| /* ----------------------------------------------------------------------- |
| arcompact.S - Copyright (c) 2013 Synposys, Inc. (www.synopsys.com) |
| |
| ARCompact 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 RENESAS TECHNOLOGY 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> |
| #ifdef HAVE_MACHINE_ASM_H |
| #include <machine/asm.h> |
| #else |
| #define CNAME(x) x |
| #define ENTRY(x) .globl CNAME(x)` .type CNAME(x),%function` CNAME(x): |
| #endif |
| |
| #if __SIZEOF_POINTER__ == 8 |
| #define PTRS 8 |
| #define FLTS 8 |
| #define LARG ldl |
| #define SARG stl |
| #define ADDPTR addl |
| #define MOVPTR movl_s |
| #else |
| #define PTRS 4 |
| #define FLTS 4 |
| #define LARG ld |
| #define SARG st |
| #define ADDPTR add |
| #define MOVPTR mov_s |
| #endif |
| |
| #define FRAME_LEN (8 * PTRS + 16) |
| |
| .text |
| |
| ENTRY(ffi_call_asm) |
| .cfi_startproc |
| |
| /* Save registers. */ |
| .cfi_def_cfa r1, FRAME_LEN |
| SARG fp, [r1, FRAME_LEN - 2*PTRS] |
| .cfi_offset fp, -2*PTRS |
| SARG blink, [r1, FRAME_LEN - 1*PTRS] |
| .cfi_offset blink, -1*PTRS |
| ADDPTR fp, r1, FRAME_LEN |
| MOVPTR sp, r0 |
| .cfi_def_cfa fp, 0 |
| |
| /* Load arguments. */ |
| MOVPTR r11, r2 /* fn */ |
| MOVPTR r12, r3 /* closure */ |
| |
| /* Save arguments. */ |
| LARG r0, [fp, -FRAME_LEN+0*PTRS] |
| LARG r1, [fp, -FRAME_LEN+1*PTRS] |
| LARG r2, [fp, -FRAME_LEN+2*PTRS] |
| LARG r3, [fp, -FRAME_LEN+3*PTRS] |
| LARG r4, [fp, -FRAME_LEN+4*PTRS] |
| LARG r5, [fp, -FRAME_LEN+5*PTRS] |
| LARG r6, [fp, -FRAME_LEN+6*PTRS] |
| LARG r7, [fp, -FRAME_LEN+7*PTRS] |
| |
| /* Call the function. */ |
| jl [r11] |
| |
| /* Save return value (r0/r1) */ |
| SARG r0, [fp, -FRAME_LEN+0*PTRS] |
| SARG r1, [fp, -FRAME_LEN+1*PTRS] |
| |
| /* Restore and return. */ |
| add sp, fp, -FRAME_LEN |
| .cfi_def_cfa sp, FRAME_LEN |
| LARG blink, [fp, -1*PTRS] |
| .cfi_restore blink |
| LARG fp, [fp, -2*PTRS] |
| .cfi_restore fp |
| j_s [blink] |
| .cfi_endproc |
| .size ffi_call_asm, .-ffi_call_asm |
| |
| /* |
| ffi_closure_asm. Expects address of the passed-in ffi_closure in r8. |
| void ffi_closure_inner (ffi_cif *cif, |
| void (*fun) (ffi_cif *, void *, void **, void *), |
| void *user_data, |
| size_t *stackargs, struct call_context *regargs) |
| */ |
| |
| ENTRY(ffi_closure_asm) |
| .cfi_startproc |
| |
| ADDPTR sp, sp, -FRAME_LEN |
| .cfi_def_cfa_offset FRAME_LEN |
| |
