Update lightrec 20220910 (#686)

[pcsx_rearmed.git] / deps / lightning / lib / jit_x86-cpu.c

diff --git a/deps/lightning/lib/jit_x86-cpu.c b/deps/lightning/lib/jit_x86-cpu.c
index 81534f0..0d8affe 100644 (file)
--- a/deps/lightning/lib/jit_x86-cpu.c
+++ b/deps/lightning/lib/jit_x86-cpu.c
@@ -369,6 +369,11 @@ static void _movcr_u(jit_state_t*,jit_int32_t,jit_int32_t);
 static void _movsr(jit_state_t*,jit_int32_t,jit_int32_t);
 #  define movsr_u(r0, r1)              _movsr_u(_jit, r0, r1)
 static void _movsr_u(jit_state_t*,jit_int32_t,jit_int32_t);
+#  define casx(r0, r1, r2, r3, i0)     _casx(_jit, r0, r1, r2, r3, i0)
+static void _casx(jit_state_t *_jit,jit_int32_t,jit_int32_t,
+                 jit_int32_t,jit_int32_t,jit_word_t);
+#define casr(r0, r1, r2, r3)           casx(r0, r1, r2, r3, 0)
+#define casi(r0, i0, r1, r2)           casx(r0, _NOREG, r1, r2, i0)
 #define movnr(r0, r1, r2)              _movnr(_jit, r0, r1, r2)
 static void _movnr(jit_state_t*, jit_int32_t, jit_int32_t, jit_int32_t);
 #define movzr(r0, r1, r2)              _movzr(_jit, r0, r1, r2)
@@ -2218,6 +2223,66 @@ _movsr_u(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
     mrm(0x03, r7(r0), r7(r1));
 }
 
+static void
+_casx(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1,
+      jit_int32_t r2, jit_int32_t r3, jit_word_t i0)
+{
+    jit_int32_t                save_rax, restore_rax;
+    jit_int32_t                ascasr_reg, ascasr_use;
+    if (r0 != _RAX_REGNO) {            /* result not in %rax */
+       if (r2 != _RAX_REGNO) {         /* old value not in %rax */
+           save_rax = jit_get_reg(jit_class_gpr);
+           movr(rn(save_rax), _RAX_REGNO);
+           restore_rax = 1;
+       }
+       else
+           restore_rax = 0;
+    }
+    else
+       restore_rax = 0;
+    if (r2 != _RAX_REGNO)
+       movr(_RAX_REGNO, r2);
+    if (r1 == _NOREG) {                        /* using immediate address */
+       if (!can_sign_extend_int_p(i0)) {
+           ascasr_reg = jit_get_reg(jit_class_gpr);
+           if (ascasr_reg == _RAX) {
+               ascasr_reg = jit_get_reg(jit_class_gpr);
+               jit_unget_reg(_RAX);
+           }
+           ascasr_use = 1;
+           movi(rn(ascasr_reg), i0);
+       }
+       else
+           ascasr_use = 0;
+    }
+    else
+       ascasr_use = 0;
+    ic(0xf0);          /* lock */
+    if (ascasr_use)
+       rex(0, WIDE, r3, _NOREG, rn(ascasr_reg));
+    else
+       rex(0, WIDE, r3, _NOREG, r1);
+    ic(0x0f);
+    ic(0xb1);
+    if (r1 != _NOREG)                  /* casr */
+       rx(r3, 0, r1, _NOREG, _SCL1);
+    else {                             /* casi */
+       if (ascasr_use)
+           rx(r3, 0, rn(ascasr_reg), _NOREG, _SCL1);   /* address in reg */
+       else
+           rx(r3, i0, _NOREG, _NOREG, _SCL1);          /* address in offset */
+    }
+    cc(X86_CC_E, r0);
+    if (r0 != _RAX_REGNO)
+       movr(r0, _RAX_REGNO);
+    if (restore_rax) {
+       movr(_RAX_REGNO, rn(save_rax));
+       jit_unget_reg(save_rax);
+    }
+    if (ascasr_use)
+       jit_unget_reg(ascasr_reg);
+}
+
 static void
 _movnr(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1, jit_int32_t r2)
 {