xref: /external/libunwind/src/x86/offsets.h

/* Linux-specific definitions: (these are the C library offsets and not the kernel ones) */

/* Define various structure offsets to simplify cross-compilation.  */

/* Offsets for x86 Linux "ucontext_t":  */

#define LINUX_UC_FLAGS_OFF	0x00
#define LINUX_UC_LINK_OFF	0x04
#define LINUX_UC_STACK_OFF	0x08
#define LINUX_UC_MCONTEXT_OFF	0x14
#define LINUX_UC_SIGMASK_OFF	0x6c
// Bionic uses 8 bytes for sigmask (just like the kernel) whereas libunwind
// expects by default a glibc like sigmask (128 bytes).
#if defined(__ANDROID__)
#define LINUX_UC_FPREGS_MEM_OFF	0x74
#else
#define LINUX_UC_FPREGS_MEM_OFF	0xec
#endif

/* The struct sigcontext is located at an offset of 4
   from the stack pointer in the signal frame.         */

/* Offsets for x86 Linux "struct sigcontext":  */

#define LINUX_SC_GS_OFF		0x00
#define LINUX_SC_GSH_OFF	0x02
#define LINUX_SC_FS_OFF		0x04
#define LINUX_SC_FSH_OFF	0x06
#define LINUX_SC_ES_OFF		0x08
#define LINUX_SC_ESH_OFF	0x0a
#define LINUX_SC_DS_OFF		0x0c
#define LINUX_SC_DSH_OFF	0x0e
#define LINUX_SC_EDI_OFF	0x10
#define LINUX_SC_ESI_OFF	0x14
#define LINUX_SC_EBP_OFF	0x18
#define LINUX_SC_ESP_OFF	0x1c
#define LINUX_SC_EBX_OFF	0x20
#define LINUX_SC_EDX_OFF	0x24
#define LINUX_SC_ECX_OFF	0x28
#define LINUX_SC_EAX_OFF	0x2c
#define LINUX_SC_TRAPNO_OFF	0x30
#define LINUX_SC_ERR_OFF	0x34
#define LINUX_SC_EIP_OFF	0x38
#define LINUX_SC_CS_OFF		0x3c
#define LINUX_SC_CSH_OFF	0x3e
#define LINUX_SC_EFLAGS_OFF	0x40
#define LINUX_SC_ESP_AT_SIGNAL_OFF	0x44
#define LINUX_SC_SS_OFF		0x48
#define LINUX_SC_SSH_OFF	0x4a
#define LINUX_SC_FPSTATE_OFF	0x4c
#define LINUX_SC_OLDMASK_OFF	0x50
#define LINUX_SC_CR2_OFF	0x54

/* Offsets for x86 Linux "struct _fpstate":  */

#define LINUX_FPSTATE_CW_OFF		0x000
#define LINUX_FPSTATE_SW_OFF		0x004
#define LINUX_FPSTATE_TAG_OFF		0x008
#define LINUX_FPSTATE_IPOFF_OFF		0x00c
#define LINUX_FPSTATE_CSSEL_OFF		0x010
#define LINUX_FPSTATE_DATAOFF_OFF	0x014
#define LINUX_FPSTATE_DATASEL_OFF	0x018
#define LINUX_FPSTATE_ST0_OFF		0x01c
#define LINUX_FPSTATE_ST1_OFF		0x026
#define LINUX_FPSTATE_ST2_OFF		0x030
#define LINUX_FPSTATE_ST3_OFF		0x03a
#define LINUX_FPSTATE_ST4_OFF		0x044
#define LINUX_FPSTATE_ST5_OFF		0x04e
#define LINUX_FPSTATE_ST6_OFF		0x058
#define LINUX_FPSTATE_ST7_OFF		0x062
#define LINUX_FPSTATE_STATUS_OFF	0x06c
#define LINUX_FPSTATE_MAGIC_OFF		0x06e
#define LINUX_FPSTATE_FXSR_ENV_OFF	0x070
#define LINUX_FPSTATE_MXCSR_OFF		0x088
#define LINUX_FPSTATE_FXSR_ST0_OFF	0x090
#define LINUX_FPSTATE_FXSR_ST1_OFF	0x0a0
#define LINUX_FPSTATE_FXSR_ST2_OFF	0x0b0
#define LINUX_FPSTATE_FXSR_ST3_OFF	0x0c0
#define LINUX_FPSTATE_FXSR_ST4_OFF	0x0d0
#define LINUX_FPSTATE_FXSR_ST5_OFF	0x0e0
#define LINUX_FPSTATE_FXSR_ST6_OFF	0x0f0
#define LINUX_FPSTATE_FXSR_ST7_OFF	0x100
#define LINUX_FPSTATE_XMM0_OFF		0x110
#define LINUX_FPSTATE_XMM1_OFF		0x120
#define LINUX_FPSTATE_XMM2_OFF		0x130
#define LINUX_FPSTATE_XMM3_OFF		0x140
#define LINUX_FPSTATE_XMM4_OFF		0x150
#define LINUX_FPSTATE_XMM5_OFF		0x160
#define LINUX_FPSTATE_XMM6_OFF		0x170
#define LINUX_FPSTATE_XMM7_OFF		0x180

