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Diffstat (limited to 'libffi.old/src/ia64/unix.S')
| -rw-r--r-- | libffi.old/src/ia64/unix.S | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/libffi.old/src/ia64/unix.S b/libffi.old/src/ia64/unix.S new file mode 100644 index 0000000..c0c5058 --- /dev/null +++ b/libffi.old/src/ia64/unix.S @@ -0,0 +1,326 @@ +/* ----------------------------------------------------------------------- + unix.S - Copyright (c) 1998 Red Hat, Inc. + Copyright (c) 2000 Hewlett Packard Company + + IA64/unix Foreign Function Interface + + Primary author: Hans Boehm, HP Labs + + Loosely modeled on Cygnus code for other platforms. + + 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 CYGNUS SOLUTIONS 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. + ----------------------------------------------------------------------- */ + +#define LIBFFI_ASM +#include <fficonfig.h> +#include <ffi.h> +#include "ia64_flags.h" + +/* parameters: */ +#define callback in0 +#define ecifp in1 +#define bytes in2 +#define flags in3 +#define raddr in4 +#define fn in5 + +#define FLOAT_SZ 8 /* in-memory size of fp operands */ + +/* Allocate an ia64_args structure on the stack; call ffi_prep_args */ +/* to fill it in with argument values; copy those to the real */ +/* registers, leaving overflow arguments on the stack. Then call fn */ +/* and move the result from registers into *raddr. */ + .pred.safe_across_calls p1-p5,p16-p63 +.text + .align 16 + .global ffi_call_unix + .proc ffi_call_unix +ffi_call_unix: + .prologue + .save ar.pfs,r38 /* loc0 */ + alloc loc0=ar.pfs,6,6,8,0 + .save rp,loc1 + mov loc1=b0; + .vframe loc5 + mov loc5=sp; + .body + sub sp=sp,bytes + mov loc4=r1 /* Save gp */ + ld8 r8=[callback],8 /* code address of callback */ + ;; + mov out0=sp + mov out1=ecifp + mov out2=bytes + ld8 r1=[callback] /* Set up gp for callback. Unnecessary? */ + mov b6=r8 + ;; + br.call.sptk.many b0 = b6 /* call ffi_prep_args */ + cmp.eq p6,p0=0,r8 /* r8 nonzero ==> need fp regs */ + ;; +(p6) add loc2=32+8*FLOAT_SZ,sp +(p6) br.cond.dptk.many fp_done + ;; /* Quiets warning; needed? */ + add loc2=32,sp + add loc3=32+FLOAT_SZ,sp + ;; + ldfd f8=[loc2],2*FLOAT_SZ + ldfd f9=[loc3],2*FLOAT_SZ + ;; + ldfd f10=[loc2],2*FLOAT_SZ + ldfd f11=[loc3],2*FLOAT_SZ + ;; + ldfd f12=[loc2],2*FLOAT_SZ + ldfd f13=[loc3],2*FLOAT_SZ + ;; + ldfd f14=[loc2],2*FLOAT_SZ + ldfd f15=[loc3] +fp_done: + add r9=16,sp /* Pointer to r8_contents */ + /* loc2 points at first integer register value. */ + add loc3=8,loc2 + ;; + ld8 r8=[r9] /* Just in case we return large struct */ + ld8 out0=[loc2],16 + ld8 out1=[loc3],16 + ;; + ld8 out2=[loc2],16 + ld8 out3=[loc3],16 + ;; + ld8 out4=[loc2],16 + ld8 out5=[loc3],16 + ;; + ld8 out6=[loc2] + ld8 out7=[loc3] + /* Set sp to 16 bytes below the first stack parameter. This */ + /* is the value currently in loc2. */ + mov sp=loc2 + + ld8 r8=[fn],8 + ;; + ld8 r1=[fn] /* Set up gp */ + mov b6=r8;; + br.call.sptk.many b0 = b6 /* call fn */ + + /* Handle return value. */ + cmp.eq p6,p0=0,raddr + cmp.eq p7,p0=FFI_TYPE_INT,flags + cmp.eq p10,p0=FFI_IS_SMALL_STRUCT2,flags + cmp.eq p11,p0=FFI_IS_SMALL_STRUCT3,flags + cmp.eq p12,p0=FFI_IS_SMALL_STRUCT4,flags + ;; +(p6) br.cond.dpnt.few done /* Dont copy ret values if raddr = 0 */ +(p7) br.cond.dptk.few copy1 +(p10) br.cond.dpnt.few copy2 +(p11) br.cond.dpnt.few copy3 +(p12) br.cond.dpnt.few copy4 + cmp.eq p8,p0=FFI_TYPE_FLOAT,flags + cmp.eq p9,p0=FFI_TYPE_DOUBLE,flags + tbit.nz p6,p0=flags,FLOAT_FP_AGGREGATE_BIT + tbit.nz p7,p0=flags,DOUBLE_FP_AGGREGATE_BIT + ;; +(p8) stfs [raddr]=f8 +(p9) stfd [raddr]=f8 + ;; + .label_state 1 +(p6) br.cond.dpnt.few handle_float_hfa +(p7) br.cond.dpnt.few handle_double_hfa + br done + +copy4: + add loc3=24,raddr + ;; + st8 [loc3]=r11 +copy3: + add