ag/cpython-source-deps
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
f1560b7bbeb57042a32dfde487c3d21bd9ef6a51
cpython-source-deps/src/x86/unix64.S
Rainer Orth f1560b7bbe x86: Solaris fixes 
* Solaris/x86 /bin/as doesn't support .org, so I've just disabled the
  uses in src/x86/{sysv, unix64}.S, as on Darwin.
* Solaris/x86 needs to use EH_FRAME_FLAGS so manually and compiler
  generated .eh_frame sections match, otherwise libffi.so fails to link:
* Solaris/x86 /bin/as has different COMDAT syntax; I've disabled it for
  the moment.
2015-01-16 11:32:11 -08:00

547 lines
15 KiB
ArmAsm
Raw Blame History

/* -----------------------------------------------------------------------
unix64.S - Copyright (c) 2013 The Written Word, Inc.
- Copyright (c) 2008 Red Hat, Inc
- Copyright (c) 2002 Bo Thorsen <bo@suse.de>
x86-64 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 __x86_64__
#define LIBFFI_ASM
#include <fficonfig.h>
#include <ffi.h>
#include "internal64.h"
.text
#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 __APPLE__
# define L(X) C1(L, X)
#else
# define L(X) C1(.L, X)
#endif
#ifdef __ELF__
# define PLT(X) X@PLT
# define ENDF(X) .type X,@function; .size X, . - X
#else
# define PLT(X) X
# define ENDF(X)
#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
/* ffi_call_unix64 (void *args, unsigned long bytes, unsigned flags,
void *raddr, void (*fnaddr)(void));
Bit o trickiness here -- ARGS+BYTES is the base of the stack frame
for this function. This has been allocated by ffi_call. We also
deallocate some of the stack that has been alloca'd. */
.balign 8
.globl C(ffi_call_unix64)
FFI_HIDDEN(C(ffi_call_unix64))
C(ffi_call_unix64):
L(UW0):
movq (%rsp), %r10 /* Load return address. */
leaq (%rdi, %rsi), %rax /* Find local stack base. */
movq %rdx, (%rax) /* Save flags. */
movq %rcx, 8(%rax) /* Save raddr. */
movq %rbp, 16(%rax) /* Save old frame pointer. */
movq %r10, 24(%rax) /* Relocate return address. */
movq %rax, %rbp /* Finalize local stack frame. */
/* New stack frame based off rbp. 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-8, so from the
perspective of the unwind info, it hasn't moved. */
L(UW1):
/* cfi_def_cfa(%rbp, 32) */
/* cfi_rel_offset(%rbp, 16) */
movq %rdi, %r10 /* Save a copy of the register area. */
movq %r8, %r11 /* Save a copy of the target fn. */
movl %r9d, %eax /* Set number of SSE registers. */
/* Load up all argument registers. */
movq (%r10), %rdi
movq 0x08(%r10), %rsi
movq 0x10(%r10), %rdx
movq 0x18(%r10), %rcx
movq 0x20(%r10), %r8
