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authorRich Felker <dalias@aerifal.cx>2012-07-11 11:35:27 -0400
committerRich Felker <dalias@aerifal.cx>2012-07-11 11:35:27 -0400
commit5c94367a9b0f1c1dd0deadb0f320242b59f844bb (patch)
treeca74a84a1939322c1f043075d7cfc69af2635d36
parentd0bfbd9dca27e3053534bbf70b36e229d0c0cf21 (diff)
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first attempt at making threads work on mips
-rw-r--r--src/thread/mips/__unmapself.s9
-rw-r--r--src/thread/mips/clone.s27
-rw-r--r--src/thread/mips/syscall_cp.s31
3 files changed, 67 insertions, 0 deletions
diff --git a/src/thread/mips/__unmapself.s b/src/thread/mips/__unmapself.s
new file mode 100644
index 00000000..9aa03712
--- /dev/null
+++ b/src/thread/mips/__unmapself.s
@@ -0,0 +1,9 @@
+.set noreorder
+.global __unmapself
+.type __unmapself,@function
+__unmapself:
+ li $2, 4091
+ syscall
+ li $4, 0
+ li $2, 4001
+ syscall
diff --git a/src/thread/mips/clone.s b/src/thread/mips/clone.s
new file mode 100644
index 00000000..09a1a83f
--- /dev/null
+++ b/src/thread/mips/clone.s
@@ -0,0 +1,27 @@
+.set noreorder
+.global __clone
+.type __clone,@function
+__clone:
+ # Save function pointer and argument pointer
+ move $25, $4
+ move $8, $7
+ # Shuffle (fn,sp,fl,arg,ptid,tls,ctid) to (sp,fl,ptid,tls,ctid)
+ move $4, $5
+ move $5, $6
+ lw $6, 16($sp)
+ lw $7, 20($sp)
+ lw $9, 24($sp)
+ sw $9, 16($sp)
+ li $2, 4120
+ syscall
+ beq $7, $0, 1f
+ nop
+ jr $ra
+ subu $2, $0, $2
+1: beq $2, $0, 1f
+ nop
+ jr $ra
+ nop
+1: move $4, $8
+ jr $25
+ nop
diff --git a/src/thread/mips/syscall_cp.s b/src/thread/mips/syscall_cp.s
new file mode 100644
index 00000000..9a796bd6
--- /dev/null
+++ b/src/thread/mips/syscall_cp.s
@@ -0,0 +1,31 @@
+.set noreorder
+
+.global __syscall_cp_asm
+.type __syscall_cp_asm,@function
+__syscall_cp_asm:
+.global __cp_begin
+__cp_begin:
+ lw $4, 0($4)
+ bne $4, $0, 2f
+ move $10, $5
+ move $4, $6
+ move $5, $7
+ lw $6, 16($sp)
+ lw $7, 20($sp)
+ lw $8, 24($sp)
+ lw $9, 28($sp)
+ subu $sp, $sp, 32
+ sw $8, 16($sp)
+ sw $9, 20($sp)
+ move $2, $10
+ syscall
+.global __cp_end
+__cp_end:
+ beq $7, $0, 1f
+ addu $sp, $sp, 32
+ subu $2, $0, $2
+1: jr $ra
+ nop
+2: lw $25, %call16(__cancel)($gp)
+ jr $25
+ nop