typos fixed

This commit is contained in:
Joel Sherrill
1995-10-31 21:28:16 +00:00
parent 97005786d8
commit c4808ca59f
25 changed files with 481 additions and 73 deletions

View File

@@ -109,7 +109,7 @@ Message_queue_Control *_Message_queue_Allocate (
* *
* Output parameters: * Output parameters:
* id - queue id * id - queue id
* RTEMS_SUCCESSFUL - if successful * RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful * error code - if unsuccessful
*/ */

View File

@@ -314,6 +314,8 @@ rtems_status_code rtems_region_get_segment(
Thread_Control *executing; Thread_Control *executing;
void *the_segment; void *the_segment;
*segment = NULL;
if ( size == 0 ) if ( size == 0 )
return RTEMS_INVALID_SIZE; return RTEMS_INVALID_SIZE;

View File

@@ -62,7 +62,7 @@ extern "C" {
#define RTEMS_MESSAGE_QUEUE_DELETE 38 #define RTEMS_MESSAGE_QUEUE_DELETE 38
#define RTEMS_MESSAGE_QUEUE_SEND 39 #define RTEMS_MESSAGE_QUEUE_SEND 39
#define RTEMS_MESSAGE_QUEUE_URGENT 40 #define RTEMS_MESSAGE_QUEUE_URGENT 40
#define RTEMS_MESSAGE_QUEUE_BROADCAst 41 #define RTEMS_MESSAGE_QUEUE_BROADCAST 41
#define RTEMS_MESSAGE_QUEUE_RECEIVE 42 #define RTEMS_MESSAGE_QUEUE_RECEIVE 42
#define RTEMS_MESSAGE_QUEUE_FLUSH 43 #define RTEMS_MESSAGE_QUEUE_FLUSH 43
#define RTEMS_EVENT_SEND 44 #define RTEMS_EVENT_SEND 44

View File

@@ -115,9 +115,9 @@ STATIC INLINE void _IO_Manager_initialization(
*/ */
rtems_status_code rtems_io_register_name( rtems_status_code rtems_io_register_name(
char *device_name, char *device_name,
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor rtems_device_minor_number minor
); );
@@ -130,8 +130,8 @@ rtems_status_code rtems_io_register_name(
*/ */
rtems_status_code rtems_io_lookup_name( rtems_status_code rtems_io_lookup_name(
const char *pathname, const char *name,
rtems_driver_name_t **rnp rtems_driver_name_t **device_info
); );
@@ -147,7 +147,7 @@ rtems_status_code rtems_io_lookup_name(
rtems_status_code rtems_io_initialize( rtems_status_code rtems_io_initialize(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -162,7 +162,7 @@ rtems_status_code rtems_io_initialize(
rtems_status_code rtems_io_open( rtems_status_code rtems_io_open(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -177,7 +177,7 @@ rtems_status_code rtems_io_open(
rtems_status_code rtems_io_close( rtems_status_code rtems_io_close(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -192,7 +192,7 @@ rtems_status_code rtems_io_close(
rtems_status_code rtems_io_read( rtems_status_code rtems_io_read(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -207,7 +207,7 @@ rtems_status_code rtems_io_read(
rtems_status_code rtems_io_write( rtems_status_code rtems_io_write(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -222,7 +222,7 @@ rtems_status_code rtems_io_write(
rtems_status_code rtems_io_control( rtems_status_code rtems_io_control(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*

View File

@@ -62,7 +62,7 @@ extern "C" {
#define RTEMS_MESSAGE_QUEUE_DELETE 38 #define RTEMS_MESSAGE_QUEUE_DELETE 38
#define RTEMS_MESSAGE_QUEUE_SEND 39 #define RTEMS_MESSAGE_QUEUE_SEND 39
#define RTEMS_MESSAGE_QUEUE_URGENT 40 #define RTEMS_MESSAGE_QUEUE_URGENT 40
#define RTEMS_MESSAGE_QUEUE_BROADCAst 41 #define RTEMS_MESSAGE_QUEUE_BROADCAST 41
#define RTEMS_MESSAGE_QUEUE_RECEIVE 42 #define RTEMS_MESSAGE_QUEUE_RECEIVE 42
#define RTEMS_MESSAGE_QUEUE_FLUSH 43 #define RTEMS_MESSAGE_QUEUE_FLUSH 43
#define RTEMS_EVENT_SEND 44 #define RTEMS_EVENT_SEND 44