| /* Make a frame. */ |
| SARG fp, [sp, FRAME_LEN-2*PTRS] |
| .cfi_offset fp, -2*PTRS |
| SARG blink, [sp, FRAME_LEN-1*PTRS] |
| .cfi_offset blink, -1*PTRS |
| ADDPTR fp, sp, FRAME_LEN |
| |
| /* Save arguments. */ |
| SARG r0, [sp, 0*PTRS] |
| SARG r1, [sp, 1*PTRS] |
| SARG r2, [sp, 2*PTRS] |
| SARG r3, [sp, 3*PTRS] |
| SARG r4, [sp, 4*PTRS] |
| SARG r5, [sp, 5*PTRS] |
| SARG r6, [sp, 6*PTRS] |
| SARG r7, [sp, 7*PTRS] |
| |
| /* Enter C. */ |
| LARG r0, [r8, FFI_TRAMPOLINE_SIZE+0*PTRS] |
| LARG r1, [r8, FFI_TRAMPOLINE_SIZE+1*PTRS] |
| LARG r2, [r8, FFI_TRAMPOLINE_SIZE+2*PTRS] |
| ADDPTR r3, sp, FRAME_LEN |
| MOVPTR r4, sp |
| |
| /* Call the C code. */ |
| bl ffi_closure_inner |
| |
| /* Return values. */ |
| LARG r0, [sp, 0*PTRS] |
| LARG r1, [sp, 1*PTRS] |
| |
| /* Restore and return. */ |
| LARG blink, [sp, FRAME_LEN-1*PTRS] |
| .cfi_restore blink |
| LARG fp, [sp, FRAME_LEN-2*PTRS] |
| .cfi_restore fp |
| ADDPTR sp, sp, FRAME_LEN |
| .cfi_def_cfa_offset 0 |
| j_s [blink] |
| .cfi_endproc |
| .size ffi_closure_asm, .-ffi_closure_asm |
| |
| /* |
| ffi_go_closure_asm. Expects address of the passed-in ffi_go_closure in r12. |
| void ffi_closure_inner (ffi_cif *cif, |
| void (*fun) (ffi_cif *, void *, void **, void *), |
| void *user_data, |
| size_t *stackargs, struct call_context *regargs) |
| */ |
| |
| ENTRY(ffi_go_closure_asm) |
| .cfi_startproc |
| |
| ADDPTR sp, sp, -FRAME_LEN |
| .cfi_def_cfa_offset FRAME_LEN |
| |
| /* make a frame */ |
| SARG fp, [sp, FRAME_LEN-2*PTRS] |
| .cfi_offset fp, -2*PTRS |
| SARG blink, [sp, FRAME_LEN-1*PTRS] |
| .cfi_offset blink, -1*PTRS |
| ADDPTR fp, sp, FRAME_LEN |
| |
| /* save arguments */ |
| SARG r0, [sp, 0*PTRS] |
| SARG r1, [sp, 1*PTRS] |
| SARG r2, [sp, 2*PTRS] |
| SARG r3, [sp, 3*PTRS] |
| SARG r4, [sp, 4*PTRS] |
| SARG r5, [sp, 5*PTRS] |
| SARG r6, [sp, 6*PTRS] |
| SARG r7, [sp, 7*PTRS] |
| |
| /* enter C */ |
| LARG r0, [r12, 1*PTRS] |
| LARG r1, [r12, 2*PTRS] |
| MOVPTR r2, r12 |
| ADDPTR r3, sp, FRAME_LEN |
| MOVPTR r4, sp |
| |
| bl ffi_closure_inner |
| |
| /* Return values. */ |
| LARG r0, [sp, 0*PTRS] |
| LARG r1, [sp, 1*PTRS] |
| |
| |
| LARG blink, [sp, FRAME_LEN-1*PTRS] |
| .cfi_restore blink |
| LARG fp, [sp, FRAME_LEN-2*PTRS] |
| .cfi_restore fp |
| ADDPTR sp, sp, FRAME_LEN |
| .cfi_def_cfa_offset 0 |
| j_s [blink] |
| .cfi_endproc |
| .size ffi_go_closure_asm, .-ffi_go_closure_asm |
