Messages in this thread | | | From | Keith Owens <> | Subject | Re: current as segment register was Re: Using %cr2 to reference "current" | Date | Wed, 07 Nov 2001 14:42:16 +1100 |
| |
On 06 Nov 2001 20:02:09 +0100, Andi Kleen <ak@suse.de> wrote: >One nasty thing is that lea doesn't work on segment registers. It needs >an quite ugly inline assembly mess similar to get/put_user to implement >read/write/add_pda functions for the fundamental types. To implement >that properly without hardcoded offsets it is also needed to have an >offset.c like many other ports that puts structure offsets at compile >time into an include file.
Already done in kbuild 2.5, it creates arch/i386/asm-offsets.h. Currently containing this list, which can easily be expanded.
#ifndef __ASM_OFFSETS_H__ #define __ASM_OFFSETS_H__ /* * DO NOT MODIFY * * This file was generated by arch/i386/Makefile.in. * */
state = 0 /* 0x0 offsetof(struct task_struct, state) */ flags = 4 /* 0x4 offsetof(struct task_struct, flags) */ sigpending = 8 /* 0x8 offsetof(struct task_struct, sigpending) */ addr_limit = 12 /* 0xc offsetof(struct task_struct, addr_limit) */ exec_domain = 16 /* 0x10 offsetof(struct task_struct, exec_domain) */ need_resched = 20 /* 0x14 offsetof(struct task_struct, need_resched) */ tsk_ptrace = 24 /* 0x18 offsetof(struct task_struct, ptrace) */ processor = 52 /* 0x34 offsetof(struct task_struct, processor) */
ENOSYS = 38 /* 0x26 ENOSYS */
#endif
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |