/* ----------------------------------------------------------------------- v8.S - Copyright (c) 2013 The Written Word, Inc. Copyright (c) 1996, 1997, 2003, 2004, 2008 Red Hat, Inc. SPARC 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 #include #include "internal.h" #ifndef SPARC64 #define C2(X, Y) X ## Y #define C1(X, Y) C2(X, Y) #ifdef __USER_LABEL_PREFIX__ # define C(Y) C1(__USER_LABEL_PREFIX__, Y) #else # define C(Y) Y #endif #define L(Y) C1(.L, Y) .text #ifndef __GNUC__ .align 8 .globl C(ffi_flush_icache) .type C(ffi_flush_icache),#function FFI_HIDDEN(C(ffi_flush_icache)) C(ffi_flush_icache): cfi_startproc 1: iflush %o0 iflush %o+8 nop nop nop nop nop retl nop cfi_endproc .size C(ffi_flush_icache), . - C(ffi_flush_icache) #endif #if defined(__sun__) && defined(__svr4__) # define E(INDEX) .align 16 #else # define E(INDEX) .align 16; .org 2b + INDEX * 16 #endif .align 8 .globl C(ffi_call_v8) .type C(ffi_call_v8),#function FFI_HIDDEN(C(ffi_call_v8)) C(ffi_call_v8): cfi_startproc ! Allocate a stack frame sized by ffi_call. save %sp, %o4, %sp cfi_def_cfa_register(%fp) cfi_window_save cfi_register(%o7, %i7) mov %i0, %o0 ! copy cif add %sp, 64+32, %o1 ! load args area mov %i2, %o2 ! copy rvalue call C(ffi_prep_args_v8) mov %i3, %o3 ! copy avalue add %sp, 32, %sp ! deallocate prep frame and %o0, SPARC_FLAG_RET_MASK, %l0 ! save return type srl %o0, SPARC_SIZEMASK_SHIFT, %l1 ! save return size ld [%sp+64+4], %o0 ! load all argument registers ld [%sp+64+8], %o1 ld [%sp+64+12], %o2 ld [%sp+64+16], %o3 cmp %l0, SPARC_RET_STRUCT ! struct return needs an unimp 4 ld [%sp+64+20], %o4 be 8f ld [%sp+64+24], %o5 ! Call foreign function call %i1 mov %i5, %g2 ! load static chain 0: call 1f ! load pc in %o7 sll %l0, 4, %l0 1: add %o7, %l0, %o7 ! o7 = 0b + ret_type*16 jmp %o7+(2f-0b) nop ! Note that each entry is 4 insns, enforced by the E macro. .align 16 2: E(SPARC_RET_VOID) ret restore E(SPARC_RET_STRUCT) unimp E(SPARC_RET_UINT8) and %o0, 0xff, %o0 st %o0, [%i2] ret restore E(SPARC_RET_SINT8) sll %o0, 24, %o0 b 7f sra %o0, 24, %o0 E(SPARC_RET_UINT16) sll %o0, 16, %o0 b 7f srl %o0, 16, %o0 E(SPARC_RET_SINT16) sll %o0, 16, %o0 b 7f sra %o0, 16, %o0 E(SPARC_RET_UINT32) 7: st %o0, [%i2] ret restore E(SP_V8_RET_CPLX16) sth %o0, [%i2+2] b 9f srl %o0, 16, %o0 E(SPARC_RET_INT64) st %o0, [%i2] st %o1, [%i2+4] ret restore E(SPARC_RET_INT128) std %o0, [%i2] std %o2, [%i2+8] ret restore E(SPARC_RET_F_8) st %f7, [%i2+7*4] nop st %f6, [%i2+6*4] nop E(SPARC_RET_F_6) st %f5, [%i2+5*4] nop st %f4, [%i2+4*4] nop E(SPARC_RET_F_4) st %f3, [%i2+3*4] nop st %f2, [%i2+2*4] nop E(SPARC_RET_F_2) st %f1, [%i2+4] st %f0, [%i2] ret restore E(SP_V8_RET_CPLX8) stb %o0, [%i2+1] b 0f srl %o0, 8, %o0 E(SPARC_RET_F_1) st %f0, [%i2] ret restore .align 8 9: sth %o0, [%i2] ret restore .align 8 0: stb %o0, [%i2] ret restore ! Struct returning functions expect and skip the unimp here. ! To make it worse, conforming callees examine the unimp and ! make sure the low 12 bits of the unimp match the size of ! the struct being returned. .align 8 8: call 1f ! load pc in %o7 sll %l1, 2, %l0 ! size * 4 1: sll %l1, 4, %l1 ! size * 16 add %l0, %l1, %l0 ! size * 20 add %o7, %l0, %o7 ! o7 = 8b + size*20 