tests/ubpf_jit_x86_64.rs: fix sign of immediates

tests/ubpf_jit_x86_64.rs

@@ -328,7 +328,7 @@ fn test_jit_call_memfrob() {
         //0x4f, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
         //0x95, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
     //];
-    //let mut vm = rbpf::EbpfVmNoData::new(&prog);
+    //let mut vm = rbpf::EbpfVmNoData::new(prog);
     //vm.register_helper(2, helpers::trash_registers);
     //vm.jit_compile();
     //unsafe { assert_eq!(vm.prog_exec_jit(), 0x4321); }
@@ -492,7 +492,7 @@ fn test_jit_err_mod_by_zero_reg() {
 //         0x72, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 //         0x95, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 //     ];
-//     let mut vm = rbpf::EbpfVmNoData::new(&prog);
+//     let mut vm = rbpf::EbpfVmNoData::new(prog);
 //     vm.jit_compile();
 //     unsafe { vm.prog_exec_jit(); }
 // }
@@ -671,12 +671,12 @@ fn test_jit_jset_reg() {
 fn test_jit_jsge_imm() {
     let prog = assemble("
         mov32 r0, 0
-        mov r1, 0xfffffffe
-        jsge r1, 0xffffffff, +5
+        mov r1, -2
+        jsge r1, -1, +5
         jsge r1, 0, +4
         mov32 r0, 1
-        mov r1, 0xffffffff
-        jsge r1, 0xffffffff, +1
+        mov r1, -1
+        jsge r1, -1, +1
         mov32 r0, 2
         exit").unwrap();
     let mut vm = rbpf::EbpfVmNoData::new(&prog);
@@ -688,8 +688,8 @@ fn test_jit_jsge_imm() {
 fn test_jit_jsge_reg() {
     let prog = assemble("
         mov32 r0, 0
-        mov r1, 0xfffffffe
-        mov r2, 0xffffffff
+        mov r1, -2
+        mov r2, -1
         mov32 r3, 0
         jsge r1, r2, +5
         jsge r1, r3, +4
@@ -707,11 +707,11 @@ fn test_jit_jsge_reg() {
 fn test_jit_jsgt_imm() {
     let prog = assemble("
         mov32 r0, 0
-        mov r1, 0xfffffffe
-        jsgt r1, 0xffffffff, +4
+        mov r1, -2
+        jsgt r1, -1, +4
         mov32 r0, 1
         mov32 r1, 0
-        jsgt r1, 0xffffffff, +1
+        jsgt r1, -1, +1
         mov32 r0, 2
         exit").unwrap();
     let mut vm = rbpf::EbpfVmNoData::new(&prog);
@@ -723,8 +723,8 @@ fn test_jit_jsgt_imm() {
 fn test_jit_jsgt_reg() {
     let prog = assemble("
         mov32 r0, 0
-        mov r1, 0xfffffffe
-        mov r2, 0xffffffff
+        mov r1, -2
+        mov r2, -1
         jsgt r1, r2, +4
         mov32 r0, 1
         mov32 r1, 0
@@ -1092,7 +1092,7 @@ fn test_jit_mod32() {
 #[test]
 fn test_jit_mod64() {
     let prog = assemble("
-        mov32 r0, 0xb1858436
+        mov32 r0, -1316649930
         lsh r0, 32
         or r0, 0x100dc5c8
         mov32 r1, 0xdde263e
@@ -1185,7 +1185,7 @@ fn test_jit_mul_loop() {
         jeq r1, 0x0, +4
         mov r0, 0x7
         mul r0, 0x7
-        add r1, 0xffffffff
+        add r1, -1
         jne r1, 0x0, -3
         exit").unwrap();
     let mut vm = rbpf::EbpfVmNoData::new(&prog);
@@ -1360,7 +1360,7 @@ fn test_jit_string_stack() {
         mov r1, 0x79636261
         stxw [r10-16], r1
         mov r1, r10
-        add r1, 0xfffffff8
+        add r1, -8
         mov r2, r1
         call 0x4
         mov r1, r0
@@ -1369,9 +1369,9 @@ fn test_jit_string_stack() {
         rsh r1, 0x20
         jne r1, 0x0, +11
         mov r1, r10
-        add r1, 0xfffffff8
+        add r1, -8
         mov r2, r10
-        add r2, 0xfffffff0
+        add r2, -16
         call 0x4
         mov r1, r0
         lsh r1, 0x20
@@ -1500,7 +1500,7 @@ fn test_jit_stxb_chain() {
 #[test]
 fn test_jit_stxdw() {
     let prog = assemble("
-        mov r2, 0x88776655
+        mov r2, -2005440939
         lsh r2, 32
         or r2, 0x44332211
         stxdw [r1+2], r2