View File

@@ -115,9 +115,9 @@ STATIC INLINE void _IO_Manager_initialization(
*/ */
rtems_status_code rtems_io_register_name( rtems_status_code rtems_io_register_name(
char *device_name, char *device_name,
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor rtems_device_minor_number minor
); );
@@ -130,8 +130,8 @@ rtems_status_code rtems_io_register_name(
*/ */
rtems_status_code rtems_io_lookup_name( rtems_status_code rtems_io_lookup_name(
const char *pathname, const char *name,
rtems_driver_name_t **rnp rtems_driver_name_t **device_info
); );
@@ -147,7 +147,7 @@ rtems_status_code rtems_io_lookup_name(
rtems_status_code rtems_io_initialize( rtems_status_code rtems_io_initialize(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -162,7 +162,7 @@ rtems_status_code rtems_io_initialize(
rtems_status_code rtems_io_open( rtems_status_code rtems_io_open(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -177,7 +177,7 @@ rtems_status_code rtems_io_open(
rtems_status_code rtems_io_close( rtems_status_code rtems_io_close(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -192,7 +192,7 @@ rtems_status_code rtems_io_close(
rtems_status_code rtems_io_read( rtems_status_code rtems_io_read(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -207,7 +207,7 @@ rtems_status_code rtems_io_read(
rtems_status_code rtems_io_write( rtems_status_code rtems_io_write(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -222,7 +222,7 @@ rtems_status_code rtems_io_write(
rtems_status_code rtems_io_control( rtems_status_code rtems_io_control(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*

View File

@@ -46,8 +46,13 @@ void _IO_Initialize_all_drivers( void )
* Associate a name with a driver * Associate a name with a driver
* *
* Input Paramters: * Input Paramters:
* device_name - pointer to name string to associate with device
* major - device major number to receive name
* minor - device minor number to receive name
* *
* Output Parameters: * Output Parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/ */
rtems_status_code rtems_io_register_name( rtems_status_code rtems_io_register_name(
@@ -90,13 +95,17 @@ rtems_status_code rtems_io_register_name(
* Find what driver "owns" this name * Find what driver "owns" this name
* *
* Input Paramters: * Input Paramters:
* name - name to lookup the associated device
* *
* Output Parameters: * Output Parameters:
* device_info - device associate with name
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/ */
rtems_status_code rtems_io_lookup_name( rtems_status_code rtems_io_lookup_name(
const char *pathname, const char *name,
rtems_driver_name_t **rnp rtems_driver_name_t **device_info
) )
{ {
rtems_driver_name_t *np; rtems_driver_name_t *np;
@@ -106,13 +115,13 @@ rtems_status_code rtems_io_lookup_name(
index < _IO_Number_of_devices ; index < _IO_Number_of_devices ;
index++, np++ ) index++, np++ )
if (np->device_name) if (np->device_name)
if (strncmp(np->device_name, pathname, np->device_name_length) == 0) if (strncmp(np->device_name, name, np->device_name_length) == 0)
{ {
*rnp = np; *device_info = np;
return RTEMS_SUCCESSFUL; return RTEMS_SUCCESSFUL;
} }
*rnp = 0; *device_info = 0;
return RTEMS_UNSATISFIED; return RTEMS_UNSATISFIED;
} }
@@ -165,7 +174,7 @@ rtems_status_code rtems_io_initialize(
rtems_status_code rtems_io_open( rtems_status_code rtems_io_open(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -195,7 +204,7 @@ rtems_status_code rtems_io_open(
rtems_status_code rtems_io_close( rtems_status_code rtems_io_close(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -225,7 +234,7 @@ rtems_status_code rtems_io_close(
rtems_status_code rtems_io_read( rtems_status_code rtems_io_read(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -255,7 +264,7 @@ rtems_status_code rtems_io_read(
rtems_status_code rtems_io_write( rtems_status_code rtems_io_write(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -285,7 +294,7 @@ rtems_status_code rtems_io_write(
rtems_status_code rtems_io_control( rtems_status_code rtems_io_control(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;

View File

@@ -108,11 +108,3 @@ thus would be unable to restore the FP context of the incoming task.
2. On a deferred FP context switch. In this case, the system might switch 2. On a deferred FP context switch. In this case, the system might switch
from FP Task A to non-FP Task B and then to FP Task C. In this scenario, from FP Task A to non-FP Task B and then to FP Task C. In this scenario,
the floating point state must technically be saved by a non-FP task. the floating point state must technically be saved by a non-FP task.

