/* ----------------------------------------------------------------------- sysv.S - Copyright (c) 2012 Alan Hourihane Copyright (c) 1998, 2012 Andreas Schwab Copyright (c) 2008 Red Hat, Inc. Copyright (c) 2012 Thorsten Glaser m68k Foreign Function Interface 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 AUTHORS OR COPYRIGHT HOLDERS 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 #include #ifdef HAVE_AS_CFI_PSEUDO_OP #define CFI_STARTPROC() .cfi_startproc #define CFI_OFFSET(reg,off) .cfi_offset reg,off #define CFI_DEF_CFA(reg,off) .cfi_def_cfa reg,off #define CFI_ENDPROC() .cfi_endproc #else #define CFI_STARTPROC() #define CFI_OFFSET(reg,off) #define CFI_DEF_CFA(reg,off) #define CFI_ENDPROC() #endif #ifdef __MINT__ #define CALLFUNC(funcname) _ ## funcname #else #define CALLFUNC(funcname) funcname #endif .text .globl CALLFUNC(ffi_call_SYSV) .type CALLFUNC(ffi_call_SYSV),@function .align 4 CALLFUNC(ffi_call_SYSV): CFI_STARTPROC() link %fp,#0 CFI_OFFSET(14,-8) CFI_DEF_CFA(14,8) move.l %d2,-(%sp) CFI_OFFSET(2,-12) | Make room for all of the new args. sub.l 12(%fp),%sp | Call ffi_prep_args move.l 8(%fp),-(%sp) pea 4(%sp) #if !defined __PIC__ jsr CALLFUNC(ffi_prep_args) #else bsr.l CALLFUNC(ffi_prep_args@PLTPC) #endif addq.l #8,%sp | Pass pointer to struct value, if any #ifdef __MINT__ move.l %d0,%a1 #else move.l %a0,%a1 #endif | Call the function move.l 24(%fp),%a0 jsr (%a0) | Remove the space we pushed for the args add.l 12(%fp),%sp | Load the pointer to storage for the return value move.l 20(%fp),%a1 | Load the return type code move.l 16(%fp),%d2 | If the return value pointer is NULL, assume no return value. | NOTE: On the mc68000, tst on an address register is not supported. #if !defined(__mc68020__) && !defined(__mc68030__) && !defined(__mc68040__) && !defined(__mc68060__) && !defined(__mcoldfire__) cmp.w #0, %a1 #else tst.l %a1 #endif jbeq noretval btst #0,%d2 jbeq retlongint move.l %d0,(%a1) jbra epilogue retlongint: btst #1,%d2 jbeq retfloat move.l %d0,(%a1) move.l %d1,4(%a1) jbra epilogue retfloat: btst #2,%d2 jbeq retdouble #if defined(__MC68881__) || defined(__HAVE_68881__) fmove.s %fp0,(%a1) #else move.l %d0,(%a1) #endif jbra epilogue retdouble: btst #3,%d2 jbeq retlongdouble #if defined(__MC68881__) || defined(__HAVE_68881__) fmove.d %fp0,(%a1) #else move.l %d0,(%a1)+ move.l %d1,(%a1) #endif jbra epilogue retlongdouble: btst #4,%d2 jbeq retpointer #if defined(__MC68881__) || defined(__HAVE_68881__) fmove.x %fp0,(%a1) #else move.l %d0,(%a1)+ move.l %d1,(%a1)+ move.l %d2,(%a1) #endif jbra epilogue retpointer: btst #5,%d2 jbeq retstruct1 #ifdef __MINT__ move.l %d0,(%a1) #else move.l %a0,(%a1) #endif jbra epilogue retstruct1: btst #6,%d2 jbeq retstruct2 move.b %d0,(%a1) jbra epilogue retstruct2: btst #7,%d2 jbeq retsint8 move.w %d0,(%a1) jbra epilogue retsint8: btst #8,%d2 jbeq retsint16 | NOTE: On the mc68000, extb is not supported. 