[Pdbg] [PATCH v4 13/16] libpdbg: Add an api for address translation

[Amitay Isaacs]

Signed-off-by: Amitay Isaacs <amitay at ozlabs.org>
Reviewed-by: Alistair Popple <alistair at popple.id.au>
---
 libpdbg/libpdbg.h | 4 ++++
 libpdbg/target.c  | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/libpdbg/libpdbg.h b/libpdbg/libpdbg.h
index f55acf4..44540e4 100644
--- a/libpdbg/libpdbg.h
+++ b/libpdbg/libpdbg.h
@@ -117,6 +117,10 @@ void pdbg_target_priv_set(struct pdbg_target *target, void *priv);
 struct pdbg_target *pdbg_target_root(void);
 bool pdbg_target_compatible(struct pdbg_target *target, const char *compatible);
 
+/* Translate an address offset for a target to absolute address in address
+ * space of a "base" target.  */
+struct pdbg_target *pdbg_address_absolute(struct pdbg_target *target, uint64_t *addr);
+
 /* Procedures */
 int fsi_read(struct pdbg_target *target, uint32_t addr, uint32_t *val);
 int fsi_write(struct pdbg_target *target, uint32_t addr, uint32_t val);
diff --git a/libpdbg/target.c b/libpdbg/target.c
index 1fc8457..af9199d 100644
--- a/libpdbg/target.c
+++ b/libpdbg/target.c
@@ -36,6 +36,11 @@ static struct pdbg_target *get_class_target_addr(struct pdbg_target *target, con
 	return target;
 }
 
+struct pdbg_target *pdbg_address_absolute(struct pdbg_target *target, uint64_t *addr)
+{
+	return get_class_target_addr(target, "pib", addr);
+}
+
 /* The indirect access code was largely stolen from hw/xscom.c in skiboot */
 #define PIB_IND_MAX_RETRIES 10
 #define PIB_IND_READ PPC_BIT(0)
-- 
2.19.1