View File

@@ -1,6 +1,21 @@
/* /*
* SPARC Dependent Source * SPARC Dependent Source
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -3,6 +3,21 @@
* This include file contains information pertaining to the port of * This include file contains information pertaining to the port of
* the executive to the SPARC processor. * the executive to the SPARC processor.
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -4,6 +4,21 @@
* in an specific CPU port of RTEMS. These algorithms must be implemented * in an specific CPU port of RTEMS. These algorithms must be implemented
* in assembly language. * in assembly language.
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -18,6 +18,21 @@
* + Memory Control Register * + Memory Control Register
* + Interrupt Control * + Interrupt Control
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -3,6 +3,21 @@
* This file contains the single entry point code for * This file contains the single entry point code for
* the SPARC port of RTEMS. * the SPARC port of RTEMS.
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -3,6 +3,21 @@
* This include file contains information pertaining to the SPARC * This include file contains information pertaining to the SPARC
* processor family. * processor family.
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -3,6 +3,21 @@
* This include file contains type definitions pertaining to the * This include file contains type definitions pertaining to the
* SPARC processor family. * SPARC processor family.
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -18,6 +18,21 @@
* + Memory Control Register * + Memory Control Register
* + Interrupt Control * + Interrupt Control
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -0,0 +1,257 @@
/*
* window.s
*
* This file contains the register window management routines for the
* SPARC architecture. Trap handlers for the following capabilities
* are included in this file:
*
* + Window Overflow
* + Window Underflow
* + Flushing All Windows
*
* COPYRIGHT:
*
* This file includes the window overflow and underflow handlers from
* the file srt0.s provided with the binary distribution of the SPARC
* Instruction Simulator (SIS) found at
* ftp://ftp.estec.esa.nl/pub/ws/wsd/erc32.
*
* COPYRIGHT (c) 1995. European Space Agency.
*
* This terms of the RTEMS license apply to this file.
*
* $Id$
*/
#include <asm.h>
.seg "text"
/*
* Window overflow trap handler.
*
* On entry:
*
* l0 = psr (from trap table)
* l1 = pc
* l2 = npc
*/
PUBLIC(window_overflow_trap_handler)
SYM(window_overflow_trap_handler):
/*
* Calculate new WIM by "rotating" the valid bits in the WIM right
* by one position. The following shows how the bits move for a SPARC
* cpu implementation where SPARC_NUMBER_OF_REGISTER_WINDOWS is 8.
*
* OLD WIM = 76543210
* NEW WIM = 07654321
*
* NOTE: New WIM must be stored in a global register since the
* "save" instruction just prior to the load of the wim
* register will result in the local register set changing.
*/
mov %wim, %l3 ! l3 = WIM
mov %g1, %l7 ! save g1
srl %l3, 1, %g1 ! g1 = WIM >> 1
sll %l3, SPARC_NUMBER_OF_REGISTER_WINDOWS-1 , %l4
! l4 = WIM << (Number Windows - 1)
or %l4, %g1, %g1 ! g1 = (WIM >> 1) |
! (WIM << (Number Windows - 1))
save ! Get into window to be saved.
mov %g1, %wim ! load new WIM
nop; nop; nop ! 3 slot delay
std %l0, [%sp + 0x00] ! save local register set
std %l2, [%sp + 0x08]
std %l4, [%sp + 0x10]
std %l6, [%sp + 0x18]
std %i0, [%sp + 0x20] ! save input register set
std %i2, [%sp + 0x28]
std %i4, [%sp + 0x30]
std %i6, [%sp + 0x38]
restore ! Go back to trap window.
mov %l7, %g1 ! restore g1
jmp %l1 ! Re-execute save.
rett %l2
/*
* Window underflow trap handler.
*
* On entry:
*
* l0 = psr (from trap table)
* l1 = pc
