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Diffstat (limited to 'gcc-4.4.3/libffi/src/x86/darwin64.S')
| -rw-r--r-- | gcc-4.4.3/libffi/src/x86/darwin64.S | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/gcc-4.4.3/libffi/src/x86/darwin64.S b/gcc-4.4.3/libffi/src/x86/darwin64.S new file mode 100644 index 000000000..5ba0a5f84 --- /dev/null +++ b/gcc-4.4.3/libffi/src/x86/darwin64.S @@ -0,0 +1,415 @@ +/* ----------------------------------------------------------------------- + darwin64.S - Copyright (c) 2006 Free Software Foundation, Inc. + derived from unix64.S + + x86-64 Foreign Function Interface for Darwin. + + 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 AUTHOR 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> + + .file "darwin64.S" +.text + +/* ffi_call_unix64 (void *args, unsigned long bytes, unsigned flags, + void *raddr, void (*fnaddr)()); + + 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. */ + + .align 3 + .globl _ffi_call_unix64 + +_ffi_call_unix64: +LUW0: + 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. */ +LUW1: + 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 8(%r10), %rsi + movq 16(%r10), %rdx + movq 24(%r10), %rcx + movq 32(%r10), %r8 + movq 40(%r10), %r9 + testl %eax, %eax + jnz Lload_sse +Lret_from_load_sse: + + /* Deallocate the reg arg area. */ + leaq 176(%r10), %rsp + + /* 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. */ +LUW2: + + /* The first byte of the flags contains the FFI_TYPE. */ + movzbl %cl, %r10d + leaq Lstore_table(%rip), %r11 + movslq (%r11, %r10, 4), %r10 + addq %r11, %r10 + jmp *%r10 + +Lstore_table: + .long Lst_void-Lstore_table /* FFI_TYPE_VOID */ + .long Lst_sint32-Lstore_table /* FFI_TYPE_INT */ + .long Lst_float-Lstore_table /* FFI_TYPE_FLOAT */ + .long Lst_double-Lstore_table /* FFI_TYPE_DOUBLE */ + .long Lst_ldouble-Lstore_table /* FFI_TYPE_LONGDOUBLE */ + .long Lst_uint8-Lstore_table /* FFI_TYPE_UINT8 */ + .long Lst_sint8-Lstore_table /* FFI_TYPE_SINT8 */ + .long Lst_uint16-Lstore_table /* FFI_TYPE_UINT16 */ + .long Lst_sint16-Lstore_table /* FFI_TYPE_SINT16 */ + .long Lst_uint32-Lstore_table /* FFI_TYPE_UINT32 */ + .long Lst_sint32-Lstore_table /* FFI_TYPE_SINT32 */ + .long Lst_int64-Lstore_table /* FFI_TYPE_UINT64 */ + .long Lst_int64-Lstore_table /* FFI_TYPE_SINT64 */ + .long Lst_struct-Lstore_table /* FFI_TYPE_STRUCT */ + .long Lst_int64-Lstore_table /* FFI_TYPE_POINTER */ + + .text + .align 3 +Lst_void: + ret + .align 3 +Lst_uint8: + movzbq %al, %rax + movq %rax, (%rdi) + ret + .align 3 +Lst_sint8: + movsbq %al, %rax + movq %rax, (%rdi) + ret + .align 3 +Lst_uint16: + movzwq %ax, %rax + movq %rax, (%rdi) + .align 3 +Lst_sint16: + movswq %ax, %rax + movq %rax, (%rdi) + ret + .align 3 +Lst_uint32: + movl %eax, %eax + movq %rax, (%rdi) + .align 3 +Lst_sint32: + cltq + movq %rax, (%rdi) + ret + .align 3 +Lst_int64: + movq %rax, (%rdi) + ret + .align 3 +Lst_float: + movss %xmm0, (%rdi) + ret + .align 3 +Lst_double: + movsd %xmm0, (%rdi) + ret +Lst_ldouble: + fstpt (%rdi) + ret + .align 3 +Lst_struct: + leaq -20(%rsp), %rsi /* Scratch area in redzone. */ + + /* We have to locate the values now, and since we don't want to + write too much data into the user's return value, we spill the + value to a 16 byte scratch area first. Bits 8, 