diff options
Diffstat (limited to 'libffi/src/powerpc/aix_closure.S')
| -rw-r--r-- | libffi/src/powerpc/aix_closure.S | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/libffi/src/powerpc/aix_closure.S b/libffi/src/powerpc/aix_closure.S new file mode 100644 index 000000000..aabd3c3c1 --- /dev/null +++ b/libffi/src/powerpc/aix_closure.S @@ -0,0 +1,447 @@ +/* ----------------------------------------------------------------------- + aix_closure.S - Copyright (c) 2002, 2003, 2009 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 + + .extern .ffi_closure_helper_DARWIN + +#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: +#ifdef __64BIT__ + .llong .ffi_closure_ASM, TOC[tc0], 0 + .csect .text[PR] +.ffi_closure_ASM: +/* 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 */ + std r3, 48+(0*8)(r1) + std r4, 48+(1*8)(r1) + std r5, 48+(2*8)(r1) + std r6, 48+(3*8)(r1) + mflr r0 + + std r7, 48+(4*8)(r1) + std r8, 48+(5*8)(r1) + std r9, 48+(6*8)(r1) + std r10, 48+(7*8)(r1) + std r0, 16(r1) /* save the return address */ + + + /* 48 Bytes (Linkage Area) */ + /* 64 Bytes (params) */ + /* 16 Bytes (result) */ + /* 104 Bytes (13*8 from FPR) */ + /* 8 Bytes (alignment) */ + /* 240 Bytes */ + + stdu r1, -240(r1) /* skip over caller save area + keep stack aligned to 16 */ + + /* next save fpr 1 to fpr 13 (aligned to 8) */ + stfd f1, 128+(0*8)(r1) + stfd f2, 128+(1*8)(r1) + stfd f3, 128+(2*8)(r1) + stfd f4, 128+(3*8)(r1) + stfd f5, 128+(4*8)(r1) + stfd f6, 128+(5*8)(r1) + stfd f7, 128+(6*8)(r1) + stfd f8, 128+(7*8)(r1) + stfd f9, 128+(8*8)(r1) + stfd f10, 128+(9*8)(r1) + stfd f11, 128+(10*8)(r1) + stfd f12, 128+(11*8)(r1) + stfd f13, 128+(12*8)(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, 112 + + /* now load up the pointer to the saved gpr registers */ + addi r5, r1, 288 + + /* now load up the pointer to the saved fpr registers */ + addi r6, r1, 128 + + /* 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 */ + lhz r3, 10(r3) /* load type from return type */ + ld r4, LC..60(2) /* get address of jump table */ + sldi r3, r3, 4 /* now multiply return type by 16 */ + ld r0, 240+16(r1) /* load return address */ + add r3, r3, r4 /* add contents of table to table address */ + mtctr r3 + bctr /* jump to it */ + +/* Each fragment must be exactly 16 bytes long (4 instructions). + Align to 16 byte boundary for cache and dispatch efficiency. */ + .align 4 + +L..60: +/* case FFI_TYPE_VOID */ + mtlr r0 + addi r1, r1, 240 + blr + nop + +/* case FFI_TYPE_INT */ + lwa r3, 112+4(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_FLOAT */ + lfs f1, 112+0(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_DOUBLE */ + lfd f1, 112+0(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_LONGDOUBLE */ + lfd f1, 112+0(r1) + mtlr r0 + lfd f2, 112+8(r1) + b L..finish + +/* case FFI_TYPE_UINT8 */ + lbz r3, 112+7(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_SINT8 */ + lbz r3, 112+7(r1) + mtlr r0 + extsb r3, r3 + b L..finish + +/* case FFI_TYPE_UINT16 */ + lhz r3, 112+6(r1) + mtlr r0 +L..finish: + addi r1, r1, 240 + blr + +/* case FFI_TYPE_SINT16 */ + lha r3, 112+6(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_UINT32 */ + lwz r3, 112+4(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_SINT32 */ + lwa r3, 112+4(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_UINT64 */ + ld r3, 112+0(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_SINT64 */ + ld r3, 112+0(r1) + mtlr r0 + addi r1, r1, 240 + blr + +/* case FFI_TYPE_STRUCT */ + mtlr r0 + addi r1, r1, 240 + blr + nop + +/* case FFI_TYPE_POINTER */ + ld r3, 112+0(r1) + mtlr r0 + addi r1, r1, 240 + blr + +#else /* ! __64BIT__ */ + + .long .ffi_closure_ASM, TOC[tc0], 0 + .csect .text[PR] +.ffi_closure_ASM: +/* 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, 24+(0*4)(r1) + stw r4, 24+(1*4)(r1) + stw r5, 24+(2*4)(r1) + stw r6, 24+(3*4)(r1) + mflr r0 + + stw r7, 24+(4*4)(r1) + stw r8, 24+(5*4)(r1) + stw r9, 24+(6*4)(r1) + stw r10, 24+(7*4)(r1) + stw r0, 8(r1) + + /* 24 Bytes (Linkage Area) */ + /* 32 Bytes (params) */ + /* 16 Bytes (result) */ + /* 104 Bytes (13*8 from FPR) */ + /* 176 Bytes */ + + stwu r1, -176(r1) /* skip over caller save area + keep stack aligned to 16 */ + + /* next save fpr 1 to fpr 13 (aligned to 8) */ + stfd f1, 72+(0*8)(r1) + stfd f2, 72+(1*8)(r1) + stfd f3, 72+(2*8)(r1) + stfd f4, 72+(3*8)(r1) + stfd f5, 72+(4*8)(r1) + stfd f6, 72+(5*8)(r1) + stfd f7, 72+(6*8)(r1) + stfd f8, 72+(7*8)(r1) + stfd f9, 72+(8*8)(r1) + stfd f10, 72+(9*8)(r1) + stfd f11, 72+(10*8)(r1) + stfd f12, 72+(11*8)(r1) + stfd f13, 72+(12*8)(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, 56 + + /* 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, 72 + + /* 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 */ + lhz r3, 6(r3) /* load type from return type */ + lwz r4, LC..60(2) /* get address of jump table */ + slwi r3, r3, 4 /* now multiply return type by 16 */ + lwz r0, 176+8(r1) /* load return address */ + add r3, r3, r4 /* add contents of table to table address */ + mtctr r3 + bctr /* jump to it */ + +/* Each fragment must be exactly 16 bytes long (4 instructions). + Align to 16 byte boundary for cache and dispatch efficiency. */ + .align 4 + +L..60: +/* case FFI_TYPE_VOID */ + mtlr r0 + addi r1, r1, 176 + blr + nop + +/* case FFI_TYPE_INT */ + lwz r3, 56+0(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_FLOAT */ + lfs f1, 56+0(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_DOUBLE */ + lfd f1, 56+0(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_LONGDOUBLE */ + lfd f1, 56+0(r1) + mtlr r0 + lfd f2, 56+8(r1) + b L..finish + +/* case FFI_TYPE_UINT8 */ + lbz r3, 56+3(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_SINT8 */ + lbz r3, 56+3(r1) + mtlr r0 + extsb r3, r3 + b L..finish + +/* case FFI_TYPE_UINT16 */ + lhz r3, 56+2(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_SINT16 */ + lha r3, 56+2(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_UINT32 */ + lwz r3, 56+0(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_SINT32 */ + lwz r3, 56+0(r1) + mtlr r0 + addi r1, r1, 176 + blr + +/* case FFI_TYPE_UINT64 */ + lwz r3, 56+0(r1) + mtlr r0 + lwz r4, 56+4(r1) + b L..finish + +/* case FFI_TYPE_SINT64 */ + lwz r3, 56+0(r1) + mtlr r0 + lwz r4, 56+4(r1) + b L..finish + +/* case FFI_TYPE_STRUCT */ + mtlr r0 + addi r1, r1, 176 + blr + nop + +/* case FFI_TYPE_POINTER */ + lwz r3, 56+0(r1) + mtlr r0 +L..finish: + addi r1, r1, 176 + blr +#endif +/* END(ffi_closure_ASM) */ |