMPOLINE_SIZE(%eax), %ebx         /* load cl->cif */
movl    %ebx, (%esp)
call    *FFI_TRAMPOLINE_SIZE+4(%eax)            /* call cl->fun */

movl    20(%ebx), %eax                          /* load cif->flags */
andl    $X86_RET_TYPE_MASK, %eax

ifdef __PIC__

call    C(__x86.get_pc_thunk.bx)

L(pc5):

leal    L(load_table5)-L(pc5)(%ebx, %eax, 8), %ecx

else

leal    L(load_table5)(,%eax, 8), %ecx

endif

movl    raw_closure_T_FS-4(%esp), %ebx

L(UW47):

# cfi_restore(%ebx)
movl    16(%esp), %eax                          /* Optimistic load */
jmp     *%ecx

.balign 8

L(load_table5): E(L(load_table5), X86_RET_FLOAT)

flds    16(%esp)
jmp     L(e5)

E(L(load_table5), X86_RET_DOUBLE)

fldl    16(%esp)
jmp     L(e5)

E(L(load_table5), X86_RET_LDOUBLE)

fldt    16(%esp)
jmp     L(e5)

E(L(load_table5), X86_RET_SINT8)

movsbl  %al, %eax
jmp     L(e5)

E(L(load_table5), X86_RET_SINT16)

movswl  %ax, %eax
jmp     L(e5)

E(L(load_table5), X86_RET_UINT8)

movzbl  %al, %eax
jmp     L(e5)

E(L(load_table5), X86_RET_UINT16)

movzwl  %ax, %eax
jmp     L(e5)

E(L(load_table5), X86_RET_INT64)

movl    16+4(%esp), %edx
jmp     L(e5)

E(L(load_table5), X86_RET_INT32)

nop
/* fallthru */

E(L(load_table5), X86_RET_VOID) L(e5):

addl    $raw_closure_T_FS, %esp

L(UW48):

# cfi_adjust_cfa_offset(-raw_closure_T_FS)
/* Remove the extra %ecx argument we pushed.  */
ret     $4

L(UW49):

# cfi_adjust_cfa_offset(raw_closure_T_FS)

E(L(load_table5), X86_RET_STRUCTPOP)

addl    $raw_closure_T_FS, %esp

L(UW50):

# cfi_adjust_cfa_offset(-raw_closure_T_FS)
ret     $8

L(UW51):

# cfi_adjust_cfa_offset(raw_closure_T_FS)

E(L(load_table5), X86_RET_STRUCTARG)

jmp     L(e5)

E(L(load_table5), X86_RET_STRUCT_1B)

movzbl  %al, %eax
jmp     L(e5)

E(L(load_table5), X86_RET_STRUCT_2B)

movzwl  %ax, %eax
jmp     L(e5)

/* Fill out the table so that bad values are predictable.  */

E(L(load_table5), X86_RET_UNUSED14)

ud2

E(L(load_table5), X86_RET_UNUSED15)

ud2

L(UW52):

# cfi_endproc

ENDF(C(ffi_closure_raw_THISCALL))

endif /* !FFI_NO_RAW_API */

ifdef X86_DARWIN /* The linker in use on earlier Darwin needs weak definitions to be

placed in a coalesced section.  That section should not be called
__TEXT,__text since that would be re-defining the attributes of the
.text section (which is an error for earlier tools). Here we use
'__textcoal_nt' which is what GCC emits for this.
Later linker versions are happy to use a normal section and, after
Darwin12 / OSX 10.8, the tools warn that using coalesced sections
for this is deprecated so we must switch to avoid build fails and/or
deprecation warnings.  */

# if defined(ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED) && \

__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1080

# define COMDAT(X) \

.section __TEXT,__textcoal_nt,coalesced,pure_instructions;      \
.weak_definition X;                                             \
FFI_HIDDEN(X)

# else # define COMDAT(X) \

.text;                                                          \
.weak_definition X;                                             \
FFI_HIDDEN(X)

# endif elif defined __ELF__ && !(defined(__sun__) && defined(svr4)) # define COMDAT(X) \

.section .text.X,"axG",@progbits,X,comdat;                      \
.globl  X;                                                      \
FFI_HIDDEN(X)

else # define COMDAT(X) endif

if defined(__PIC__)