9, and 10 + control where the values are located. Only one of the three + bits will be set; see ffi_prep_cif_machdep for the pattern. */ + movd %xmm0, %r10 + movd %xmm1, %r11 + testl $0x100, %ecx + cmovnz %rax, %rdx + cmovnz %r10, %rax + testl $0x200, %ecx + cmovnz %r10, %rdx + testl $0x400, %ecx + cmovnz %r10, %rax + cmovnz %r11, %rdx + movq %rax, (%rsi) + movq %rdx, 8(%rsi) + + /* Bits 12-31 contain the true size of the structure. Copy from + the scratch area to the true destination. */ + shrl $12, %ecx + rep movsb + ret + + /* 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. */ + .align 3 +LUW3: +Lload_sse: + movdqa 48(%r10), %xmm0 + movdqa 64(%r10), %xmm1 + movdqa 80(%r10), %xmm2 + movdqa 96(%r10), %xmm3 + movdqa 112(%r10), %xmm4 + movdqa 128(%r10), %xmm5 + movdqa 144(%r10), %xmm6 + movdqa 160(%r10), %xmm7 + jmp Lret_from_load_sse + +LUW4: + .align 3 + .globl _ffi_closure_unix64 + +_ffi_closure_unix64: +LUW5: + /* The carry flag is set by the trampoline iff SSE registers + are used. Don't clobber it before the branch instruction. */ + leaq -200(%rsp), %rsp +LUW6: + movq %rdi, (%rsp) + movq %rsi, 8(%rsp) + movq %rdx, 16(%rsp) + movq %rcx, 24(%rsp) + movq %r8, 32(%rsp) + movq %r9, 40(%rsp) + jc Lsave_sse +Lret_from_save_sse: + + movq %r10, %rdi + leaq 176(%rsp), %rsi + movq %rsp, %rdx + leaq 208(%rsp), %rcx + call _ffi_closure_unix64_inner + + /* Deallocate stack frame early; return value is now in redzone. */ + addq $200, %rsp +LUW7: + + /* The first byte of the return value contains the FFI_TYPE. */ + movzbl %al, %r10d + leaq Lload_table(%rip), %r11 + movslq (%r11, %r10, 4), %r10 + addq %r11, %r10 + jmp *%r10 + +Lload_table: + .long Lld_void-Lload_table /* FFI_TYPE_VOID */ + .long Lld_int32-Lload_table /* FFI_TYPE_INT */ + .long Lld_float-Lload_table /* FFI_TYPE_FLOAT */ + .long Lld_double-Lload_table /* FFI_TYPE_DOUBLE */ + .long Lld_ldouble-Lload_table /* FFI_TYPE_LONGDOUBLE */ + .long Lld_int8-Lload_table /* FFI_TYPE_UINT8 */ + .long Lld_int8-Lload_table /* FFI_TYPE_SINT8 */ + .long Lld_int16-Lload_table /* FFI_TYPE_UINT16 */ + .long Lld_int16-Lload_table /* FFI_TYPE_SINT16 */ + .long Lld_int32-Lload_table /* FFI_TYPE_UINT32 */ + .long Lld_int32-Lload_table /* FFI_TYPE_SINT32 */ + .long Lld_int64-Lload_table /* FFI_TYPE_UINT64 */ + .long Lld_int64-Lload_table /* FFI_TYPE_SINT64 */ + .long Lld_struct-Lload_table /* FFI_TYPE_STRUCT */ + .long Lld_int64-Lload_table /* FFI_TYPE_POINTER */ + + .text + .align 3 +Lld_void: + ret + .align 3 +Lld_int8: + movzbl -24(%rsp), %eax + ret + .align 3 +Lld_int16: + movzwl -24(%rsp), %eax + ret + .align 3 +Lld_int32: + movl -24(%rsp), %eax + ret + .align 3 +Lld_int64: + movq -24(%rsp), %rax + ret + .align 3 +Lld_float: + movss -24(%rsp), %xmm0 + ret + .align 3 +Lld_double: + movsd -24(%rsp), %xmm0 + ret + .align 3 +Lld_ldouble: + fldt -24(%rsp) + ret + .align 3 +Lld_struct: + /* There are four possibilities here, %rax/%rdx, %xmm0/%rax, + %rax/%xmm0, %xmm0/%xmm1. We collapse two by always loading + both rdx and xmm1 with the second word. For the remaining, + bit 8 set means xmm0 gets the second word, and bit 9 means + that rax gets the second word. */ + movq -24(%rsp), %rcx + movq -16(%rsp), %rdx + movq -16(%rsp), %xmm1 + testl $0x100, %eax + cmovnz %rdx, %rcx + movd %rcx, %xmm0 + testl $0x200, %eax + movq -24(%rsp), %rax + cmovnz %rdx, %rax + ret + + /* See the comment above Lload_sse; the same logic applies here. */ + .align 3 +LUW8: +Lsave_sse: + movdqa %xmm0, 48(%rsp) + movdqa %xmm1, 64(%rsp) + movdqa %xmm2, 80(%rsp) + movdqa %xmm3, 96(%rsp) + movdqa %xmm4, 112(%rsp) + movdqa %xmm5, 128(%rsp) + movdqa %xmm6, 144(%rsp) + movdqa %xmm7, 160(%rsp) + jmp Lret_from_save_sse + +LUW9: +.