diff options
Diffstat (limited to 'xpcom/reflect/xptcall/md/unix/xptcstubs_riscv64.cpp')
| -rw-r--r-- | xpcom/reflect/xptcall/md/unix/xptcstubs_riscv64.cpp | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/xpcom/reflect/xptcall/md/unix/xptcstubs_riscv64.cpp b/xpcom/reflect/xptcall/md/unix/xptcstubs_riscv64.cpp new file mode 100644 index 0000000000..b50fc23ffd --- /dev/null +++ b/xpcom/reflect/xptcall/md/unix/xptcstubs_riscv64.cpp @@ -0,0 +1,160 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#if defined(__riscv_float_abi_soft) +# error "Not support soft float ABI" +#endif + +#include "xptcprivate.h" + +extern "C" nsresult ATTRIBUTE_USED PrepareAndDispatch(nsXPTCStubBase* self, + uint32_t methodIndex, + uint64_t* args, + uint64_t* gpregs, + double* fpregs) { + static const uint32_t GPR_COUNT = 8; + static const uint32_t FPR_COUNT = 8; + nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT]; + const nsXPTMethodInfo* info; + + self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info); + + uint32_t paramCount = info->GetParamCount(); + const uint8_t indexOfJSContext = info->IndexOfJSContext(); + + uint64_t* ap = args; + uint32_t nr_gpr = 1; // skip one GPR register for 'self' + uint32_t nr_fpr = 0; + uint64_t value; + + for (uint32_t i = 0; i < paramCount; i++) { + const nsXPTParamInfo& param = info->GetParam(i); + const nsXPTType& type = param.GetType(); + nsXPTCMiniVariant* dp = ¶mBuffer[i]; + + if (i == indexOfJSContext) { + if (nr_gpr < GPR_COUNT) + nr_gpr++; + else + ap++; + } + + if (!param.IsOut() && type == nsXPTType::T_DOUBLE) { + if (nr_fpr < FPR_COUNT) { + dp->val.d = fpregs[nr_fpr++]; + } else { + dp->val.d = *(double*)ap++; + } + continue; + } + + if (!param.IsOut() && type == nsXPTType::T_FLOAT) { + if (nr_fpr < FPR_COUNT) { + dp->val.d = fpregs[nr_fpr++]; + } else { + dp->val.f = *(float*)ap++; + } + continue; + } + + if (nr_gpr < GPR_COUNT) { + value = gpregs[nr_gpr++]; + } else { + value = *ap++; + } + + if (param.IsOut() || !type.IsArithmetic()) { + dp->val.p = (void*)value; + continue; + } + + switch (type) { + case nsXPTType::T_I8: + dp->val.i8 = (int8_t)value; + break; + case nsXPTType::T_I16: + dp->val.i16 = (int16_t)value; + break; + case nsXPTType::T_I32: + dp->val.i32 = (int32_t)value; + break; + case nsXPTType::T_I64: + dp->val.i64 = (int64_t)value; + break; + case nsXPTType::T_U8: + dp->val.u8 = (uint8_t)value; + break; + case nsXPTType::T_U16: + dp->val.u16 = (uint16_t)value; + break; + case nsXPTType::T_U32: + dp->val.u32 = (uint32_t)value; + break; + case nsXPTType::T_U64: + dp->val.u64 = (uint64_t)value; + break; + case nsXPTType::T_BOOL: + dp->val.b = (bool)(uint8_t)value; + break; + case nsXPTType::T_CHAR: + dp->val.c = (char)value; + break; + case nsXPTType::T_WCHAR: + dp->val.wc = (wchar_t)value; + break; + default: + NS_ERROR("bad type"); + break; + } + } + + nsresult result = + self->mOuter->CallMethod((uint16_t)methodIndex, info, paramBuffer); + + return result; +} + +// Load t0 with the constant 'n' and branch to SharedStub(). +// clang-format off +#define STUB_ENTRY(n) \ + __asm__( \ + ".text\n\t" \ + ".if "#n" < 10 \n\t" \ + ".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \ + ".hidden _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \ + ".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \ + "_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \ + ".elseif "#n" < 100 \n\t" \ + ".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \ + ".hidden _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \ + ".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \ + "_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \ + ".elseif "#n" < 1000 \n\t" \ + ".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \ + ".hidden _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \ + ".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \ + "_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \ + ".else \n\t" \ + ".err \"stub number "#n" >= 1000 not yet supported\"\n" \ + ".endif \n\t" \ + "li t0, "#n" \n\t" \ + "j SharedStub \n" \ + ".if "#n" < 10\n\t" \ + ".size _ZN14nsXPTCStubBase5Stub"#n"Ev,.-_ZN14nsXPTCStubBase5Stub"#n"Ev\n\t" \ + ".elseif "#n" < 100\n\t" \ + ".size _ZN14nsXPTCStubBase6Stub"#n"Ev,.-_ZN14nsXPTCStubBase6Stub"#n"Ev\n\t" \ + ".else\n\t" \ + ".size _ZN14nsXPTCStubBase7Stub"#n"Ev,.-_ZN14nsXPTCStubBase7Stub"#n"Ev\n\t" \ + ".endif" \ +); +// clang-format on + +#define SENTINEL_ENTRY(n) \ + nsresult nsXPTCStubBase::Sentinel##n() { \ + NS_ERROR("nsXPTCStubBase::Sentinel called"); \ + return NS_ERROR_NOT_IMPLEMENTED; \ + } + +#include "xptcstubsdef.inc" |