8->16, then 16->32. #if !defined(__mc68020__) && !defined(__mc68030__) && !defined(__mc68040__) && !defined(__mc68060__) && !defined(__mcoldfire__) ext.w %d0 ext.l %d0 #else extb.l %d0 #endif move.l %d0,(%a1) jbra epilogue retsint16: btst #9,%d2 jbeq noretval ext.l %d0 move.l %d0,(%a1) noretval: epilogue: move.l (%sp)+,%d2 unlk %fp rts CFI_ENDPROC() .size CALLFUNC(ffi_call_SYSV),.-CALLFUNC(ffi_call_SYSV) .globl CALLFUNC(ffi_closure_SYSV) .type CALLFUNC(ffi_closure_SYSV), @function .align 4 CALLFUNC(ffi_closure_SYSV): CFI_STARTPROC() link %fp,#-12 CFI_OFFSET(14,-8) CFI_DEF_CFA(14,8) move.l %sp,-12(%fp) pea 8(%fp) pea -12(%fp) move.l %a0,-(%sp) #if !defined __PIC__ jsr CALLFUNC(ffi_closure_SYSV_inner) #else bsr.l CALLFUNC(ffi_closure_SYSV_inner@PLTPC) #endif lsr.l #1,%d0 jne 1f jcc .Lcls_epilogue | CIF_FLAGS_INT move.l -12(%fp),%d0 .Lcls_epilogue: | no CIF_FLAGS_* unlk %fp rts 1: lea -12(%fp),%a0 lsr.l #2,%d0 jne 1f jcs .Lcls_ret_float | CIF_FLAGS_DINT move.l (%a0)+,%d0 move.l (%a0),%d1 jra .Lcls_epilogue .Lcls_ret_float: #if defined(__MC68881__) || defined(__HAVE_68881__) fmove.s (%a0),%fp0 #else move.l (%a0),%d0 #endif jra .Lcls_epilogue 1: lsr.l #2,%d0 jne 1f jcs .Lcls_ret_ldouble | CIF_FLAGS_DOUBLE #if defined(__MC68881__) || defined(__HAVE_68881__) fmove.d (%a0),%fp0 #else move.l (%a0)+,%d0 move.l (%a0),%d1 #endif jra .Lcls_epilogue .Lcls_ret_ldouble: #if defined(__MC68881__) || defined(__HAVE_68881__) fmove.x (%a0),%fp0 #else move.l (%a0)+,%d0 move.l (%a0)+,%d1 move.l (%a0),%d2 #endif jra .Lcls_epilogue 1: lsr.l #2,%d0 jne 1f jcs .Lcls_ret_struct1 | CIF_FLAGS_POINTER move.l (%a0),%a0 move.l %a0,%d0 jra .Lcls_epilogue .Lcls_ret_struct1: move.b (%a0),%d0 jra .Lcls_epilogue 1: lsr.l #2,%d0 jne 1f jcs .Lcls_ret_sint8 | CIF_FLAGS_STRUCT2 move.w (%a0),%d0 jra .Lcls_epilogue .Lcls_ret_sint8: move.l (%a0),%d0 | NOTE: On the mc68000, extb is not supported. 8->16, then 16->32. #if !defined(__mc68020__) && !defined(__mc68030__) && !defined(__mc68040__) && !defined(__mc68060__) && !defined(__mcoldfire__) ext.w %d0 ext.l %d0 #else extb.l %d0 #endif jra .Lcls_epilogue 1: | CIF_FLAGS_SINT16 move.l (%a0),%d0 ext.l %d0 jra .Lcls_epilogue CFI_ENDPROC() .size CALLFUNC(ffi_closure_SYSV),.-CALLFUNC(ffi_closure_SYSV) .globl CALLFUNC(ffi_closure_struct_SYSV) .type CALLFUNC(ffi_closure_struct_SYSV), @function .align 4 CALLFUNC(ffi_closure_struct_SYSV): CFI_STARTPROC() link %fp,#0 CFI_OFFSET(14,-8) CFI_DEF_CFA(14,8) move.l %sp,-12(%fp) pea 8(%fp) move.l %a1,-(%sp) move.l %a0,-(%sp) #if !defined __PIC__ jsr CALLFUNC(ffi_closure_SYSV_inner) #else bsr.l CALLFUNC(ffi_closure_SYSV_inner@PLTPC) #endif unlk %fp rts CFI_ENDPROC() .size CALLFUNC(ffi_closure_struct_SYSV),.-CALLFUNC(ffi_closure_struct_SYSV) #if defined __ELF__ && defined __linux__ .section .note.GNU-stack,"",@progbits #endif