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support +EH_frame1: + .set L$set$0,LECIE1-LSCIE1 /* CIE Length */ + .long L$set$0 +LSCIE1: + .long 0x0 /* CIE Identifier Tag */ + .byte 0x1 /* CIE Version */ + .ascii "zR\0" /* CIE Augmentation */ + .byte 0x1 /* uleb128 0x1; CIE Code Alignment Factor */ + .byte 0x78 /* sleb128 -8; CIE Data Alignment Factor */ + .byte 0x10 /* CIE RA Column */ + .byte 0x1 /* uleb128 0x1; Augmentation size */ + .byte 0x10 /* FDE Encoding (pcrel sdata4) */ + .byte 0xc /* DW_CFA_def_cfa, %rsp offset 8 */ + .byte 0x7 /* uleb128 0x7 */ + .byte 0x8 /* uleb128 0x8 */ + .byte 0x90 /* DW_CFA_offset, column 0x10 */ + .byte 0x1 + .align 3 +LECIE1: + .globl _ffi_call_unix64.eh +_ffi_call_unix64.eh: +LSFDE1: + .set L$set$1,LEFDE1-LASFDE1 /* FDE Length */ + .long L$set$1 +LASFDE1: + .long LASFDE1-EH_frame1 /* FDE CIE offset */ + .quad LUW0-. /* FDE initial location */ + .set L$set$2,LUW4-LUW0 /* FDE address range */ + .quad L$set$2 + .byte 0x0 /* Augmentation size */ + .byte 0x4 /* DW_CFA_advance_loc4 */ + .set L$set$3,LUW1-LUW0 + .long L$set$3 + + /* New stack frame based off rbp. This is a itty bit of unwind + trickery in that the CFA *has* changed. There is no easy way + to describe it correctly on entry to the function. Fortunately, + it doesn't matter too much since at all points we can correctly + unwind back to ffi_call. Note that the location to which we + moved the return address is (the new) CFA-8, so from the + perspective of the unwind info, it hasn't moved. */ + .byte 0xc /* DW_CFA_def_cfa, %rbp offset 32 */ + .byte 0x6 + .byte 0x20 + .byte 0x80+6 /* DW_CFA_offset, %rbp offset 2*-8 */ + .byte 0x2 + .byte 0xa /* DW_CFA_remember_state */ + + .byte 0x4 /* DW_CFA_advance_loc4 */ + .set L$set$4,LUW2-LUW1 + .long L$set$4 + .byte 0xc /* DW_CFA_def_cfa, %rsp offset 8 */ + .byte 0x7 + .byte 0x8 + .byte 0xc0+6 /* DW_CFA_restore, %rbp */ + + .byte 0x4 /* DW_CFA_advance_loc4 */ + .set L$set$5,LUW3-LUW2 + .long L$set$5 + .byte 0xb /* DW_CFA_restore_state */ + + .align 3 +LEFDE1: + .globl _ffi_closure_unix64.eh +_ffi_closure_unix64.eh: +LSFDE3: + .set L$set$6,LEFDE3-LASFDE3 /* FDE Length */ + .long L$set$6 +LASFDE3: + .long LASFDE3-EH_frame1 /* FDE CIE offset */ + .quad LUW5-. /* FDE initial location */ + .set L$set$7,LUW9-LUW5 /* FDE address range */ + .quad L$set$7 + .byte 0x0 /* Augmentation size */ + + .byte 0x4 /* DW_CFA_advance_loc4 */ + .set L$set$8,LUW6-LUW5 + .long L$set$8 + .byte 0xe /* DW_CFA_def_cfa_offset */ + .byte 208,1 /* uleb128 208 */ + .byte 0xa /* DW_CFA_remember_state */ + + .byte 0x4 /* DW_CFA_advance_loc4 */ + .set L$set$9,LUW7-LUW6 + .long L$set$9 + .byte 0xe /* DW_CFA_def_cfa_offset */ + .byte 0x8 + + .byte 0x4 /* DW_CFA_advance_loc4 */ + .set L$set$10,LUW8-LUW7 + .long L$set$10 + .byte 0xb /* DW_CFA_restore_state */ + + .align 3 +LEFDE3: + .subsections_via_symbols + +#endif /* __x86_64__ */ |