Imagelibrary/rtems
1
0
Fork 1
mirror of https://gitlab.rtems.org/rtems/rtos/rtems.git synced 2025-12-26 06:08:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

2010-05-21 Vinu Rajashekhar <vinutheraj@gmail.com>

Browse Source 
* rtems/score/registers.h: Remove structs with bit-fields. Add a mask
	for cr3 page directory.
This commit is contained in:
Joel Sherrill
2010-05-21 19:02:05 +00:00
parent d1c3dc906b
commit 4a76be7ef5
2 changed files with 6 additions and 115 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
cpukit/score/cpu/i386/ChangeLog
View File

@@ -1,3 +1,8 @@
2010-05-21 Vinu Rajashekhar <vinutheraj@gmail.com>
* rtems/score/registers.h: Remove structs with bit-fields. Add a mask
for cr3 page directory.
2010-03-27 Joel Sherrill <joel.sherrill@oarcorp.com>
* cpu.c, cpu_asm.S, sse_test.c: Add include of config.h

116
cpukit/score/cpu/i386/rtems/score/registers.h
View File

@@ -67,120 +67,6 @@
#define CR3_PAGE_CACHE_DISABLE 0x10
#define CR3_PAGE_WRITE_THROUGH 0x8
#ifndef ASM
/*
* definition of eflags registers has a bit field structure
*/
typedef struct {
/*
* fist byte : bits 0->7
*/
unsigned int carry : 1;
unsigned int : 1;
unsigned int parity : 1;
unsigned int : 1;
unsigned int auxiliary_carry : 1;
unsigned int : 1;
unsigned int zero : 1; /* result is zero */
unsigned int sign : 1; /* result is less than zero */
/*
* Second byte : bits 7->15
*/
unsigned int trap : 1;
unsigned int intr_enable : 1; /* set => intr on */
unsigned int direction : 1; /* set => autodecrement */
unsigned int overflow : 1;
unsigned int IO_privilege : 2;
unsigned int nested_task : 1;
unsigned int : 1;
/*
* Third byte : bits 15->23
*/
unsigned int resume : 1;
unsigned int virtual_mode : 1;
unsigned int aligment_check : 1;
unsigned int virtual_intr : 1;
unsigned int virtual_intr_pending : 1;
unsigned int id : 1;
unsigned int : 2;
/*
* fourth byte : bits 24->31 : UNUSED
*/
unsigned int : 8;
}eflags_bits;
typedef union {
eflags_bits eflags;
unsigned int i;
}eflags;
/*
* definition of eflags registers has a bit field structure
*/
typedef struct {
/*
* fist byte : bits 0->7
*/
unsigned int protection_enable : 1;
unsigned int monitor_coproc : 1;
unsigned int coproc_soft_emul : 1;
unsigned int floating_instr_except : 1;
unsigned int extension_type : 1;
unsigned int numeric_error : 1;
unsigned int : 2;
/*
* second byte 8->15 : UNUSED
*/
unsigned int : 8;
/*
* third byte 16->23
*/
unsigned int write_protect : 1;
unsigned int : 1;
unsigned int aligment_mask : 1;
unsigned int : 1;
unsigned int : 4;
/*
* fourth byte 24->31
*/
unsigned int : 4;
unsigned int : 1;
unsigned int no_write_through : 1;
unsigned int page_level_cache_disable : 1;
unsigned int paging : 1;
}cr0_bits;
typedef union {
cr0_bits cr0;
unsigned int i;
}cr0;
/*
* definition of cr3 registers has a bit field structure
*/
typedef struct {
unsigned int : 3;
unsigned int page_write_transparent : 1;
unsigned int page_cache_disable : 1;
unsigned int : 7;
unsigned int page_directory_base :20;
}cr3_bits;
typedef union {
cr3_bits cr3;
unsigned int i;
}cr3;
#endif
#define CR3_PAGE_DIRECTORY_MASK 0xFFFFF000
#endif