| // Copyright 2012 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| //go:build ppc64 || ppc64le |
| |
| #include "textflag.h" |
| #include "funcdata.h" |
| #include "asm_ppc64x.h" |
| |
| // The frames of each of the two functions below contain two locals, at offsets |
| // that are known to the runtime. |
| // |
| // The first local is a bool called retValid with a whole pointer-word reserved |
| // for it on the stack. The purpose of this word is so that the runtime knows |
| // whether the stack-allocated return space contains valid values for stack |
| // scanning. |
| // |
| // The second local is an abi.RegArgs value whose offset is also known to the |
| // runtime, so that a stack map for it can be constructed, since it contains |
| // pointers visible to the GC. |
| |
| #define LOCAL_RETVALID 32+FIXED_FRAME |
| #define LOCAL_REGARGS 40+FIXED_FRAME |
| |
| // The frame size of the functions below is |
| // 32 (args of callReflect) + 8 (bool + padding) + 296 (abi.RegArgs) = 336. |
| |
| // makeFuncStub is the code half of the function returned by MakeFunc. |
| // See the comment on the declaration of makeFuncStub in makefunc.go |
| // for more details. |
| // No arg size here, runtime pulls arg map out of the func value. |
| TEXT ·makeFuncStub(SB),(NOSPLIT|WRAPPER),$336 |
| NO_LOCAL_POINTERS |
| // NO_LOCAL_POINTERS is a lie. The stack map for the two locals in this |
| // frame is specially handled in the runtime. See the comment above LOCAL_RETVALID. |
| ADD $LOCAL_REGARGS, R1, R20 |
| CALL runtime·spillArgs(SB) |
| MOVD R11, FIXED_FRAME+32(R1) // save R11 |
| MOVD R11, FIXED_FRAME+0(R1) // arg for moveMakeFuncArgPtrs |
| MOVD R20, FIXED_FRAME+8(R1) // arg for local args |
| CALL ·moveMakeFuncArgPtrs(SB) |
| MOVD FIXED_FRAME+32(R1), R11 // restore R11 ctxt |
| MOVD R11, FIXED_FRAME+0(R1) // ctxt (arg0) |
| MOVD $argframe+0(FP), R3 // save arg to callArg |
| MOVD R3, FIXED_FRAME+8(R1) // frame (arg1) |
| ADD $LOCAL_RETVALID, R1, R3 // addr of return flag |
| MOVB R0, (R3) // clear flag |
| MOVD R3, FIXED_FRAME+16(R1) // addr retvalid (arg2) |
| ADD $LOCAL_REGARGS, R1, R3 |
| MOVD R3, FIXED_FRAME+24(R1) // abiregargs (arg3) |
| BL ·callReflect(SB) |
| ADD $LOCAL_REGARGS, R1, R20 // set address of spill area |
| CALL runtime·unspillArgs(SB) |
| RET |
| |
| // methodValueCall is the code half of the function returned by makeMethodValue. |
| // See the comment on the declaration of methodValueCall in makefunc.go |
| // for more details. |
| // No arg size here; runtime pulls arg map out of the func value. |
| TEXT ·methodValueCall(SB),(NOSPLIT|WRAPPER),$336 |
| NO_LOCAL_POINTERS |
| // NO_LOCAL_POINTERS is a lie. The stack map for the two locals in this |
| // frame is specially handled in the runtime. See the comment above LOCAL_RETVALID. |
| ADD $LOCAL_REGARGS, R1, R20 |
| CALL runtime·spillArgs(SB) |
| MOVD R11, FIXED_FRAME+0(R1) // arg0 ctxt |
| MOVD R11, FIXED_FRAME+32(R1) // save for later |
| MOVD R20, FIXED_FRAME+8(R1) // arg1 abiregargs |
| CALL ·moveMakeFuncArgPtrs(SB) |
| MOVD FIXED_FRAME+32(R1), R11 // restore ctxt |
| MOVD R11, FIXED_FRAME+0(R1) // set as arg0 |
| MOVD $argframe+0(FP), R3 // frame pointer |
| MOVD R3, FIXED_FRAME+8(R1) // set as arg1 |
| ADD $LOCAL_RETVALID, R1, R3 |
| MOVB $0, (R3) // clear ret flag |
| MOVD R3, FIXED_FRAME+16(R1) // addr of return flag |
| ADD $LOCAL_REGARGS, R1, R3 // addr of abiregargs |
| MOVD R3, FIXED_FRAME+24(R1) // set as arg3 |
| BL ·callMethod(SB) |
| ADD $LOCAL_REGARGS, R1, R20 |
| CALL runtime·unspillArgs(SB) |
| RET |
