diff options
Diffstat (limited to 'src/thread/loongarch64/clone.s')
| -rw-r--r-- | src/thread/loongarch64/clone.s | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s new file mode 100644 index 00000000..a165b365 --- /dev/null +++ b/src/thread/loongarch64/clone.s @@ -0,0 +1,29 @@ +#__clone(func, stack, flags, arg, ptid, tls, ctid) +# a0, a1, a2, a3, a4, a5, a6 +# sys_clone(flags, stack, ptid, ctid, tls) +# a0, a1, a2, a3, a4 + +.global __clone +.hidden __clone +.type __clone,@function +__clone: + bstrins.d $a1, $zero, 3, 0 #stack to 16 align + # Save function pointer and argument pointer on new thread stack + addi.d $a1, $a1, -16 + st.d $a0, $a1, 0 # save function pointer + st.d $a3, $a1, 8 # save argument pointer + or $a0, $a2, $zero + or $a2, $a4, $zero + or $a3, $a6, $zero + or $a4, $a5, $zero + ori $a7, $zero, 220 + syscall 0 # call clone + + beqz $a0, 1f # whether child process + jirl $zero, $ra, 0 # parent process return +1: + ld.d $t8, $sp, 0 # function pointer + ld.d $a0, $sp, 8 # argument pointer + jirl $ra, $t8, 0 # call the user's function + ori $a7, $zero, 93 + syscall 0 # child process exit |