movq 0x28(%r10), %r9
movl 0xb0(%r10), %eax
testl %eax, %eax
jnz L(load_sse)
L(ret_from_load_sse):
/* Deallocate the reg arg area, except for r10, then load via pop. */
leaq 0xb8(%r10), %rsp
popq %r10
/* Call the user function. */
call *%r11
/* Deallocate stack arg area; local stack frame in redzone. */
leaq 24(%rbp), %rsp
movq 0(%rbp), %rcx /* Reload flags. */
movq 8(%rbp), %rdi /* Reload raddr. */
movq 16(%rbp), %rbp /* Reload old frame pointer. */
L(UW2):
/* cfi_remember_state */
/* cfi_def_cfa(%rsp, 8) */
/* cfi_restore(%rbp) */
/* The first byte of the flags contains the FFI_TYPE. */
cmpb $UNIX64_RET_LAST, %cl
movzbl %cl, %r10d
leaq L(store_table)(%rip), %r11
ja L(sa)
leaq (%r11, %r10, 8), %r10
/* Prep for the structure cases: scratch area in redzone. */
leaq -20(%rsp), %rsi
jmp *%r10
.balign 8
L(store_table):
E(L(store_table), UNIX64_RET_VOID)
ret
E(L(store_table), UNIX64_RET_UINT8)
movzbl %al, %eax
movq %rax, (%rdi)
ret
E(L(store_table), UNIX64_RET_UINT16)
movzwl %ax, %eax
movq %rax, (%rdi)
ret
E(L(store_table), UNIX64_RET_UINT32)
movl %eax, %eax
movq %rax, (%rdi)
ret
E(L(store_table), UNIX64_RET_SINT8)
movsbq %al, %rax
movq %rax, (%rdi)
ret
E(L(store_table), UNIX64_RET_SINT16)
movswq %ax, %rax
movq %rax, (%rdi)
ret
E(L(store_table), UNIX64_RET_SINT32)
cltq
movq %rax, (%rdi)
ret
E(L(store_table), UNIX64_RET_INT64)
movq %rax, (%rdi)
ret
E(L(store_table), UNIX64_RET_XMM32)
movd %xmm0, (%rdi)
ret
E(L(store_table), UNIX64_RET_XMM64)
movq %xmm0, (%rdi)
ret
E(L(store_table), UNIX64_RET_X87)
fstpt (%rdi)
ret
E(L(store_table), UNIX64_RET_X87_2)
fstpt (%rdi)
fstpt 16(%rdi)
ret
E(L(store_table), UNIX64_RET_ST_XMM0_RAX)
movq %rax, 8(%rsi)
jmp L(s3)
E(L(store_table), UNIX64_RET_ST_RAX_XMM0)
movq %xmm0, 8(%rsi)
jmp L(s2)
E(L(store_table), UNIX64_RET_ST_XMM0_XMM1)
movq %xmm1, 8(%rsi)
jmp L(s3)
E(L(store_table), UNIX64_RET_ST_RAX_RDX)
movq %rdx, 8(%rsi)
L(s2):
movq %rax, (%rsi)
shrl $UNIX64_SIZE_SHIFT, %ecx
rep movsb
ret
.balign 8
L(s3):
movq %xmm0, (%rsi)
shrl $UNIX64_SIZE_SHIFT, %ecx
rep movsb
ret
L(sa): call PLT(C(abort))
/* Many times we can avoid loading any SSE registers at all.
It's not worth an indirect jump to load the exact set of
SSE registers needed; zero or all is a good compromise. */
.balign 2
L(UW3):
/* cfi_restore_state */
L(load_sse):
movdqa 0x30(%r10), %xmm0
movdqa 0x40(%r10), %xmm1
movdqa 0x50(%r10), %xmm2
movdqa 0x60(%r10), %xmm3
movdqa 0x70(%r10), %xmm4
movdqa 0x80(%r10), %xmm5
movdqa 0x90(%r10), %xmm6
movdqa 0xa0(%r10), %xmm7
jmp L(ret_from_load_sse)
L(UW4):
ENDF(C(ffi_call_unix64))