loc3=16,raddr + ;; + st8 [loc3]=r10 +copy2: + add loc3=8,raddr + ;; + st8 [loc3]=r9 +copy1: + st8 [raddr]=r8 + /* In the big struct case, raddr was passed as an argument. */ + /* In the void case there was nothing to do. */ + +done: + mov r1=loc4 /* Restore gp */ + mov ar.pfs = loc0 + mov b0 = loc1 + .restore sp + mov sp = loc5 + br.ret.sptk.many b0 + +handle_double_hfa: + .body + .copy_state 1 + /* Homogeneous floating point array of doubles is returned in */ + /* registers f8-f15. Save one at a time to return area. */ + and flags=0xf,flags /* Retrieve size */ + ;; + cmp.eq p6,p0=2,flags + cmp.eq p7,p0=3,flags + cmp.eq p8,p0=4,flags + cmp.eq p9,p0=5,flags + cmp.eq p10,p0=6,flags + cmp.eq p11,p0=7,flags + cmp.eq p12,p0=8,flags + ;; +(p6) br.cond.dptk.few dhfa2 +(p7) br.cond.dptk.few dhfa3 +(p8) br.cond.dptk.few dhfa4 +(p9) br.cond.dptk.few dhfa5 +(p10) br.cond.dptk.few dhfa6 +(p11) br.cond.dptk.few dhfa7 +dhfa8: add loc3=7*8,raddr + ;; + stfd [loc3]=f15 +dhfa7: add loc3=6*8,raddr + ;; + stfd [loc3]=f14 +dhfa6: add loc3=5*8,raddr + ;; + stfd [loc3]=f13 +dhfa5: add loc3=4*8,raddr + ;; + stfd [loc3]=f12 +dhfa4: add loc3=3*8,raddr + ;; + stfd [loc3]=f11 +dhfa3: add loc3=2*8,raddr + ;; + stfd [loc3]=f10 +dhfa2: add loc3=1*8,raddr + ;; + stfd [loc3]=f9 + stfd [raddr]=f8 + br done + +handle_float_hfa: + /* Homogeneous floating point array of floats is returned in */ + /* registers f8-f15. Save one at a time to return area. */ + and flags=0xf,flags /* Retrieve size */ + ;; + cmp.eq p6,p0=2,flags + cmp.eq p7,p0=3,flags + cmp.eq p8,p0=4,flags + cmp.eq p9,p0=5,flags + cmp.eq p10,p0=6,flags + cmp.eq p11,p0=7,flags + cmp.eq p12,p0=8,flags + ;; +(p6) br.cond.dptk.few shfa2 +(p7) br.cond.dptk.few shfa3 +(p8) br.cond.dptk.few shfa4 +(p9) br.cond.dptk.few shfa5 +(p10) br.cond.dptk.few shfa6 +(p11) br.cond.dptk.few shfa7 +shfa8: add loc3=7*4,raddr + ;; + stfd [loc3]=f15 +shfa7: add loc3=6*4,raddr + ;; + stfd [loc3]=f14 +shfa6: add loc3=5*4,raddr + ;; + stfd [loc3]=f13 +shfa5: add loc3=4*4,raddr + ;; + stfd [loc3]=f12 +shfa4: add loc3=3*4,raddr + ;; + stfd [loc3]=f11 +shfa3: add loc3=2*4,raddr + ;; + stfd [loc3]=f10 +shfa2: add loc3=1*4,raddr + ;; + stfd [loc3]=f9 + stfd [raddr]=f8 + br done + + .endp ffi_call_unix + + + .pred.safe_across_calls p1-p5,p16-p63 +.text + .align 16 + .global ffi_closure_UNIX + .proc ffi_closure_UNIX +ffi_closure_UNIX: + .prologue + .save ar.pfs,r40 /* loc0 */ + alloc loc0=ar.pfs,8,3,2,0 + .save rp,loc1 + mov loc1=b0 + .vframe loc2 + mov loc2=sp + /* Retrieve closure pointer and real gp. */ + mov out0=gp + add gp=16,gp + ;; + ld8 gp=[gp] + /* Reserve a structia64_args on the stack such that arguments */ + /* past the first 8 are automatically placed in the right */ + /* slot. Note that when we start the sp points at 2 8-byte */ + /* scratch words, followed by the extra arguments. */ +# define BASIC_ARGS_SZ (8*FLOAT_SZ+8*8+2*8) +# define FIRST_FP_OFFSET (4*8) + add r14=-(BASIC_ARGS_SZ-FIRST_FP_OFFSET),sp + add r15=-(BASIC_ARGS_SZ-FIRST_FP_OFFSET-FLOAT_SZ),sp + add sp=-BASIC_ARGS_SZ,sp + /* r14 points to fp_regs[0], r15 points to fp_regs[1] */ + ;; + stfd [r14]=f8,2*FLOAT_SZ + stfd [r15]=f9,2*FLOAT_SZ + ;; + stfd [r14]=f10,2*FLOAT_SZ + stfd [r15]=f11,2*FLOAT_SZ + ;; + stfd [r14]=f12,2*FLOAT_SZ + stfd [r15]=f13,2*FLOAT_SZ + ;; + stfd [r14]=f14,FLOAT_SZ+8 + stfd [r15]=f15,2*8 + ;; + /* r14 points to first parameter register area, r15 to second. */ + st8 [r14]=in0,2*8 + st8 [r15]=in1,2*8 + ;; + st8 [r14]=in2,2*8 + st8 [r15]=in3,2*8 + ;; + st8 [r14]=in4,2*8 + st8 [r15]=in5,2*8 + ;; + st8 [r14]=in6,2*8 + st8 [r15]=in7,2*8 + /* Call ffi_closure_UNIX_inner */ + mov out1=sp + br.call.sptk.many b0=ffi_closure_UNIX_inner + ;; + mov b0=loc1 + mov ar.pfs=loc0 + .restore sp + mov sp=loc2 + br.ret.sptk.many b0 + .endp ffi_closure_UNIX + + |