/* FreeBSD-specific definitions: */

#define FREEBSD_SC_UCONTEXT_OFF		0x20
#define FREEBSD_UC_MCONTEXT_OFF		0x10

#define FREEBSD_UC_MCONTEXT_GS_OFF	0x14
#define FREEBSD_UC_MCONTEXT_FS_OFF	0x18
#define FREEBSD_UC_MCONTEXT_ES_OFF	0x1c
#define FREEBSD_UC_MCONTEXT_DS_OFF	0x20
#define FREEBSD_UC_MCONTEXT_EDI_OFF	0x24
#define FREEBSD_UC_MCONTEXT_ESI_OFF	0x28
#define FREEBSD_UC_MCONTEXT_EBP_OFF	0x2c
#define FREEBSD_UC_MCONTEXT_EBX_OFF	0x34
#define FREEBSD_UC_MCONTEXT_EDX_OFF	0x38
#define FREEBSD_UC_MCONTEXT_ECX_OFF	0x3c
#define FREEBSD_UC_MCONTEXT_EAX_OFF	0x40
#define FREEBSD_UC_MCONTEXT_TRAPNO_OFF	0x44
#define FREEBSD_UC_MCONTEXT_EIP_OFF	0x4c
#define FREEBSD_UC_MCONTEXT_ESP_OFF	0x58
#define FREEBSD_UC_MCONTEXT_CS_OFF	0x50
#define FREEBSD_UC_MCONTEXT_EFLAGS_OFF	0x54
#define FREEBSD_UC_MCONTEXT_SS_OFF	0x5c
#define FREEBSD_UC_MCONTEXT_MC_LEN_OFF	0x60
#define FREEBSD_UC_MCONTEXT_FPFORMAT_OFF 0x64
#define FREEBSD_UC_MCONTEXT_OWNEDFP_OFF	0x68
#define FREEBSD_UC_MCONTEXT_FPSTATE_OFF	0x70

#define	FREEBSD_UC_MCONTEXT_CW_OFF	0x70
#define	FREEBSD_UC_MCONTEXT_SW_OFF	0x74
#define	FREEBSD_UC_MCONTEXT_TAG_OFF	0x78
#define	FREEBSD_UC_MCONTEXT_IPOFF_OFF	0x7c
#define	FREEBSD_UC_MCONTEXT_CSSEL_OFF	0x80
#define	FREEBSD_UC_MCONTEXT_DATAOFF_OFF	0x84
#define	FREEBSD_US_MCONTEXT_DATASEL_OFF	0x88
#define	FREEBSD_UC_MCONTEXT_ST0_OFF	0x8c

#define	FREEBSD_UC_MCONTEXT_CW_XMM_OFF	0x70
#define	FREEBSD_UC_MCONTEXT_SW_XMM_OFF	0x72
#define	FREEBSD_UC_MCONTEXT_TAG_XMM_OFF	0x74
#define	FREEBSD_UC_MCONTEXT_IPOFF_XMM_OFF 0x78
#define	FREEBSD_UC_MCONTEXT_CSSEL_XMM_OFF 0x7c
#define	FREEBSD_UC_MCONTEXT_DATAOFF_XMM_OFF 0x80
#define	FREEBSD_US_MCONTEXT_DATASEL_XMM_OFF 0x84
#define	FREEBSD_UC_MCONTEXT_MXCSR_XMM_OFF 0x88
#define	FREEBSD_UC_MCONTEXT_ST0_XMM_OFF	0x90
#define	FREEBSD_UC_MCONTEXT_XMM0_OFF	0x110

#define FREEBSD_UC_MCONTEXT_MC_LEN_VAL	0x280
#define FREEBSD_UC_MCONTEXT_FPFMT_NODEV	0x10000
#define FREEBSD_UC_MCONTEXT_FPFMT_387	0x10001
#define FREEBSD_UC_MCONTEXT_FPFMT_XMM	0x10002
#define	FREEBSD_UC_MCONTEXT_FPOWNED_NONE 0x20000
#define	FREEBSD_UC_MCONTEXT_FPOWNED_FPU	0x20001
#define	FREEBSD_UC_MCONTEXT_FPOWNED_PCB	0x20002