COMDAT(C(__x86.get_pc_thunk.bx))

C(__x86.get_pc_thunk.bx):

movl    (%esp), %ebx
ret

ENDF(C(__x86.get_pc_thunk.bx)) # if defined X86_DARWIN || defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE

COMDAT(C(__x86.get_pc_thunk.dx))

C(__x86.get_pc_thunk.dx):

movl    (%esp), %edx
ret

ENDF(C(__x86.get_pc_thunk.dx)) endif /* DARWIN || HIDDEN */ endif /* __PIC__ */

/* Sadly, OSX cctools-as does not understand .cfi directives at all so

we build an eh frame by hand.  */

ifdef __APPLE__ /* The cctools assembler will try to make a difference between two local

symbols into a relocation against, which will not work in the eh (produces
link-time fails).
To avoid this, we compute the symbol difference with a .set directive and
then substitute this value.  */

# define LEN(N, P) .set Llen$N$P,L(N)-L(P); .long Llen$N$P /* Note, this assume DW_CFA_advance_loc1 fits into 7 bits. */ # define ADV(N, P) .set Ladv$N$P,L(N)-L(P); .byte 2, Ladv$N$P /* For historical reasons, the EH reg numbers for SP and FP are swapped from

the DWARF ones for 32b Darwin.  */

# define SP 5 # define FP 4 # define ENC 0x10 else # define LEN(N, P) .long L(N)-L(P) /* Assume DW_CFA_advance_loc1 fits. */ # define ADV(N, P) .byte 2, L(N)-L(P) # define SP 4 # define FP 5 # define ENC 0x1b endif

ifdef HAVE_AS_X86_PCREL # define PCREL(X) X-. else # define PCREL(X) X endif

ifdef __APPLE__ .section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support EHFrame0: elif defined(X86_WIN32) .section .eh_frame,“r” elif defined(HAVE_AS_X86_64_UNWIND_SECTION_TYPE) .section .eh_frame,EH_FRAME_FLAGS,@unwind else .section .eh_frame,EH_FRAME_FLAGS,@progbits endif ifndef __APPLE__ /* EH sections are already suitably aligned on Darwin. */

.balign 4

endif

L(CIE):

.set    L(set0),L(ECIE)-L(SCIE)
.long   L(set0)                 /* CIE Length */

L(SCIE):

.long   0                       /* CIE Identifier Tag */
.byte   1                       /* CIE Version */
.ascii  "zR\0"                  /* CIE Augmentation */
.byte   1                       /* CIE Code Alignment Factor */
.byte   0x7c                    /* CIE Data Alignment Factor */
.byte   0x8                     /* CIE RA Column */
.byte   1                       /* Augmentation size */
.byte   ENC                     /* FDE Encoding (pcrel abs/4byte) */
.byte   0xc, SP, 4              /* DW_CFA_def_cfa, %esp offset 4 */
.byte   0x80+8, 1               /* DW_CFA_offset, %eip offset 1*-4 */
.balign 4

L(ECIE):

.set    L(set1),L(EFDE1)-L(SFDE1)
.long   L(set1)                 /* FDE Length */

L(SFDE1):

LEN(SFDE1, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW0))           /* Initial location */
LEN(UW5, UW0)                   /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW1, UW0)
.byte   0xc, FP, 8              /* DW_CFA_def_cfa, %ebp 8 */
.byte   0x80+FP, 2              /* DW_CFA_offset, %ebp 2*-4 */
ADV(UW2, UW1)
.byte   0x80+3, 0               /* DW_CFA_offset, %ebx 0*-4 */
ADV(UW3, UW2)
.byte   0xa                     /* DW_CFA_remember_state */
.byte   0xc, SP, 4              /* DW_CFA_def_cfa, %esp 4 */
.byte   0xc0+3                  /* DW_CFA_restore, %ebx */
.byte   0xc0+FP                 /* DW_CFA_restore, %ebp */
ADV(UW4, UW3)
.byte   0xb                     /* DW_CFA_restore_state */
.balign 4

L(EFDE1):