* l2 = npc
*/
PUBLIC(window_underflow_trap_handler)
SYM(window_underflow_trap_handler):
/*
* Calculate new WIM by "rotating" the valid bits in the WIM left
* by one position. The following shows how the bits move for a SPARC
* cpu implementation where SPARC_NUMBER_OF_REGISTER_WINDOWS is 8.
*
* OLD WIM = 76543210
* NEW WIM = 07654321
*
* NOTE: New WIM must be stored in a global register since the
* "save" instruction just prior to the load of the wim
* register will result in the local register set changing.
*/
mov %wim, %l3 ! Calculate new WIM
sll %l3, 1, %l4 ! l4 = WIM << 1
srl %l3, SPARC_NUMBER_OF_REGISTER_WINDOWS-1, %l5
! l5 = WIM >> (Number Windows-1)
or %l5, %l4, %l5 ! l5 = (WIM << 1) |
! (WIM >> (Number Windows-1))
mov %l5, %wim ! load the new WIM
nop; nop; nop
restore ! Two restores to get into the
restore ! window to restore
ldd [%sp + 0x00], %l0 ! First the local register set
ldd [%sp + 0x08], %l2
ldd [%sp + 0x10], %l4
ldd [%sp + 0x18], %l6
ldd [%sp + 0x20], %i0 ! Then the input registers
ldd [%sp + 0x28], %i2
ldd [%sp + 0x30], %i4
ldd [%sp + 0x38], %i6
save ! Get back to the trap window.
save
jmp %l1 ! Re-execute restore.
rett %l2
/*
* Flush All Windows trap handler.
*
* Flush all windows with valid contents except the current one
* and the one we will be returning to.
*
* In examining the set register windows, one may logically divide
* the windows into sets (some of which may be empty) based on their
* current status:
*
* + current (i.e. in use),
* + used (i.e. a restore would not trap)
* + invalid (i.e. 1 in corresponding bit in WIM)
* + unused
*
* Either the used or unused set of windows may be empty.
*
* NOTE: We assume only one bit is set in the WIM at a time.
*
* Given a CWP of 5 and a WIM of 0x1, the registers are divided
* into sets as follows:
*
* + 0 - invalid
* + 1-4 - unused
* + 5 - current
* + 6-7 - used
*
* In this case, we only would save the used windows which we
* will not be returning to -- 6.
*
* Register Usage while saving the windows:
* g1 = current PSR
* g2 = current wim
* g3 = CWP
* g4 = wim scratch
* g5 = scratch
*
* On entry:
*
* l0 = psr (from trap table)
* l1 = pc
* l2 = npc
*/
PUBLIC(window_flush_trap_handler)
SYM(window_flush_trap_handler):
/*
* Save the global registers we will be using
*/
mov %g1, %l3
mov %g2, %l4
mov %g3, %l5
mov %g4, %l6
mov %g5, %l7
mov %l0, %g1 ! g1 = psr
mov %wim, %g2 ! g2 = wim
and %l0, SPARC_PSR_CWP_MASK, %g3 ! g3 = CWP
add %g3, 1, %g5 ! g5 = CWP + 1
and %g5, SPARC_NUMBER_OF_REGISTER_WINDOWS - 1, %g5
mov 1, %g4
sll %g4, %g5, %g4 ! g4 = WIM mask for CWP+1 invalid
restore ! go back one register window
save_frame_loop:
sll %g4, 1, %g5 ! rotate the "wim" left 1
srl %g4, SPARC_NUMBER_OF_REGISTER_WINDOWS - 1, %g4
or %g4, %g5, %g4 ! g4 = wim if we do one restore
/*
* If a restore would not underflow, then continue.
*/
andcc %g4, %g2, %g0 ! Any windows to flush?
bnz done_flushing ! No, then continue
nop
restore ! back one window
/*
* Now save the window just as if we overflowed to it.
*/
std %l0, [%sp + CPU_STACK_FRAME_L0_OFFSET]
std %l2, [%sp + CPU_STACK_FRAME_L2_OFFSET]
std %l4, [%sp + CPU_STACK_FRAME_L4_OFFSET]
std %l6, [%sp + CPU_STACK_FRAME_L6_OFFSET]
std %i0, [%sp + CPU_STACK_FRAME_I0_OFFSET]
std %i2, [%sp + CPU_STACK_FRAME_I2_OFFSET]
std %i4, [%sp + CPU_STACK_FRAME_I4_OFFSET]
std %i6, [%sp + CPU_STACK_FRAME_I6_FP_OFFSET]
ba save_frame_loop
nop
done_flushing:
add %g3, 2, %g3 ! calculate desired WIM
and %g3, SPARC_NUMBER_OF_REGISTER_WINDOWS - 1, %g3
mov 1, %g4
sll %g4, %g3, %g4 ! g4 = new WIM
mov %g4, %wim
mov %g1, %psr ! restore PSR
nop
nop
nop
/*
* Restore the global registers we used
*/
mov %l3, %g1
mov %l4, %g2
mov %l5, %g3
mov %l6, %g4
mov %l7, %g5
jmpl %l2, %g0
rett %l2 + 4
/* end of file */

View File

@@ -354,6 +354,8 @@ uninitialized =
uninitialized = 0; uninitialized = 0;
#ifndef unix /* make sure this is not a native compile */
#ifdef i386 #ifdef i386
/* cpu.h */ /* cpu.h */
@@ -424,6 +426,7 @@ uninitialized += (sizeof _CPU_Interrupt_stack_low) +
(sizeof _CPU_IRQ_info); (sizeof _CPU_IRQ_info);
#endif #endif
#endif /* !unix */
initialized += initialized +=
/*copyrt.h*/ (strlen(_Copyright_Notice)+1) + /*copyrt.h*/ (strlen(_Copyright_Notice)+1) +
@@ -437,11 +440,13 @@ initialized +=
(sizeof _TOD_Days_to_date) + (sizeof _TOD_Days_to_date) +
(sizeof _TOD_Days_since_last_leap_year); (sizeof _TOD_Days_since_last_leap_year);
#ifndef unix /* make sure this is not native */
#ifdef sparc #ifdef sparc
initialized += (sizeof _CPU_Trap_slot_template); initialized += (sizeof _CPU_Trap_slot_template);
#endif #endif
#endif /* !unix */
puts( "" ); puts( "" );

View File

@@ -109,7 +109,7 @@ Message_queue_Control *_Message_queue_Allocate (
* *
* Output parameters: * Output parameters:
* id - queue id * id - queue id
* RTEMS_SUCCESSFUL - if successful * RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful * error code - if unsuccessful
*/ */

View File

@@ -314,6 +314,8 @@ rtems_status_code rtems_region_get_segment(
Thread_Control *executing; Thread_Control *executing;
void *the_segment; void *the_segment;
*segment = NULL;
if ( size == 0 ) if ( size == 0 )
return RTEMS_INVALID_SIZE; return RTEMS_INVALID_SIZE;

View File

@@ -115,9 +115,9 @@ STATIC INLINE void _IO_Manager_initialization(
*/ */
rtems_status_code rtems_io_register_name( rtems_status_code rtems_io_register_name(
char *device_name, char *device_name,
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor rtems_device_minor_number minor
); );
@@ -130,8 +130,8 @@ rtems_status_code rtems_io_register_name(
*/ */
rtems_status_code rtems_io_lookup_name( rtems_status_code rtems_io_lookup_name(
const char *pathname, const char *name,
rtems_driver_name_t **rnp rtems_driver_name_t **device_info
); );
@@ -147,7 +147,7 @@ rtems_status_code rtems_io_lookup_name(
rtems_status_code rtems_io_initialize( rtems_status_code rtems_io_initialize(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -162,7 +162,7 @@ rtems_status_code rtems_io_initialize(
rtems_status_code rtems_io_open( rtems_status_code rtems_io_open(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -177,7 +177,7 @@ rtems_status_code rtems_io_open(
rtems_status_code rtems_io_close( rtems_status_code rtems_io_close(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -192,7 +192,7 @@ rtems_status_code rtems_io_close(
rtems_status_code rtems_io_read( rtems_status_code rtems_io_read(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -207,7 +207,7 @@ rtems_status_code rtems_io_read(
rtems_status_code rtems_io_write( rtems_status_code rtems_io_write(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*
@@ -222,7 +222,7 @@ rtems_status_code rtems_io_write(
rtems_status_code rtems_io_control( rtems_status_code rtems_io_control(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
); );
/* /*

