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Diffstat (limited to 'libffi/src/powerpc/aix.S')
| -rw-r--r-- | libffi/src/powerpc/aix.S | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/libffi/src/powerpc/aix.S b/libffi/src/powerpc/aix.S new file mode 100644 index 000000000..213f2db39 --- /dev/null +++ b/libffi/src/powerpc/aix.S @@ -0,0 +1,328 @@ +/* ----------------------------------------------------------------------- + aix.S - Copyright (c) 2002, 2009 Free Software Foundation, Inc. + based on darwin.S by John Hornkvist + + 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_prep_args + +#define LIBFFI_ASM +#include <fficonfig.h> +#include <ffi.h> +#define JUMPTARGET(name) name +#define L(x) x + .file "aix.S" + .toc + + /* void ffi_call_AIX(extended_cif *ecif, unsigned long bytes, + * unsigned int flags, unsigned int *rvalue, + * void (*fn)(), + * void (*prep_args)(extended_cif*, unsigned *const)); + * r3=ecif, r4=bytes, r5=flags, r6=rvalue, r7=fn, r8=prep_args + */ + +.csect .text[PR] + .align 2 + .globl ffi_call_AIX + .globl .ffi_call_AIX +.csect ffi_call_AIX[DS] +ffi_call_AIX: +#ifdef __64BIT__ + .llong .ffi_call_AIX, TOC[tc0], 0 + .csect .text[PR] +.ffi_call_AIX: + /* Save registers we use. */ + mflr r0 + + std r28,-32(r1) + std r29,-24(r1) + std r30,-16(r1) + std r31, -8(r1) + + std r0, 16(r1) + mr r28, r1 /* our AP. */ + stdux r1, r1, r4 + + /* Save arguments over call... */ + mr r31, r5 /* flags, */ + mr r30, r6 /* rvalue, */ + mr r29, r7 /* function address. */ + std r2, 40(r1) + + /* Call ffi_prep_args. */ + mr r4, r1 + bl .ffi_prep_args + nop + + /* Now do the call. */ + ld r0, 0(r29) + ld r2, 8(r29) + ld r11, 16(r29) + /* Set up cr1 with bits 4-7 of the flags. */ + mtcrf 0x40, r31 + mtctr r0 + /* Load all those argument registers. */ + // We have set up a nice stack frame, just load it into registers. + ld r3, 40+(1*8)(r1) + ld r4, 40+(2*8)(r1) + ld r5, 40+(3*8)(r1) + ld r6, 40+(4*8)(r1) + nop + ld r7, 40+(5*8)(r1) + ld r8, 40+(6*8)(r1) + ld r9, 40+(7*8)(r1) + ld r10,40+(8*8)(r1) + +L1: + /* Load all the FP registers. */ + bf 6,L2 // 2f + 0x18 + lfd f1,-32-(13*8)(r28) + lfd f2,-32-(12*8)(r28) + lfd f3,-32-(11*8)(r28) + lfd f4,-32-(10*8)(r28) + nop + lfd f5,-32-(9*8)(r28) + lfd f6,-32-(8*8)(r28) + lfd f7,-32-(7*8)(r28) + lfd f8,-32-(6*8)(r28) + nop + lfd f9,-32-(5*8)(r28) + lfd f10,-32-(4*8)(r28) + lfd f11,-32-(3*8)(r28) + lfd f12,-32-(2*8)(r28) + nop + lfd f13,-32-(1*8)(r28) + +L2: + /* Make the call. */ + bctrl + ld r2, 40(r1) + + /* Now, deal with the return value. */ + mtcrf 0x01, r31 + + bt 30, L(done_return_value) + bt 29, L(fp_return_value) + std r3, 0(r30) + + /* Fall through... */ + +L(done_return_value): + /* Restore the registers we used and return. */ + mr r1, r28 + ld r0, 16(r28) + ld r28, -32(r1) + mtlr r0 + ld r29, -24(r1) + ld r30, -16(r1) + ld r31, -8(r1) + blr + +L(fp_return_value): + bf 28, L(float_return_value) + stfd f1, 0(r30) + bf 31, L(done_return_value) + stfd f2, 8(r30) + b L(done_return_value) +L(float_return_value): + stfs f1, 0(r30) + b L(done_return_value) + +#else /* ! __64BIT__ */ + + .long .ffi_call_AIX, TOC[tc0], 0 + .csect .text[PR] +.ffi_call_AIX: + /* Save registers we use. */ + mflr r0 + + stw r28,-16(r1) + stw r29,-12(r1) + stw r30, -8(r1) + stw r31, -4(r1) + + stw r0, 8(r1) + mr r28, r1 /* out AP. */ + stwux r1, r1, r4 + + /* Save arguments over call... */ + mr r31, r5 /* flags, */ + mr r30, r6 /* rvalue, */ + mr r29, r7 /* function address, */ + stw r2, 20(r1) + + /* Call ffi_prep_args. */ + mr r4, r1 + bl .ffi_prep_args + nop + + /* Now do the call. */ + lwz r0, 0(r29) + lwz r2, 4(r29) + lwz r11, 8(r29) + /* Set up cr1 with bits 4-7 of the flags. */ + mtcrf 0x40, r31 + mtctr r0 + /* 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 // 2f + 0x18 + 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: + /* Make the call. */ + bctrl + lwz r2, 20(r1) + + /* 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. */ + mr r1, r28 + lwz r0, 8(r28) + lwz r28,-16(r1) + mtlr r0 + lwz r29,-12(r1) + lwz r30, -8(r1) + lwz r31, -4(r1) + blr + +L(fp_return_value): + bf 28, L(float_return_value) + stfd f1, 0(r30) + b L(done_return_value) +L(float_return_value): + stfs f1, 0(r30) + b L(done_return_value) +#endif + .long 0 + .byte 0,0,0,1,128,4,0,0 +//END(ffi_call_AIX) + +.csect .text[PR] + .align 2 + .globl ffi_call_DARWIN + .globl .ffi_call_DARWIN +.csect ffi_call_DARWIN[DS] +ffi_call_DARWIN: +#ifdef __64BIT__ + .llong .ffi_call_DARWIN, TOC[tc0], 0 +#else + .long .ffi_call_DARWIN, TOC[tc0], 0 +#endif + .csect .text[PR] +.ffi_call_DARWIN: + blr + .long 0 + .byte 0,0,0,0,0,0,0,0 +//END(ffi_call_DARWIN) |