/* 6 general registers, 8 vector registers,
32 bytes of rvalue, 8 bytes of alignment. */
#define ffi_closure_OFS_G 0
#define ffi_closure_OFS_V (6*8)
#define ffi_closure_OFS_RVALUE (ffi_closure_OFS_V + 8*16)
#define ffi_closure_FS (ffi_closure_OFS_RVALUE + 32 + 8)
/* The location of rvalue within the red zone after deallocating the frame. */
#define ffi_closure_RED_RVALUE (ffi_closure_OFS_RVALUE - ffi_closure_FS)
.balign 2
.globl C(ffi_closure_unix64_sse)
FFI_HIDDEN(C(ffi_closure_unix64_sse))
C(ffi_closure_unix64_sse):
L(UW5):
subq $ffi_closure_FS, %rsp
L(UW6):
/* cfi_adjust_cfa_offset(ffi_closure_FS) */
movdqa %xmm0, ffi_closure_OFS_V+0x00(%rsp)
movdqa %xmm1, ffi_closure_OFS_V+0x10(%rsp)
movdqa %xmm2, ffi_closure_OFS_V+0x20(%rsp)
movdqa %xmm3, ffi_closure_OFS_V+0x30(%rsp)
movdqa %xmm4, ffi_closure_OFS_V+0x40(%rsp)
movdqa %xmm5, ffi_closure_OFS_V+0x50(%rsp)
movdqa %xmm6, ffi_closure_OFS_V+0x60(%rsp)
movdqa %xmm7, ffi_closure_OFS_V+0x70(%rsp)
jmp L(sse_entry1)
L(UW7):
ENDF(C(ffi_closure_unix64_sse))
.balign 2
.globl C(ffi_closure_unix64)
FFI_HIDDEN(C(ffi_closure_unix64))
C(ffi_closure_unix64):
L(UW8):
subq $ffi_closure_FS, %rsp
L(UW9):
/* cfi_adjust_cfa_offset(ffi_closure_FS) */
L(sse_entry1):
movq %rdi, ffi_closure_OFS_G+0x00(%rsp)
movq %rsi, ffi_closure_OFS_G+0x08(%rsp)
movq %rdx, ffi_closure_OFS_G+0x10(%rsp)
movq %rcx, ffi_closure_OFS_G+0x18(%rsp)
movq %r8, ffi_closure_OFS_G+0x20(%rsp)
movq %r9, ffi_closure_OFS_G+0x28(%rsp)
#ifdef __ILP32__
movl FFI_TRAMPOLINE_SIZE(%r10), %edi /* Load cif */
movl FFI_TRAMPOLINE_SIZE+4(%r10), %esi /* Load fun */
movl FFI_TRAMPOLINE_SIZE+8(%r10), %edx /* Load user_data */
#else
movq FFI_TRAMPOLINE_SIZE(%r10), %rdi /* Load cif */
movq FFI_TRAMPOLINE_SIZE+8(%r10), %rsi /* Load fun */
movq FFI_TRAMPOLINE_SIZE+16(%r10), %rdx /* Load user_data */
#endif
L(do_closure):
leaq ffi_closure_OFS_RVALUE(%rsp), %rcx /* Load rvalue */
movq %rsp, %r8 /* Load reg_args */
leaq ffi_closure_FS+8(%rsp), %r9 /* Load argp */
call C(ffi_closure_unix64_inner)
/* Deallocate stack frame early; return value is now in redzone. */
addq $ffi_closure_FS, %rsp
L(UW10):
/* cfi_adjust_cfa_offset(-ffi_closure_FS) */
/* The first byte of the return value contains the FFI_TYPE. */
cmpb $UNIX64_RET_LAST, %al
movzbl %al, %r10d
leaq L(load_table)(%rip), %r11
ja L(la)
leaq (%r11, %r10, 8), %r10
leaq ffi_closure_RED_RVALUE(%rsp), %rsi
jmp *%r10
.balign 8
L(load_table):
E(L(load_table), UNIX64_RET_VOID)
ret
E(L(load_table), UNIX64_RET_UINT8)
movzbl (%rsi), %eax
ret
E(L(load_table), UNIX64_RET_UINT16)
