https://bugzilla.tianocore.org/show_bug.cgi?id=565
Fix NASM compatibility issues with XCODE5 tool chain. The XCODE5 tool chain for X64 builds using PIE (Position Independent Executable). For most assembly sources using PIE mode does not cause any issues. However, if assembly code is copied to a different address (such as AP startup code in the MpInitLib), then the X64 assembly source must be implemented to be compatible with PIE mode that uses RIP relative addressing. The specific changes in this patch are: * Use LEA instruction instead of MOV instruction to lookup the addresses of functions. * The assembly function RendezvousFunnelProc() is copied below 1MB so it can be executed as part of the MpInitLib AP startup sequence. RendezvousFunnelProc() calls the external function InitializeFloatingPointUnits(). The absolute address of InitializeFloatingPointUnits() is added to the MP_CPU_EXCHANGE_INFO structure that is passed to RendezvousFunnelProc(). Cc: Andrew Fish <[email protected]> Cc: Jeff Fan <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael D Kinney <[email protected]> --- UefiCpuPkg/Library/MpInitLib/MpLib.c | 2 ++ UefiCpuPkg/Library/MpInitLib/MpLib.h | 1 + UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc | 1 + UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm | 8 ++++---- 4 files changed, 8 insertions(+), 4 deletions(-) diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index 407c44c..735e099 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -751,6 +751,8 @@ FillExchangeInfoData ( ExchangeInfo->EnableExecuteDisable = IsBspExecuteDisableEnabled (); + ExchangeInfo->InitializeFloatingPointUnitsAddress = (UINTN)InitializeFloatingPointUnits; + // // Get the BSP's data of GDT and IDT // diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.h b/UefiCpuPkg/Library/MpInitLib/MpLib.h index 989b3f8..ea56412 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.h +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.h @@ -177,6 +177,7 @@ typedef struct { UINTN InitFlag; CPU_INFO_IN_HOB *CpuInfo; CPU_MP_DATA *CpuMpData; + UINTN InitializeFloatingPointUnitsAddress; } MP_CPU_EXCHANGE_INFO; #pragma pack() diff --git a/UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc b/UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc index a63cd23..852281a 100644 --- a/UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc +++ b/UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc @@ -40,4 +40,5 @@ EnableExecuteDisableLocation equ LockLocation + 5Ch Cr3Location equ LockLocation + 64h InitFlagLocation equ LockLocation + 6Ch CpuInfoLocation equ LockLocation + 74h +InitializeFloatingPointUnitsAddress equ LockLocation + 84h diff --git a/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm b/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm index fa54d01..0b14a53 100644 --- a/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm +++ b/UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm @@ -1,5 +1,5 @@ ;------------------------------------------------------------------------------ ; -; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR> +; Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR> ; This program and the accompanying materials ; are licensed and made available under the terms and conditions of the BSD License ; which accompanies this distribution. The full text of the license may be found at @@ -201,7 +201,7 @@ CProcedureInvoke: push rbp mov rbp, rsp - mov rax, ASM_PFX(InitializeFloatingPointUnits) + mov rax, qword [esi + InitializeFloatingPointUnitsAddress] sub rsp, 20h call rax ; Call assembly function to initialize FPU per UEFI spec add rsp, 20h @@ -282,11 +282,11 @@ AsmRelocateApLoopEnd: ;------------------------------------------------------------------------------------- global ASM_PFX(AsmGetAddressMap) ASM_PFX(AsmGetAddressMap): - mov rax, ASM_PFX(RendezvousFunnelProc) + lea rax, [ASM_PFX(RendezvousFunnelProc)] mov qword [rcx], rax mov qword [rcx + 8h], LongModeStart - RendezvousFunnelProcStart mov qword [rcx + 10h], RendezvousFunnelProcEnd - RendezvousFunnelProcStart - mov rax, ASM_PFX(AsmRelocateApLoop) + lea rax, [ASM_PFX(AsmRelocateApLoop)] mov qword [rcx + 18h], rax mov qword [rcx + 20h], AsmRelocateApLoopEnd - AsmRelocateApLoopStart ret -- 2.6.3.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
