Edit
kc3-lang/libffi/src/frv/eabi.S
Anthony Green
- src/frv/eabi.S
-
/* ----------------------------------------------------------------------- eabi.S - Copyright (c) 2004 Anthony Green FR-V 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. ----------------------------------------------------------------------- */ #define LIBFFI_ASM #include <fficonfig.h> #include <ffi.h> .globl ffi_prep_args_EABI .text .p2align 4 .globl ffi_call_EABI .type ffi_call_EABI, @function # gr8 : ffi_prep_args # gr9 : &ecif # gr10: cif->bytes # gr11: fig->flags # gr12: ecif.rvalue # gr13: fn ffi_call_EABI: addi sp, #-80, sp sti fp, @(sp, #24) addi sp, #24, fp movsg lr, gr5 /* Make room for the new arguments. */ /* subi sp, fp, gr10 */ /* Store return address and incoming args on stack. */ sti gr5, @(fp, #8) sti gr8, @(fp, #-4) sti gr9, @(fp, #-8) sti gr10, @(fp, #-12) sti gr11, @(fp, #-16) sti gr12, @(fp, #-20) sti gr13, @(fp, #-24) sub sp, gr10, sp /* Call ffi_prep_args. */ ldi @(fp, #-4), gr4 addi sp, #0, gr8 ldi @(fp, #-8), gr9 #ifdef __FRV_FDPIC__ ldd @(gr4, gr0), gr14 calll @(gr14, gr0) #else calll @(gr4, gr0) #endif /* ffi_prep_args returns the new stack pointer. */ mov gr8, gr4 ldi @(sp, #0), gr8 ldi @(sp, #4), gr9 ldi @(sp, #8), gr10 ldi @(sp, #12), gr11 ldi @(sp, #16), gr12 ldi @(sp, #20), gr13 /* Always copy the return value pointer into the hidden parameter register. This is only strictly necessary when we're returning an aggregate type, but it doesn't hurt to do this all the time, and it saves a branch. */ ldi @(fp, #-20), gr3 /* Use the ffi_prep_args return value for the new sp. */ mov gr4, sp /* Call the target function. */ ldi @(fp, -24), gr4 #ifdef __FRV_FDPIC__ ldd @(gr4, gr0), gr14 calll @(gr14, gr0) #else calll @(gr4, gr0) #endif /* Store the result. */ ldi @(fp, #-16), gr10 /* fig->flags */ ldi @(fp, #-20), gr4 /* ecif.rvalue */ /* Is the return value stored in two registers? */ cmpi gr10, #8, icc0 bne icc0, 0, .L2 /* Yes, save them. */ sti gr8, @(gr4, #0) sti gr9, @(gr4, #4) bra .L3 .L2: /* Is the return value a structure? */ cmpi gr10, #-1, icc0 beq icc0, 0, .L3 /* No, save a 4 byte return value. */ sti gr8, @(gr4, #0) .L3: /* Restore the stack, and return. */ ldi @(fp, 8), gr5 ld @(fp, gr0), fp addi sp,#80,sp jmpl @(gr5,gr0) .size ffi_call_EABI, .-ffi_call_EABI