movzwl (%rsi), %eax
ret
E(L(load_table), UNIX64_RET_UINT32)
movl (%rsi), %eax
ret
E(L(load_table), UNIX64_RET_SINT8)
movsbl (%rsi), %eax
ret
E(L(load_table), UNIX64_RET_SINT16)
movswl (%rsi), %eax
ret
E(L(load_table), UNIX64_RET_SINT32)
movl (%rsi), %eax
ret
E(L(load_table), UNIX64_RET_INT64)
movq (%rsi), %rax
ret
E(L(load_table), UNIX64_RET_XMM32)
movd (%rsi), %xmm0
ret
E(L(load_table), UNIX64_RET_XMM64)
movq (%rsi), %xmm0
ret
E(L(load_table), UNIX64_RET_X87)
fldt (%rsi)
ret
E(L(load_table), UNIX64_RET_X87_2)
fldt 16(%rsi)
fldt (%rsi)
ret
E(L(load_table), UNIX64_RET_ST_XMM0_RAX)
movq 8(%rsi), %rax
jmp L(l3)
E(L(load_table), UNIX64_RET_ST_RAX_XMM0)
movq 8(%rsi), %xmm0
jmp L(l2)
E(L(load_table), UNIX64_RET_ST_XMM0_XMM1)
movq 8(%rsi), %xmm1
jmp L(l3)
E(L(load_table), UNIX64_RET_ST_RAX_RDX)
movq 8(%rsi), %rdx
L(l2):
movq (%rsi), %rax
ret
.balign 8
L(l3):
movq (%rsi), %xmm0
ret
L(la): call PLT(C(abort))
L(UW11):
ENDF(C(ffi_closure_unix64))
.balign 2
.globl C(ffi_go_closure_unix64_sse)
FFI_HIDDEN(C(ffi_go_closure_unix64_sse))
C(ffi_go_closure_unix64_sse):
L(UW12):
subq $ffi_closure_FS, %rsp
L(UW13):
/* cfi_adjust_cfa_offset(ffi_closure_FS) */
movdqa %xmm0, ffi_closure_OFS_V+0x00(%rsp)
movdqa %xmm1, ffi_closure_OFS_V+0x10(%rsp)
movdqa %xmm2, ffi_closure_OFS_V+0x20(%rsp)
movdqa %xmm3, ffi_closure_OFS_V+0x30(%rsp)
movdqa %xmm4, ffi_closure_OFS_V+0x40(%rsp)
movdqa %xmm5, ffi_closure_OFS_V+0x50(%rsp)
movdqa %xmm6, ffi_closure_OFS_V+0x60(%rsp)
movdqa %xmm7, ffi_closure_OFS_V+0x70(%rsp)
jmp L(sse_entry2)
L(UW14):
ENDF(C(ffi_go_closure_unix64_sse))
.balign 2
.globl C(ffi_go_closure_unix64)
FFI_HIDDEN(C(ffi_go_closure_unix64))
C(ffi_go_closure_unix64):
L(UW15):
subq $ffi_closure_FS, %rsp
L(UW16):
/* cfi_adjust_cfa_offset(ffi_closure_FS) */
L(sse_entry2):
movq %rdi, ffi_closure_OFS_G+0x00(%rsp)
movq %rsi, ffi_closure_OFS_G+0x08(%rsp)
movq %rdx, ffi_closure_OFS_G+0x10(%rsp)
movq %rcx, ffi_closure_OFS_G+0x18(%rsp)
movq %r8, ffi_closure_OFS_G+0x20(%rsp)
movq %r9, ffi_closure_OFS_G+0x28(%rsp)
#ifdef __ILP32__
movl 4(%r10), %edi /* Load cif */
movl 8(%r10), %esi /* Load fun */
movl %r10d, %edx /* Load closure (user_data) */
#else
movq 8(%r10), %rdi /* Load cif */
movq 16(%r10), %rsi /* Load fun */
movq %r10, %rdx /* Load closure (user_data) */
#endif
jmp L(do_closure)
L(UW17):
ENDF(C(ffi_go_closure_unix64))
/* Sadly, OSX cctools-as doesn't understand .cfi directives at all. */
#ifdef __APPLE__
.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
EHFrame0:
#elif defined(HAVE_AS_X86_64_UNWIND_SECTION_TYPE)