View File

@@ -46,8 +46,13 @@ void _IO_Initialize_all_drivers( void )
* Associate a name with a driver * Associate a name with a driver
* *
* Input Paramters: * Input Paramters:
* device_name - pointer to name string to associate with device
* major - device major number to receive name
* minor - device minor number to receive name
* *
* Output Parameters: * Output Parameters:
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/ */
rtems_status_code rtems_io_register_name( rtems_status_code rtems_io_register_name(
@@ -90,13 +95,17 @@ rtems_status_code rtems_io_register_name(
* Find what driver "owns" this name * Find what driver "owns" this name
* *
* Input Paramters: * Input Paramters:
* name - name to lookup the associated device
* *
* Output Parameters: * Output Parameters:
* device_info - device associate with name
* RTEMS_SUCCESSFUL - if successful
* error code - if unsuccessful
*/ */
rtems_status_code rtems_io_lookup_name( rtems_status_code rtems_io_lookup_name(
const char *pathname, const char *name,
rtems_driver_name_t **rnp rtems_driver_name_t **device_info
) )
{ {
rtems_driver_name_t *np; rtems_driver_name_t *np;
@@ -106,13 +115,13 @@ rtems_status_code rtems_io_lookup_name(
index < _IO_Number_of_devices ; index < _IO_Number_of_devices ;
index++, np++ ) index++, np++ )
if (np->device_name) if (np->device_name)
if (strncmp(np->device_name, pathname, np->device_name_length) == 0) if (strncmp(np->device_name, name, np->device_name_length) == 0)
{ {
*rnp = np; *device_info = np;
return RTEMS_SUCCESSFUL; return RTEMS_SUCCESSFUL;
} }
*rnp = 0; *device_info = 0;
return RTEMS_UNSATISFIED; return RTEMS_UNSATISFIED;
} }
@@ -165,7 +174,7 @@ rtems_status_code rtems_io_initialize(
rtems_status_code rtems_io_open( rtems_status_code rtems_io_open(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -195,7 +204,7 @@ rtems_status_code rtems_io_open(
rtems_status_code rtems_io_close( rtems_status_code rtems_io_close(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -225,7 +234,7 @@ rtems_status_code rtems_io_close(
rtems_status_code rtems_io_read( rtems_status_code rtems_io_read(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -255,7 +264,7 @@ rtems_status_code rtems_io_read(
rtems_status_code rtems_io_write( rtems_status_code rtems_io_write(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;
@@ -285,7 +294,7 @@ rtems_status_code rtems_io_write(
rtems_status_code rtems_io_control( rtems_status_code rtems_io_control(
rtems_device_major_number major, rtems_device_major_number major,
rtems_device_minor_number minor, rtems_device_minor_number minor,
void *argument void *argument
) )
{ {
rtems_device_driver_entry callout; rtems_device_driver_entry callout;

View File

@@ -108,11 +108,3 @@ thus would be unable to restore the FP context of the incoming task.
2. On a deferred FP context switch. In this case, the system might switch 2. On a deferred FP context switch. In this case, the system might switch
from FP Task A to non-FP Task B and then to FP Task C. In this scenario, from FP Task A to non-FP Task B and then to FP Task C. In this scenario,
the floating point state must technically be saved by a non-FP task. the floating point state must technically be saved by a non-FP task.

View File

@@ -1,6 +1,21 @@
/* /*
* SPARC Dependent Source * SPARC Dependent Source
* *
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*
* $Id$ * $Id$
*/ */

View File

@@ -354,6 +354,8 @@ uninitialized =
uninitialized = 0; uninitialized = 0;
#ifndef unix /* make sure this is not a native compile */
#ifdef i386 #ifdef i386
/* cpu.h */ /* cpu.h */
@@ -424,6 +426,7 @@ uninitialized += (sizeof _CPU_Interrupt_stack_low) +
(sizeof _CPU_IRQ_info); (sizeof _CPU_IRQ_info);
#endif #endif
#endif /* !unix */
initialized += initialized +=
/*copyrt.h*/ (strlen(_Copyright_Notice)+1) + /*copyrt.h*/ (strlen(_Copyright_Notice)+1) +
@@ -437,11 +440,13 @@ initialized +=
(sizeof _TOD_Days_to_date) + (sizeof _TOD_Days_to_date) +
(sizeof _TOD_Days_since_last_leap_year); (sizeof _TOD_Days_since_last_leap_year);
#ifndef unix /* make sure this is not native */
#ifdef sparc #ifdef sparc
initialized += (sizeof _CPU_Trap_slot_template); initialized += (sizeof _CPU_Trap_slot_template);
#endif #endif
#endif /* !unix */
puts( "" ); puts( "" );