| /* ----------------------------------------------------------------------- |
| darwin.S - Copyright (c) 2000 John Hornkvist |
| Copyright (c) 2004 Free Software Foundation, Inc. |
| |
| PowerPC Assembly glue. |
| |
| 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. |
| ----------------------------------------------------------------------- */ |
| |
| #if defined(__ppc64__) |
| #define MODE_CHOICE(x, y) y |
| #else |
| #define MODE_CHOICE(x, y) x |
| #endif |
| |
| #define g_long MODE_CHOICE(long, quad) /* usage is ".g_long" */ |
| |
| #define LOG2_GPR_BYTES MODE_CHOICE(2,3) /* log2(GPR_BYTES) */ |
| |
| #define LIBFFI_ASM |
| #include <fficonfig.h> |
| #include <ffi.h> |
| #define JUMPTARGET(name) name |
| #define L(x) x |
| .text |
| .align 2 |
| .globl _ffi_prep_args |
| |
| .text |
| .align 2 |
| .globl _ffi_call_DARWIN |
| .text |
| .align 2 |
| _ffi_call_DARWIN: |
| LFB0: |
| mr r12,r8 /* We only need r12 until the call, |
| so it doesn't have to be saved. */ |
| LFB1: |
| /* Save the old stack pointer as AP. */ |
| mr r8,r1 |
| LCFI0: |
| /* Allocate the stack space we need. */ |
| stwux r1,r1,r4 |
| |
| /* Save registers we use. */ |
| mflr r9 |
| |
| stw r28,-16(r8) |
| stw r29,-12(r8) |
| stw r30,-8(r8) |
| stw r31,-4(r8) |
| |
| stw r9,8(r8) |
| stw r2,20(r1) |
| LCFI1: |
| |
| /* Save arguments over call. */ |
| mr r31,r5 /* flags, */ |
| mr r30,r6 /* rvalue, */ |
| mr r29,r7 /* function address, */ |
| mr r28,r8 /* our AP. */ |
| LCFI2: |
| /* Call ffi_prep_args. */ |
| mr r4,r1 |
| li r9,0 |
| |
| mtctr r12 /* r12 holds address of _ffi_prep_args. */ |
| bctrl |
| lwz r2,20(r1) |
| |
| /* Now do the call. |
| Set up cr1 with bits 4-7 of the flags. */ |
| mtcrf 0x40,r31 |
| /* Get the address to call into CTR. */ |
| mtctr r29 |
| /* Load all those argument registers. |
| We have set up a nice stack frame, just load it into registers. */ |
| lwz r3,20+(1*4)(r1) |
| lwz r4,20+(2*4)(r1) |
| lwz r5,20+(3*4)(r1) |
| lwz r6,20+(4*4)(r1) |
| nop |
| lwz r7,20+(5*4)(r1) |
| lwz r8,20+(6*4)(r1) |
| lwz r9,20+(7*4)(r1) |
| lwz r10,20+(8*4)(r1) |
| |
| L1: |
| /* Load all the FP registers. */ |
| bf 6,L2 /* No floats to load. */ |
| lfd f1,-16-(13*8)(r28) |
| lfd f2,-16-(12*8)(r28) |
| lfd f3,-16-(11*8)(r28) |
| lfd f4,-16-(10*8)(r28) |
| nop |
| lfd f5,-16-(9*8)(r28) |
| lfd f6,-16-(8*8)(r28) |
| lfd f7,-16-(7*8)(r28) |
| lfd f8,-16-(6*8)(r28) |
| nop |
| lfd f9,-16-(5*8)(r28) |
| lfd f10,-16-(4*8)(r28) |
| lfd f11,-16-(3*8)(r28) |
| lfd f12,-16-(2*8)(r28) |
| nop |
| lfd f13,-16-(1*8)(r28) |
| |
| L2: |
| mr r12,r29 /* Put the target address in r12 as specified. */ |
| mtctr r12 |
| nop |
| nop |
| /* Make the call. */ |
| bctrl |
| |
| /* Now, deal with the return value. */ |
| mtcrf 0x01,r31 |
| |
| bt 30,L(done_return_value) |
| bt 29,L(fp_return_value) |
| stw r3,0(r30) |