.set    L(set2),L(EFDE2)-L(SFDE2)
.long   L(set2)                 /* FDE Length */

L(SFDE2):

LEN(SFDE2, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW6))           /* Initial location */
LEN(UW8,UW6)                    /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW7, UW6)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */
.balign 4

L(EFDE2):

.set    L(set3),L(EFDE3)-L(SFDE3)
.long   L(set3)                 /* FDE Length */

L(SFDE3):

LEN(SFDE3, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW9))           /* Initial location */
LEN(UW11, UW9)                  /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW10, UW9)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */
.balign 4

L(EFDE3):

.set    L(set4),L(EFDE4)-L(SFDE4)
.long   L(set4)                 /* FDE Length */

L(SFDE4):

LEN(SFDE4, CIE)         /* FDE CIE offset */
.long   PCREL(L(UW12))          /* Initial location */
LEN(UW20, UW12)                 /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW13, UW12)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */

ifdef FFI_CLOSURE_CALL_INNER_SAVE_EBX

ADV(UW14, UW13)
.byte   0x80+3, (40-(closure_FS+4))/-4  /* DW_CFA_offset %ebx */
ADV(UW15, UW14)
.byte   0xc0+3                  /* DW_CFA_restore %ebx */
ADV(UW16, UW15)

else

ADV(UW16, UW13)

endif

.byte   0xe, 4                  /* DW_CFA_def_cfa_offset */
ADV(UW17, UW16)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */
ADV(UW18, UW17)
.byte   0xe, 4                  /* DW_CFA_def_cfa_offset */
ADV(UW19, UW18)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */
.balign 4

L(EFDE4):

.set    L(set5),L(EFDE5)-L(SFDE5)
.long   L(set5)                 /* FDE Length */

L(SFDE5):

LEN(SFDE5, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW21))          /* Initial location */
LEN(UW23, UW21)                 /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW22, UW21)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */
.balign 4

L(EFDE5):

.set    L(set6),L(EFDE6)-L(SFDE6)
.long   L(set6)                 /* FDE Length */

L(SFDE6):

LEN(SFDE6, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW24))          /* Initial location */
LEN(UW26, UW24)                 /* Address range */
.byte   0                       /* Augmentation size */
.byte   0xe, 8                  /* DW_CFA_def_cfa_offset */
.byte   0x80+8, 2               /* DW_CFA_offset %eip, 2*-4 */
ADV(UW25, UW24)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */
.balign 4

L(EFDE6):

.set    L(set7),L(EFDE7)-L(SFDE7)
.long   L(set7)                 /* FDE Length */

L(SFDE7):

LEN(SFDE7, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW27))          /* Initial location */
LEN(UW31, UW27)                 /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW28, UW27)
.byte   0xe, closure_FS+4       /* DW_CFA_def_cfa_offset */

ifdef FFI_CLOSURE_CALL_INNER_SAVE_EBX

ADV(UW29, UW28)
.byte   0x80+3, (40-(closure_FS+4))/-4  /* DW_CFA_offset %ebx */
ADV(UW30, UW29)
.byte   0xc0+3                  /* DW_CFA_restore %ebx */

endif

.balign 4

L(EFDE7): if !FFI_NO_RAW_API

.set    L(set8),L(EFDE8)-L(SFDE8)
.long   L(set8)                 /* FDE Length */

L(SFDE8):

LEN(SFDE8, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW32))          /* Initial location */
LEN(UW40, UW32)                 /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW33, UW32)
.byte   0xe, raw_closure_S_FS+4 /* DW_CFA_def_cfa_offset */
ADV(UW34, UW33)
.byte   0x80+3, 2               /* DW_CFA_offset %ebx 2*-4 */
ADV(UW35, UW34)
.byte   0xc0+3                  /* DW_CFA_restore %ebx */
ADV(UW36, UW35)
.byte   0xe, 4                  /* DW_CFA_def_cfa_offset */
ADV(UW37, UW36)
.byte   0xe, raw_closure_S_FS+4 /* DW_CFA_def_cfa_offset */
ADV(UW38, UW37)
.byte   0xe, 4                  /* DW_CFA_def_cfa_offset */
ADV(UW39, UW38)
.byte   0xe, raw_closure_S_FS+4 /* DW_CFA_def_cfa_offset */
.balign 4

