1 /* ----------------------------------------------------------------------- 2 eabi.S - Copyright (c) 2012, 2013 Anthony Green 3 4 Moxie Assembly glue. 5 6 Permission is hereby granted, free of charge, to any person obtaining 7 a copy of this software and associated documentation files (the 8 ``Software''), to deal in the Software without restriction, including 9 without limitation the rights to use, copy, modify, merge, publish, 10 distribute, sublicense, and/or sell copies of the Software, and to 11 permit persons to whom the Software is furnished to do so, subject to 12 the following conditions: 13 14 The above copyright notice and this permission notice shall be included 15 in all copies or substantial portions of the Software. 16 17 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 OTHER DEALINGS IN THE SOFTWARE. 24 ----------------------------------------------------------------------- */ 25 26 #define LIBFFI_ASM 27 #include <fficonfig.h> 28 #include <ffi.h> 29 30 .globl ffi_prep_args_EABI 31 32 .text 33 .p2align 4 34 .globl ffi_call_EABI 35 .type ffi_call_EABI, @function 36 37 # $r0 : ffi_prep_args 38 # $r1 : &ecif 39 # $r2 : cif->bytes 40 # $r3 : fig->flags 41 # $r4 : ecif.rvalue 42 # $r5 : fn 43 44 ffi_call_EABI: 45 push $sp, $r6 46 push $sp, $r7 47 push $sp, $r8 48 dec $sp, 24 49 50 /* Store incoming args on stack. */ 51 sto.l 0($sp), $r0 /* ffi_prep_args */ 52 sto.l 4($sp), $r1 /* ecif */ 53 sto.l 8($sp), $r2 /* bytes */ 54 sto.l 12($sp), $r3 /* flags */ 55 sto.l 16($sp), $r4 /* &rvalue */ 56 sto.l 20($sp), $r5 /* fn */ 57 58 /* Call ffi_prep_args. */ 59 mov $r6, $r4 /* Save result buffer */ 60 mov $r7, $r5 /* Save the target fn */ 61 mov $r8, $r3 /* Save the flags */ 62 sub.l $sp, $r2 /* Allocate stack space */ 63 mov $r0, $sp /* We can stomp over $r0 */ 64 /* $r1 is already set up */ 65 jsra ffi_prep_args 66 67 /* Load register arguments. */ 68 ldo.l $r0, 0($sp) 69 ldo.l $r1, 4($sp) 70 ldo.l $r2, 8($sp) 71 ldo.l $r3, 12($sp) 72 ldo.l $r4, 16($sp) 73 ldo.l $r5, 20($sp) 74 75 /* Call the target function. */ 76 jsr $r7 77 78 ldi.l $r7, 0xffffffff 79 cmp $r8, $r7 80 beq retstruct 81 82 ldi.l $r7, 4 83 cmp $r8, $r7 84 bgt ret2reg 85 86 st.l ($r6), $r0 87 jmpa retdone 88 89 ret2reg: 90 st.l ($r6), $r0 91 sto.l 4($r6), $r1 92 93 retstruct: 94 retdone: 95 /* Return. */ 96 ldo.l $r6, -4($fp) 97 ldo.l $r7, -8($fp) 98 ldo.l $r8, -12($fp) 99 ret 100 .size ffi_call_EABI, .-ffi_call_EABI 101 102