| bf 28,L(done_return_value) |
| stw r4,4(r30) |
| |
| /* Fall through. */ |
| |
| L(done_return_value): |
| /* Restore the registers we used and return. */ |
| lwz r9,8(r28) |
| lwz r31,-4(r28) |
| mtlr r9 |
| lwz r30,-8(r28) |
| lwz r29,-12(r28) |
| lwz r28,-16(r28) |
| lwz r1,0(r1) |
| blr |
| |
| L(fp_return_value): |
| /* Do we have long double to store? */ |
| bf 31,L(fd_return_value) |
| stfd f1,0(r30) |
| stfd f2,8(r30) |
| b L(done_return_value) |
| |
| L(fd_return_value): |
| /* Do we have double to store? */ |
| bf 28,L(float_return_value) |
| stfd f1,0(r30) |
| b L(done_return_value) |
| |
| L(float_return_value): |
| /* We only have a float to store. */ |
| stfs f1,0(r30) |
| b L(done_return_value) |
| |
| LFE1: |
| /* END(_ffi_call_DARWIN) */ |
| |
| /* Provide a null definition of _ffi_call_AIX. */ |
| .text |
| .align 2 |
| .globl _ffi_call_AIX |
| .text |
| .align 2 |
| _ffi_call_AIX: |
| blr |
| /* END(_ffi_call_AIX) */ |
| |
| .data |
| .section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms |
| EH_frame1: |
| .set L$set$0,LECIE1-LSCIE1 |
| .long L$set$0 ; Length of Common Information Entry |
| LSCIE1: |
| .long 0x0 ; CIE Identifier Tag |
| .byte 0x1 ; CIE Version |
| .ascii "zR\0" ; CIE Augmentation |
| .byte 0x1 ; uleb128 0x1; CIE Code Alignment Factor |
| .byte 0x7c ; sleb128 -4; CIE Data Alignment Factor |
| .byte 0x41 ; CIE RA Column |
| .byte 0x1 ; uleb128 0x1; Augmentation size |
| .byte 0x90 ; FDE Encoding (indirect pcrel) |
| .byte 0xc ; DW_CFA_def_cfa |
| .byte 0x1 ; uleb128 0x1 |
| .byte 0x0 ; uleb128 0x0 |
| .align LOG2_GPR_BYTES |
| LECIE1: |
| .globl _ffi_call_DARWIN.eh |
| _ffi_call_DARWIN.eh: |
| LSFDE1: |
| .set L$set$1,LEFDE1-LASFDE1 |
| .long L$set$1 ; FDE Length |
| LASFDE1: |
| .long LASFDE1-EH_frame1 ; FDE CIE offset |
| .g_long LLFB0$non_lazy_ptr-. ; FDE initial location |
| .set L$set$3,LFE1-LFB0 |
| .g_long L$set$3 ; FDE address range |
| .byte 0x0 ; uleb128 0x0; Augmentation size |
| .byte 0x4 ; DW_CFA_advance_loc4 |
| .set L$set$4,LCFI0-LFB1 |
| .long L$set$4 |
| .byte 0xd ; DW_CFA_def_cfa_register |
| .byte 0x08 ; uleb128 0x08 |
| .byte 0x4 ; DW_CFA_advance_loc4 |
| .set L$set$5,LCFI1-LCFI0 |
| .long L$set$5 |
| .byte 0x11 ; DW_CFA_offset_extended_sf |
| .byte 0x41 ; uleb128 0x41 |
| .byte 0x7e ; sleb128 -2 |
| .byte 0x9f ; DW_CFA_offset, column 0x1f |
| .byte 0x1 ; uleb128 0x1 |
| .byte 0x9e ; DW_CFA_offset, column 0x1e |
| .byte 0x2 ; uleb128 0x2 |
| .byte 0x9d ; DW_CFA_offset, column 0x1d |
| .byte 0x3 ; uleb128 0x3 |
| .byte 0x9c ; DW_CFA_offset, column 0x1c |
| .byte 0x4 ; uleb128 0x4 |
| .byte 0x4 ; DW_CFA_advance_loc4 |
| .set L$set$6,LCFI2-LCFI1 |
| .long L$set$6 |
| .byte 0xd ; DW_CFA_def_cfa_register |
| .byte 0x1c ; uleb128 0x1c |
| .align LOG2_GPR_BYTES |
| LEFDE1: |
| .data |
| .align LOG2_GPR_BYTES |
| LLFB0$non_lazy_ptr: |
| .g_long LFB0 |
