Regcache: Add function to request one specific register

lightrec_alloc_reg() can now be used to request one specific Lightning register. Signed-off-by: Paul Cercueil <paul@crapouillou.net>
pcercuei · Sep 26, 2019 · 627b913 · 627b913
1 parent 1f4d72e
commit 627b913
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diff --git a/regcache.c b/regcache.c
@@ -167,6 +167,16 @@ void lightrec_unload_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg)
 			lightning_reg_to_lightrec(cache, jit_reg), jit_reg);
 }
 
+u8 lightrec_alloc_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg)
+{
+	struct native_register *reg = lightning_reg_to_lightrec(cache, jit_reg);
+
+	lightrec_unload_nreg(cache, _jit, reg, jit_reg);
+
+	reg->used = true;
+	return jit_reg;
+}
+
 u8 lightrec_alloc_reg_temp(struct regcache *cache, jit_state_t *_jit)
 {
 	u8 jit_reg;

diff --git a/regcache.h b/regcache.h
@@ -32,6 +32,7 @@ struct register_value {
 struct native_register;
 struct regcache;
 
+u8 lightrec_alloc_reg(struct regcache *cache, jit_state_t *_jit, u8 jit_reg);
 u8 lightrec_alloc_reg_temp(struct regcache *cache, jit_state_t *_jit);
 u8 lightrec_alloc_reg_out(struct regcache *cache, jit_state_t *_jit, u8 reg);
 u8 lightrec_alloc_reg_in(struct regcache *cache, jit_state_t *_jit, u8 reg);