diff options
Diffstat (limited to 'gcc-4.4.3/libffi/src/powerpc/aix_closure.S')
| -rw-r--r-- | gcc-4.4.3/libffi/src/powerpc/aix_closure.S | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/gcc-4.4.3/libffi/src/powerpc/aix_closure.S b/gcc-4.4.3/libffi/src/powerpc/aix_closure.S new file mode 100644 index 000000000..7bf5c6560 --- /dev/null +++ b/gcc-4.4.3/libffi/src/powerpc/aix_closure.S @@ -0,0 +1,247 @@ +/* ----------------------------------------------------------------------- + aix_closure.S - Copyright (c) 2002 2003 Free Software Foundation, Inc. + based on darwin_closure.S + + 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. + ----------------------------------------------------------------------- */ + + .set r0,0 + .set r1,1 + .set r2,2 + .set r3,3 + .set r4,4 + .set r5,5 + .set r6,6 + .set r7,7 + .set r8,8 + .set r9,9 + .set r10,10 + .set r11,11 + .set r12,12 + .set r13,13 + .set r14,14 + .set r15,15 + .set r16,16 + .set r17,17 + .set r18,18 + .set r19,19 + .set r20,20 + .set r21,21 + .set r22,22 + .set r23,23 + .set r24,24 + .set r25,25 + .set r26,26 + .set r27,27 + .set r28,28 + .set r29,29 + .set r30,30 + .set r31,31 + .set f0,0 + .set f1,1 + .set f2,2 + .set f3,3 + .set f4,4 + .set f5,5 + .set f6,6 + .set f7,7 + .set f8,8 + .set f9,9 + .set f10,10 + .set f11,11 + .set f12,12 + .set f13,13 + .set f14,14 + .set f15,15 + .set f16,16 + .set f17,17 + .set f18,18 + .set f19,19 + .set f20,20 + .set f21,21 + +#define LIBFFI_ASM +#define JUMPTARGET(name) name +#define L(x) x + .file "aix_closure.S" + .toc +LC..60: + .tc L..60[TC],L..60 + .csect .text[PR] + .align 2 + +.csect .text[PR] + .align 2 + .globl ffi_closure_ASM + .globl .ffi_closure_ASM +.csect ffi_closure_ASM[DS] + +ffi_closure_ASM: + .long .ffi_closure_ASM, TOC[tc0], 0 + .csect .text[PR] +.ffi_closure_ASM: + + mflr r0 /* extract return address */ + stw r0, 8(r1) /* save the return address */ + + /* 24 Bytes (Linkage Area) */ + /* 32 Bytes (params) */ + /* 104 Bytes (13*8 from FPR) */ + /* 8 Bytes (result) */ + /* 168 Bytes */ + + stwu r1,-176(r1) /* skip over caller save area + keep stack aligned to 16 */ + +/* we want to build up an area for the parameters passed */ +/* in registers (both floating point and integer) */ + + /* we store gpr 3 to gpr 10 (aligned to 4) + in the parents outgoing area */ + stw r3, 200(r1) + stw r4, 204(r1) + stw r5, 208(r1) + stw r6, 212(r1) + stw r7, 216(r1) + stw r8, 220(r1) + stw r9, 224(r1) + stw r10, 228(r1) + + /* next save fpr 1 to fpr 13 (aligned to 8) */ + stfd f1, 56(r1) + stfd f2, 64(r1) + stfd f3, 72(r1) + stfd f4, 80(r1) + stfd f5, 88(r1) + stfd f6, 96(r1) + stfd f7, 104(r1) + stfd f8, 112(r1) + stfd f9, 120(r1) + stfd f10, 128(r1) + stfd f11, 136(r1) + stfd f12, 144(r1) + stfd f13, 152(r1) + + /* set up registers for the routine that actually does the work */ + /* get the context pointer from the trampoline */ + mr r3,r11 + + /* now load up the pointer to the result storage */ + addi r4,r1,160 + + /* now load up the pointer to the saved gpr registers */ + addi r5,r1,200 + + /* now load up the pointer to the saved fpr registers */ + addi r6,r1,56 + + /* make the call */ + bl .ffi_closure_helper_DARWIN + nop + + /* now r3 contains the return type */ + /* so use it to look up in a table */ + /* so we know how to deal with each type */ + + /* look up the proper starting point in table */ + /* by using return type as offset */ + addi r5,r1,160 /* get pointer to results area */ + lwz r4,LC..60(2) /* get address of jump table */ + slwi r3,r3,2 /* now multiply return type by 4 */ + lwzx r3,r4,r3 /* get the contents of that table value */ + add r3,r3,r4 /* add contents of table to table address */ + mtctr r3 + bctr /* jump to it */ + +L..60: + .long L..44-L..60 /* FFI_TYPE_VOID */ + .long L..50-L..60 /* FFI_TYPE_INT */ + .long L..47-L..60 /* FFI_TYPE_FLOAT */ + .long L..46-L..60 /* FFI_TYPE_DOUBLE */ + .long L..46-L..60 /* FFI_TYPE_LONGDOUBLE */ + .long L..56-L..60 /* FFI_TYPE_UINT8 */ + .long L..55-L..60 /* FFI_TYPE_SINT8 */ + .long L..58-L..60 /* FFI_TYPE_UINT16 */ + .long L..57-L..60 /* FFI_TYPE_SINT16 */ + .long L..50-L..60 /* FFI_TYPE_UINT32 */ + .long L..50-L..60 /* FFI_TYPE_SINT32 */ + .long L..48-L..60 /* FFI_TYPE_UINT64 */ + .long L..48-L..60 /* FFI_TYPE_SINT64 */ + .long L..44-L..60 /* FFI_TYPE_STRUCT */ + .long L..50-L..60 /* FFI_TYPE_POINTER */ + + +/* case double */ +L..46: + lfd f1,0(r5) + b L..44 + +/* case float */ +L..47: + lfs f1,0(r5) + b L..44 + +/* case long long */ +L..48: + lwz r3,0(r5) + lwz r4,4(r5) + b L..44 + +/* case default / int32 / pointer */ +L..50: + lwz r3,0(r5) + b L..44 + +/* case signed int8 */ +L..55: + addi r5,r5,3 + lbz r3,0(r5) + slwi r3,r3,24 + srawi r3,r3,24 + b L..44 + +/* case unsigned int8 */ +L..56: + addi r5,r5,3 + lbz r3,0(r5) + b L..44 + +/* case signed int16 */ +L..57: + addi r5,r5,2 + lhz r3,0(r5) + extsh r3,r3 + b L..44 + +/* case unsigned int16 */ +L..58: + addi r5,r5,2 + lhz r3,0(r5) + +/* case void / done */ +L..44: + addi r1,r1,176 /* restore stack pointer */ + lwz r0,8(r1) /* get return address */ + mtlr r0 /* reset link register */ + blr + +/* END(ffi_closure_ASM) */ |