sim: switch sim_{read,write} APIs to 64-bit all the time [PR sim/7504]

We've been using SIM_ADDR which has always been 32-bit.  This means
the upper 32-bit address range in 64-bit sims is inaccessible.  Use
64-bit addresses all the time since we want the APIs to be stable
regardless of the active arch backend (which can be 32 or 64-bit).

The length is also 64-bit because it's completely feasible to have
a program that is larger than 4 GiB in size/image/runtime.  Forcing
the caller to manually chunk those accesses up into 4 GiB at a time
doesn't seem useful to anyone.

Bug: https://sourceware.org/PR7504

1 files changed, 4 insertions, 4 deletions

diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index e88e5ed..fdd3f0f 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -329,8 +329,8 @@ sim_fetch_register(SIM_DESC sd, int regno, void *buf, int length)
     return -1;
 }
 
-int
-sim_write (SIM_DESC sd, SIM_ADDR mem, const void *buffer, int length)
+uint64_t
+sim_write (SIM_DESC sd, uint64_t mem, const void *buffer, uint64_t length)
 {
     int i, len;
     const unsigned char *data = buffer;
@@ -341,8 +341,8 @@ sim_write (SIM_DESC sd, SIM_ADDR mem, const void *buffer, int length)
     return length;
 }
 
-int
-sim_read (SIM_DESC sd, SIM_ADDR mem, void *buffer, int length)
+uint64_t
+sim_read (SIM_DESC sd, uint64_t mem, void *buffer, uint64_t length)
 {
     int i, len;
     unsigned char *data = buffer;