L(EFDE8):

.set    L(set9),L(EFDE9)-L(SFDE9)
.long   L(set9)                 /* FDE Length */

L(SFDE9):

LEN(SFDE9, CIE)                 /* FDE CIE offset */
.long   PCREL(L(UW41))          /* Initial location */
LEN(UW52, UW41)                 /* Address range */
.byte   0                       /* Augmentation size */
ADV(UW42, UW41)
.byte   0xe, 0                  /* DW_CFA_def_cfa_offset */
.byte   0x9, 8, 2               /* DW_CFA_register %eip, %edx */
ADV(UW43, UW42)
.byte   0xe, 4                  /* DW_CFA_def_cfa_offset */
ADV(UW44, UW43)
.byte   0xe, 8                  /* DW_CFA_def_cfa_offset */
.byte   0x80+8, 2               /* DW_CFA_offset %eip 2*-4 */
ADV(UW45, UW44)
.byte   0xe, raw_closure_T_FS+8 /* DW_CFA_def_cfa_offset */
ADV(UW46, UW45)
.byte   0x80+3, 3               /* DW_CFA_offset %ebx 3*-4 */
ADV(UW47, UW46)
.byte   0xc0+3                  /* DW_CFA_restore %ebx */
ADV(UW48, UW47)
.byte   0xe, 8                  /* DW_CFA_def_cfa_offset */
ADV(UW49, UW48)
.byte   0xe, raw_closure_T_FS+8 /* DW_CFA_def_cfa_offset */
ADV(UW50, UW49)
.byte   0xe, 8                  /* DW_CFA_def_cfa_offset */
ADV(UW51, UW50)
.byte   0xe, raw_closure_T_FS+8 /* DW_CFA_def_cfa_offset */
.balign 4

L(EFDE9): endif /* !FFI_NO_RAW_API */

ifdef _WIN32

.def     @feat.00;
.scl    3;
.type   0;
.endef
.globl  @feat.00

@feat.00 = 1 endif

if defined(__APPLE__)

.subsections_via_symbols

# if defined(ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED) && \

__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1070 && __clang__

/* compact unwind is not used with GCC at present, was not present before 10.6

but has some bugs there, so do not emit until 10.7.  */
 .section __LD,__compact_unwind,regular,debug

 /* compact unwind for ffi_call_i386 */
 .long    C(ffi_call_i386)
 .set     L1,L(UW5)-L(UW0)
 .long    L1
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_go_closure_EAX */
 .long    C(ffi_go_closure_EAX)
 .set     L2,L(UW8)-L(UW6)
 .long    L2
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_go_closure_ECX */
 .long    C(ffi_go_closure_ECX)
 .set     L3,L(UW11)-L(UW9)
 .long    L3
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_closure_i386 */
 .long    C(ffi_closure_i386)
 .set     L4,L(UW20)-L(UW12)
 .long    L4
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_go_closure_STDCALL */
 .long    C(ffi_go_closure_STDCALL)
 .set     L5,L(UW23)-L(UW21)
 .long    L5
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_closure_REGISTER */
 .long    C(ffi_closure_REGISTER)
 .set     L6,L(UW26)-L(UW24)
 .long    L6
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_closure_STDCALL */
 .long    C(ffi_closure_STDCALL)
 .set     L7,L(UW31)-L(UW27)
 .long    L7
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_closure_raw_SYSV */
 .long    C(ffi_closure_raw_SYSV)
 .set     L8,L(UW40)-L(UW32)
 .long    L8
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

 /* compact unwind for ffi_closure_raw_THISCALL */
 .long    C(ffi_closure_raw_THISCALL)
 .set     L9,L(UW52)-L(UW41)
 .long    L9
 .long    0x04000000 /* use dwarf unwind info */
 .long    0
 .long    0

endif /* use compact unwind */ endif /* __APPLE__ */

endif /* ifndef _MSC_VER */

endif /* ifdef i386 */

if defined __ELF__ && defined __linux__

.section        .note.GNU-stack,"",@progbits

endif