qemu/contrib/elf2dmp/qemu_elf.h
Viktor Prutyanov df7a75564e elf2dmp: use Linux mmap with MAP_NORESERVE when possible
Glib's g_mapped_file_new maps file with PROT_READ|PROT_WRITE and
MAP_PRIVATE. This leads to premature physical memory allocation of dump
file size on Linux hosts and may fail. On Linux, mapping the file with
MAP_NORESERVE limits the allocation by available memory.

Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230915170153.10959-5-viktor@daynix.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-09-21 16:13:54 +01:00

52 lines
1.1 KiB
C

/*
* Copyright (c) 2018 Virtuozzo International GmbH
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
*/
#ifndef ELF2DMP_QEMU_ELF_H
#define ELF2DMP_QEMU_ELF_H
#include "elf.h"
typedef struct QEMUCPUSegment {
uint32_t selector;
uint32_t limit;
uint32_t flags;
uint32_t pad;
uint64_t base;
} QEMUCPUSegment;
typedef struct QEMUCPUState {
uint32_t version;
uint32_t size;
uint64_t rax, rbx, rcx, rdx, rsi, rdi, rsp, rbp;
uint64_t r8, r9, r10, r11, r12, r13, r14, r15;
uint64_t rip, rflags;
QEMUCPUSegment cs, ds, es, fs, gs, ss;
QEMUCPUSegment ldt, tr, gdt, idt;
uint64_t cr[5];
uint64_t kernel_gs_base;
} QEMUCPUState;
int is_system(QEMUCPUState *s);
typedef struct QEMU_Elf {
#ifndef CONFIG_LINUX
GMappedFile *gmf;
#endif
size_t size;
void *map;
QEMUCPUState **state;
size_t state_nr;
int has_kernel_gs_base;
} QEMU_Elf;
int QEMU_Elf_init(QEMU_Elf *qe, const char *filename);
void QEMU_Elf_exit(QEMU_Elf *qe);
Elf64_Phdr *elf64_getphdr(void *map);
Elf64_Half elf_getphdrnum(void *map);
#endif /* ELF2DMP_QEMU_ELF_H */