diff options
Diffstat (limited to 'gdb/i386-linux-tdep.h')
| -rw-r--r-- | gdb/i386-linux-tdep.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/gdb/i386-linux-tdep.h b/gdb/i386-linux-tdep.h index 11f7295..eaeb63c 100644 --- a/gdb/i386-linux-tdep.h +++ b/gdb/i386-linux-tdep.h @@ -30,12 +30,38 @@ /* Register number for the "orig_eax" pseudo-register. If this pseudo-register contains a value >= 0 it is interpreted as the system call number that the kernel is supposed to restart. */ -#define I386_LINUX_ORIG_EAX_REGNUM I386_SSE_NUM_REGS +#define I386_LINUX_ORIG_EAX_REGNUM I386_AVX_NUM_REGS /* Total number of registers for GNU/Linux. */ #define I386_LINUX_NUM_REGS (I386_LINUX_ORIG_EAX_REGNUM + 1) +/* Get XSAVE extended state xcr0 from core dump. */ +extern uint64_t i386_linux_core_read_xcr0 + (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd); + /* Linux target description. */ extern struct target_desc *tdesc_i386_linux; +extern struct target_desc *tdesc_i386_avx_linux; + +/* Format of XSAVE extended state is: + struct + { + fxsave_bytes[0..463] + sw_usable_bytes[464..511] + xstate_hdr_bytes[512..575] + avx_bytes[576..831] + future_state etc + }; + + Same memory layout will be used for the coredump NT_X86_XSTATE + representing the XSAVE extended state registers. + + The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled + extended state mask, which is the same as the extended control register + 0 (the XFEATURE_ENABLED_MASK register), XCR0. We can use this mask + together with the mask saved in the xstate_hdr_bytes to determine what + states the processor/OS supports and what state, used or initialized, + the process/thread is in. */ +#define I386_LINUX_XSAVE_XCR0_OFFSET 464 #endif /* i386-linux-tdep.h */ |