gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add x86_sregs into x86_user_context

Browse Source 
x86_sregs contains the registers which are included in user_regs_struct
but not included in x86_basic_regs.
This commit is contained in:
NAKAMURA Gou
2015-02-25 18:25:39 +09:00
parent 4aa8ba2eef
commit b66b950129
3 changed files with 37 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
arch/x86/kernel/include/ihk/context.h
View File

@ -25,7 +25,19 @@ typedef struct x86_kregs ihk_mc_kernel_context_t;
/* XXX: User context should contain floating point registers */
struct x86_user_context {
struct x86_basic_regs gpr;
struct x86_sregs sr;
/* 16-byte boundary here */
uint8_t is_gpr_valid;
uint8_t is_sr_valid;
uint8_t spare_flags6;
uint8_t spare_flags5;
uint8_t spare_flags4;
uint8_t spare_flags3;
uint8_t spare_flags2;
uint8_t spare_flags1;
struct x86_basic_regs gpr; /* must be last */
/* 16-byte boundary here */
};
typedef struct x86_user_context ihk_mc_user_context_t;

9
arch/x86/kernel/include/registers.h
View File

@ -184,6 +184,15 @@ struct x86_basic_regs {
unsigned long rip, cs, rflags, rsp, ss;
};
struct x86_sregs {
unsigned long fs_base;
unsigned long gs_base;
unsigned long ds;
unsigned long es;
unsigned long fs;
unsigned long gs;
};
#define REGS_GET_STACK_POINTER(regs) (((struct x86_regs *)regs)->rsp)
/*

19
arch/x86/kernel/interrupt.S
View File

@ -25,9 +25,16 @@
#define USER_DS (56 + 3)
/* struct x86_user_context */
#define RAX_OFFSET 80
#define ERROR_OFFSET 120
#define RSP_OFFSET 152
#define X86_SREGS_BASE (0)
#define X86_SREGS_SIZE 48
#define X86_FLAGS_BASE (X86_SREGS_BASE + X86_SREGS_SIZE)
#define X86_FLAGS_SIZE 8
#define X86_REGS_BASE (X86_FLAGS_BASE + X86_FLAGS_SIZE)
#define RAX_OFFSET (X86_REGS_BASE + 80)
#define ERROR_OFFSET (X86_REGS_BASE + 120)
#define RSP_OFFSET (X86_REGS_BASE + 152)
#define PUSH_ALL_REGS \
pushq %rdi; \
@ -44,9 +51,13 @@
pushq %r12; \
pushq %r13; \
pushq %r14; \
pushq %r15
pushq %r15; \
pushq $1; /* is_gpr_valid is set, and others are cleared */ \
subq $X86_FLAGS_BASE,%rsp /* for x86_sregs, etc. */
#define POP_ALL_REGS \
movq $0,X86_FLAGS_BASE(%rsp); /* clear all flags */ \
addq $X86_REGS_BASE,%rsp; /* discard x86_sregs, flags, etc. */ \
popq %r15; \
popq %r14; \
popq %r13; \