Imagelibrary/rtems
1
0
Fork 1
mirror of https://gitlab.rtems.org/rtems/rtos/rtems.git synced 2025-11-16 12:34:45 +00:00
Code Issues Packages Projects Releases Wiki Activity

2001-09-27 Jiri Gaisler <jiri@gaisler.com>

Browse Source 
* cpu_asm.S: Small patch to fix a bug in the rtems sparc port. The
	bug has been there all the time, but only hits the leon bsp since the
	leon cpu has a 5-stage pipeline (erc32 has 4 stages).
This commit is contained in:
Joel Sherrill
2001-09-28 14:10:46 +00:00
parent 7a5dbdd33d
commit 388cf1286f
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
c/src/exec/score/cpu/sparc/cpu_asm.S
View File

@@ -52,8 +52,8 @@ SYM(_CPU_Context_save_fp):
or %l1, %lo(SPARC_PSR_EF_MASK), %l1
or %l0, %l1, %l0
mov %l0, %psr ! **** ENABLE FLOAT ACCESS ****
ld [%i0], %l0
nop; nop; nop; ! Need three nops before EF is
ld [%i0], %l0 ! active due to pipeline delay!!!
std %f0, [%l0 + FO_F1_OFFSET]
std %f2, [%l0 + F2_F3_OFFSET]
std %f4, [%l0 + F4_F5_OFFSET]
@@ -101,8 +101,8 @@ SYM(_CPU_Context_restore_fp):
or %l1, %lo(SPARC_PSR_EF_MASK), %l1
or %l0, %l1, %l0
mov %l0, %psr ! **** ENABLE FLOAT ACCESS ****
ld [%i0], %l0
nop; nop; nop; ! Need three nops before EF is
ld [%i0], %l0 ! active due to pipeline delay!!!
ldd [%l0 + FO_F1_OFFSET], %f0
ldd [%l0 + F2_F3_OFFSET], %f2
ldd [%l0 + F4_F5_OFFSET], %f4