jmp %o7+(2f-8b) mov %i5, %g2 ! load static chain 2: /* The Sun assembler doesn't understand .rept 0x1000. */ #define rept1 \ call %i1; \ nop; \ unimp (. - 2b) / 20; \ ret; \ restore #define rept16 \ rept1; rept1; rept1; rept1; \ rept1; rept1; rept1; rept1; \ rept1; rept1; rept1; rept1; \ rept1; rept1; rept1; rept1 #define rept256 \ rept16; rept16; rept16; rept16; \ rept16; rept16; rept16; rept16; \ rept16; rept16; rept16; rept16; \ rept16; rept16; rept16; rept16 rept256; rept256; rept256; rept256 rept256; rept256; rept256; rept256 rept256; rept256; rept256; rept256 rept256; rept256; rept256; rept256 cfi_endproc .size C(ffi_call_v8),. - C(ffi_call_v8) /* 16*4 register window + 1*4 struct return + 6*4 args backing store + 8*4 return storage + 1*4 alignment. */ #define STACKFRAME (16*4 + 4 + 6*4 + 8*4 + 4) /* ffi_closure_v8(...) Receives the closure argument in %g2. */ #ifdef HAVE_AS_REGISTER_PSEUDO_OP .register %g2, #scratch #endif .align 8 .globl C(ffi_go_closure_v8) .type C(ffi_go_closure_v8),#function FFI_HIDDEN(C(ffi_go_closure_v8)) C(ffi_go_closure_v8): cfi_startproc save %sp, -STACKFRAME, %sp cfi_def_cfa_register(%fp) cfi_window_save cfi_register(%o7, %i7) ld [%g2+4], %o0 ! load cif ld [%g2+8], %o1 ! load fun b 0f mov %g2, %o2 ! load user_data cfi_endproc .size C(ffi_go_closure_v8), . - C(ffi_go_closure_v8) .align 8 .globl C(ffi_closure_v8) .type C(ffi_closure_v8),#function FFI_HIDDEN(C(ffi_closure_v8)) C(ffi_closure_v8): cfi_startproc save %sp, -STACKFRAME, %sp cfi_def_cfa_register(%fp) cfi_window_save cfi_register(%o7, %i7) ld [%g2+FFI_TRAMPOLINE_SIZE], %o0 ! load cif ld [%g2+FFI_TRAMPOLINE_SIZE+4], %o1 ! load fun ld [%g2+FFI_TRAMPOLINE_SIZE+8], %o2 ! load user_data 0: ! Store all of the potential argument registers in va_list format. st %i0, [%fp+68+0] st %i1, [%fp+68+4] st %i2, [%fp+68+8] st %i3, [%fp+68+12] st %i4, [%fp+68+16] st %i5, [%fp+68+20] ! Call ffi_closure_sparc_inner to do the bulk of the work. add %fp, -8*4, %o3 call ffi_closure_sparc_inner_v8 add %fp, 64, %o4 0: call 1f and %o0, SPARC_FLAG_RET_MASK, %o0 1: sll %o0, 4, %o0 ! o0 = o0 * 16 add %o7, %o0, %o7 ! o7 = 0b + o0*16 jmp %o7+(2f-0b) add %fp, -8*4, %i2 ! Note that each entry is 4 insns, enforced by the E macro. .align 16 2: E(SPARC_RET_VOID) ret restore E(SPARC_RET_STRUCT) ld [%i2], %i0 jmp %i7+12 restore E(SPARC_RET_UINT8) ldub [%i2+3], %i0 ret restore E(SPARC_RET_SINT8) ldsb [%i2+3], %i0 ret restore E(SPARC_RET_UINT16) lduh [%i2+2], %i0 ret restore E(SPARC_RET_SINT16) ldsh [%i2+2], %i0 ret restore E(SPARC_RET_UINT32) ld [%i2], %i0 ret restore E(SP_V8_RET_CPLX16) ld [%i2], %i0 ret restore E(SPARC_RET_INT64) ldd [%i2], %i0 ret restore E(SPARC_RET_INT128) ldd [%i2], %i0 ldd [%i2+8], %i2 ret restore E(SPARC_RET_F_8) ld [%i2+7*4], %f7 nop ld [%i2+6*4], %f6 nop E(SPARC_RET_F_6) ld [%i2+5*4], %f5 nop ld [%i2+4*4], %f4 nop E(SPARC_RET_F_4) ld [%i2+3*4], %f3 nop ld [%i2+2*4], %f2 nop E(SPARC_RET_F_2) ldd [%i2], %f0 ret restore E(SP_V8_RET_CPLX8) lduh [%i2], %i0 ret restore E(SPARC_RET_F_1) ld [%i2], %f0 ret restore cfi_endproc .size C(ffi_closure_v8), . - C(ffi_closure_v8) #endif /* !SPARC64 */ #if defined __ELF__ && defined __linux__ .section .note.GNU-stack,"",@progbits #endif