4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync PE/Coff Extra Action library instances.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync are licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync which accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Check if the hardware breakpoint in Drx is enabled by checking the Lx and Gx bit in Dr7.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync It assumes that DebugAgent will set both Lx and Gx bit when setting up the hardware breakpoint.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param RegisterIndex Index of Dr register. The value range is from 0 to 3.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Dr7 Value of Dr7 register.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return TRUE The hardware breakpoint specified in the Drx is enabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @return FALSE The hardware breakpoint specified in the Drx is disabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return (BOOLEAN) (((Dr7 >> (RegisterIndex * 2)) & (BIT0 | BIT1)) == (BIT0 | BIT1));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Performs additional actions after a PE/COFF image has been loaded and relocated.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync If ImageContext is NULL, then ASSERT().
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param ImageContext Pointer to the image context structure that describes the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync PE/COFF image that has already been loaded and relocated.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync DEBUG((EFI_D_ERROR, " PDB = %a\n", ImageContext->PdbPointer));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Disable interrupts and save the current interrupt state
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Save Debug Register State
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR0 = IMAGE_LOAD_SIGNATURE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR1 = The address of the Null-terminated ASCII string for the PE/COFF image's PDB file name
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR2 = The pointer to the ImageContext structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR3 = IO_PORT_BREAKPOINT_ADDRESS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR7 = Disables all HW breakpoints except for DR3 I/O port access of length 1 byte
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // CR4 = Make sure DE(BIT3) is set
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync LoadImageMethod = PcdGet8 (PcdDebugLoadImageMethod);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_IO_HW_BREAKPOINT) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Do an IN from IO_PORT_BREAKPOINT_ADDRESS to generate a HW breakpoint until the port
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // returns a read value other than DEBUG_AGENT_IMAGE_WAIT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync DebugAgentStatus = IoRead8 (IO_PORT_BREAKPOINT_ADDRESS);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } while (DebugAgentStatus == DEBUG_AGENT_IMAGE_WAIT);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } else if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_SOFT_INT3) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Generate a software break point.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Restore Debug Register State only when Host didn't change it inside exception handler.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // E.g.: User halts the target and sets the HW breakpoint while target is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // in the above exception handler
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Restore the interrupt state
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Performs additional actions just before a PE/COFF image is unloaded. Any resources
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync that were allocated by PeCoffLoaderRelocateImageExtraAction() must be freed.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync If ImageContext is NULL, then ASSERT().
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param ImageContext Pointer to the image context structure that describes the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync PE/COFF image that is being unloaded.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync DEBUG((EFI_D_ERROR, " PDB = %a\n", ImageContext->PdbPointer));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Disable interrupts and save the current interrupt state
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Save Debug Register State
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR0 = IMAGE_UNLOAD_SIGNATURE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR1 = The address of the Null-terminated ASCII string for the PE/COFF image's PDB file name
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR2 = The pointer to the ImageContext structure
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR3 = IO_PORT_BREAKPOINT_ADDRESS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // DR7 = Disables all HW breakpoints except for DR3 I/O port access of length 1 byte
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // CR4 = Make sure DE(BIT3) is set
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync LoadImageMethod = PcdGet8 (PcdDebugLoadImageMethod);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_IO_HW_BREAKPOINT) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Do an IN from IO_PORT_BREAKPOINT_ADDRESS to generate a HW breakpoint until the port
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // returns a read value other than DEBUG_AGENT_IMAGE_WAIT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync DebugAgentStatus = IoRead8 (IO_PORT_BREAKPOINT_ADDRESS);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } while (DebugAgentStatus == DEBUG_AGENT_IMAGE_WAIT);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync } else if (LoadImageMethod == DEBUG_LOAD_IMAGE_METHOD_SOFT_INT3) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Generate a software break point.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Restore Debug Register State only when Host didn't change it inside exception handler.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // E.g.: User halts the target and sets the HW breakpoint while target is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // in the above exception handler
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Restore the interrupt state