.section .eh_frame,"a",@unwind
#else
.section .eh_frame,"a",@progbits
#endif
#ifdef HAVE_AS_X86_PCREL
# define PCREL(X) X - .
#else
# define PCREL(X) X@rel
#endif
/* Simplify advancing between labels. Assume DW_CFA_advance_loc1 fits. */
#define ADV(N, P) .byte 2, L(N)-L(P)
.balign 8
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 0x78 /* CIE Data Alignment Factor */
.byte 0x10 /* CIE RA Column */
.byte 1 /* Augmentation size */
.byte 0x1b /* FDE Encoding (pcrel sdata4) */
.byte 0xc, 7, 8 /* DW_CFA_def_cfa, %rsp offset 8 */
.byte 0x80+16, 1 /* DW_CFA_offset, %rip offset 1*-8 */
.balign 8
L(ECIE):
.set L(set1),L(EFDE1)-L(SFDE1)
.long L(set1) /* FDE Length */
L(SFDE1):
.long L(SFDE1)-L(CIE) /* FDE CIE offset */
.long PCREL(L(UW0)) /* Initial location */
.long L(UW4)-L(UW0) /* Address range */
.byte 0 /* Augmentation size */
ADV(UW1, UW0)
.byte 0xc, 6, 32 /* DW_CFA_def_cfa, %rbp 32 */
.byte 0x80+6, 2 /* DW_CFA_offset, %rbp 2*-8 */
ADV(UW2, UW1)
.byte 0xa /* DW_CFA_remember_state */
.byte 0xc, 7, 8 /* DW_CFA_def_cfa, %rsp 8 */
.byte 0xc0+6 /* DW_CFA_restore, %rbp */
ADV(UW3, UW2)
.byte 0xb /* DW_CFA_restore_state */
.balign 8
L(EFDE1):
.set L(set2),L(EFDE2)-L(SFDE2)
.long L(set2) /* FDE Length */
L(SFDE2):
.long L(SFDE2)-L(CIE) /* FDE CIE offset */
.long PCREL(L(UW5)) /* Initial location */
.long L(UW7)-L(UW5) /* Address range */
.byte 0 /* Augmentation size */
ADV(UW6, UW5)
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte ffi_closure_FS + 8, 1 /* uleb128, assuming 128 <= FS < 255 */
.balign 8
L(EFDE2):
.set L(set3),L(EFDE3)-L(SFDE3)
.long L(set3) /* FDE Length */
L(SFDE3):
.long L(SFDE3)-L(CIE) /* FDE CIE offset */
.long PCREL(L(UW8)) /* Initial location */
.long L(UW11)-L(UW8) /* Address range */
.byte 0 /* Augmentation size */
ADV(UW9, UW8)
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte ffi_closure_FS + 8, 1 /* uleb128, assuming 128 <= FS < 255 */
ADV(UW10, UW9)
.byte 0xe, 8 /* DW_CFA_def_cfa_offset 8 */
L(EFDE3):
.set L(set4),L(EFDE4)-L(SFDE4)
.long L(set4) /* FDE Length */
L(SFDE4):
.long L(SFDE4)-L(CIE) /* FDE CIE offset */
.long PCREL(L(UW12)) /* Initial location */
.long L(UW14)-L(UW12) /* Address range */
.byte 0 /* Augmentation size */
ADV(UW13, UW12)
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte ffi_closure_FS + 8, 1 /* uleb128, assuming 128 <= FS < 255 */
.balign 8
L(EFDE4):
.set L(set5),L(EFDE5)-L(SFDE5)
.long L(set5) /* FDE Length */
L(SFDE5):
.long L(SFDE5)-L(CIE) /* FDE CIE offset */
.long PCREL(L(UW15)) /* Initial location */
.long L(UW17)-L(UW15) /* Address range */
.byte 0 /* Augmentation size */
ADV(UW16, UW15)
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte ffi_closure_FS + 8, 1 /* uleb128, assuming 128 <= FS < 255 */
.balign 8
L(EFDE5):
#ifdef __APPLE__
.subsections_via_symbols
#endif
#endif /* __x86_64__ */
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif
Reference in New Issue View Git Blame Copy Permalink