Mercurial > pub > dyncall > dyncall
view dyncallback/dyncall_callback_ppc64.S @ 161:b8c23c9232c7
- marked linux sparc as fully supported, as callback support is in and tests all confirmed working
author | cslag |
---|---|
date | Thu, 29 Dec 2016 10:55:56 -0600 |
parents | 7ca57dbefed4 |
children | 891e8ba15862 |
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/* Package: dyncall Library: dyncallback File: dyncallback/dyncall_callback_ppc64.S Description: Callback Thunk - Implementation for PowerPC 64-bit License: Copyright (c) 2014-2015 Masanori Mitsugi <mitsugi@linux.vnet.ibm.com> Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "../portasm/portasm-ppc64.S" .text .align 2 /* struct DCCallback */ #if DC__ABI_PPC64_ELF_V != 2 DCB_THUNK = 0 /* v1 */ DCB_HANDLER = 64 DCB_STACKCLEAN = 72 DCB_USERDATA = 80 #else DCB_THUNK = 0 /* v2 */ DCB_HANDLER = 48 DCB_STACKCLEAN = 56 DCB_USERDATA = 64 #endif /* struct DCArgs */ ARGS_IREGS = 0 ARGS_FREGS = ARGS_IREGS + 8*8 ARGS_SP = ARGS_FREGS + 8*13 ARGS_ICNT = ARGS_SP + 8 ARGS_FCNT = ARGS_ICNT + 4 ARGS_SIZE = ARGS_FCNT + 4 /* struct DCValue */ RESULT_SIZE = 8 /* Stack Offsets */ SP_PREV = 0 SP_CR = SP_PREV + 8 SP_LR = SP_CR + 8 #if DC__ABI_PPC64_ELF_V != 2 SP_TOC = 40 SP_PAR = 48 PAR_SZ = 64 #else SP_TOC = 24 SP_PAR = 32 PAR_SZ = 0 #endif SP_ARGS = SP_PAR + PAR_SZ SP_IREGS = SP_ARGS + ARGS_IREGS SP_FREGS = SP_ARGS + ARGS_FREGS SP_SP = SP_ARGS + ARGS_SP SP_ICNT = SP_ARGS + ARGS_ICNT SP_FCNT = SP_ARGS + ARGS_FCNT SP_RESULT = SP_ARGS + ARGS_SIZE SP_LOCAL = SP_RESULT + RESULT_SIZE /* additional locals (reg 30/31) */ SP_SIZE = SP_LOCAL + 2*8 #define ALIGN(M,X) ( M+(X-1) & (-X) ) FRAMESIZE = ALIGN(SP_SIZE,16) GLOBAL_C(dcCallbackThunkEntry) ENTRY_C(dcCallbackThunkEntry) /* -------------------------------------------------------------------------- Input: r1 Stack Pointer r3-r10 Integer Arguments f1-f8 Floating-point Arguments r11 Thunk Pointer */ mflr r0 std r0, SP_LR(r1) /* store return address */ std r31, -8(r1) /* store preserved registers (r31) */ addi r12, r1, SP_PAR /* temporary r12 = parameter area on callers stack frame */ stdu r1, -FRAMESIZE(r1) /* save callers stack pointer and make new stack frame. */ std r3, SP_IREGS + 0*8(r1) /* spill 8 integer parameter registers */ std r4, SP_IREGS + 1*8(r1) std r5, SP_IREGS + 2*8(r1) std r6, SP_IREGS + 3*8(r1) std r7, SP_IREGS + 4*8(r1) std r8, SP_IREGS + 5*8(r1) std r9, SP_IREGS + 6*8(r1) std r10,SP_IREGS + 7*8(r1) stfd f1, SP_FREGS + 0*8(r1) /* spill 13 float parameter registers */ stfd f2, SP_FREGS + 1*8(r1) stfd f3, SP_FREGS + 2*8(r1) stfd f4, SP_FREGS + 3*8(r1) stfd f5, SP_FREGS + 4*8(r1) stfd f6, SP_FREGS + 5*8(r1) stfd f7, SP_FREGS + 6*8(r1) stfd f8, SP_FREGS + 7*8(r1) stfd f9, SP_FREGS + 8*8(r1) stfd f10,SP_FREGS + 9*8(r1) stfd f11,SP_FREGS +10*8(r1) stfd f12,SP_FREGS +11*8(r1) stfd f13,SP_FREGS +12*8(r1) /* initialize struct DCCallback */ std r12,SP_SP(r1) /* init stack pointer */ xor r0, r0, r0 /* init register counters */ std r0, SP_ICNT(r1) std r0, SP_FCNT(r1) std r0, SP_RESULT(r1) /* init result object */ /* invoke callback handler */ mr r3, r11 /* arg 1: DCCallback* pcb (r11 is thunk pointer) */ addi r4, r1, SP_ARGS /* arg 2: DCArgs* args */ addi r5, r1, SP_RESULT /* arg 3: DCValue* result */ ld r6, DCB_USERDATA(r11) /* arg 4: void* userdata */ /* branch-and-link to DCCallback.handler */ ld r12, DCB_HANDLER(r11) std r2, SP_TOC(r1) #if DC__ABI_PPC64_ELF_V != 2 ld r2, 8(r12) ld r0, 0(r12) mtctr r0 #else mtctr r12 #endif bctrl /* check result type */ cmpi cr0, r3, 'f beq .f32 cmpi cr0, r3, 'd beq .f64 .i64: ld r3, SP_RESULT(r1) b .end .end: ld r2, SP_TOC(r1) ld r1, SP_PREV(r1) /* restore stack pointer */ ld r31, -8(r1) /* restore preserved registers */ ld r0, SP_LR(r1) /* load link register with return address */ mtlr r0 blr /* branch back to link register */ .f32: lfs f1, SP_RESULT(r1) b .end .f64: lfd f1, SP_RESULT(r1) b .end