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| author | Mole Shang <[email protected]> | 2024-02-17 11:55:33 +0800 |
|---|---|---|
| committer | Mole Shang <[email protected]> | 2024-02-17 12:22:07 +0800 |
| commit | e8e0a7b4c97064eb5e9415726d7e38aaceccd3fd (patch) | |
| tree | fb42ba5be7a8ae608b968266f62fd71fa889a89d /user/uthread_switch.S | |
| parent | a6af72924b115c1177d18d9b1eaba56623e4248b (diff) | |
| parent | d85aec2689c4250d0384904bdc11aa618c726bec (diff) | |
| download | xv6-labs-e8e0a7b4c97064eb5e9415726d7e38aaceccd3fd.tar.gz xv6-labs-e8e0a7b4c97064eb5e9415726d7e38aaceccd3fd.tar.bz2 xv6-labs-e8e0a7b4c97064eb5e9415726d7e38aaceccd3fd.zip | |
Merge branch 'thread' into fs
Conflicts:
.gitignore
Makefile
conf/lab.mk
kernel/param.h
Diffstat (limited to 'user/uthread_switch.S')
| -rw-r--r-- | user/uthread_switch.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/user/uthread_switch.S b/user/uthread_switch.S new file mode 100644 index 0000000..19cc400 --- /dev/null +++ b/user/uthread_switch.S @@ -0,0 +1,39 @@ + .text + + /* + * save the old thread's registers, + * restore the new thread's registers. + */ + + .globl thread_switch +thread_switch: + sd ra, 0(a0) + sd sp, 8(a0) + sd s0, 16(a0) + sd s1, 24(a0) + sd s2, 32(a0) + sd s3, 40(a0) + sd s4, 48(a0) + sd s5, 56(a0) + sd s6, 64(a0) + sd s7, 72(a0) + sd s8, 80(a0) + sd s9, 88(a0) + sd s10, 96(a0) + sd s11, 104(a0) + + ld ra, 0(a1) + ld sp, 8(a1) + ld s0, 16(a1) + ld s1, 24(a1) + ld s2, 32(a1) + ld s3, 40(a1) + ld s4, 48(a1) + ld s5, 56(a1) + ld s6, 64(a1) + ld s7, 72(a1) + ld s8, 80(a1) + ld s9, 88(a1) + ld s10, 96(a1) + ld s11, 104(a1) + ret /* return to ra */ |