rt: Remove upcall_shared_malloc/free/realloc

4 files changed, 3 insertions, 86 deletions

diff --git a/src/rt/rust_task.cpp b/src/rt/rust_task.cpp
index 2331cccd590..5299de0ed34 100644
--- a/src/rt/rust_task.cpp
+++ b/src/rt/rust_task.cpp
@@ -7,7 +7,6 @@
 
 #include "rust_task.h"
 #include "rust_cc.h"
-#include "rust_upcall.h"
 #include "rust_env.h"
 #include "rust_port.h"
 
@@ -130,6 +129,8 @@ cleanup_task(cleanup_args *args) {
     }
 }
 
+extern "C" CDECL void upcall_exchange_free(void *ptr);
+
 // This runs on the Rust stack
 void task_start_wrapper(spawn_args *a)
 {
@@ -161,7 +162,7 @@ void task_start_wrapper(spawn_args *a)
         // free the environment (which should be a unique closure).
         const type_desc *td = env->td;
         td->drop_glue(NULL, NULL, td->first_param, box_body(env));
-        upcall_shared_free(env);
+        upcall_exchange_free(env);
     }
 
     // The cleanup work needs lots of stack
diff --git a/src/rt/rust_upcall.cpp b/src/rt/rust_upcall.cpp
index 667a511debf..01606b37903 100644
--- a/src/rt/rust_upcall.cpp
+++ b/src/rt/rust_upcall.cpp
@@ -318,81 +318,6 @@ upcall_validate_box(rust_opaque_box* ptr) {
     }
 }
 
-/**********************************************************************
- * Allocate an object in the exchange heap.
- */
-
-struct s_shared_malloc_args {
-    uintptr_t retval;
-    size_t nbytes;
-};
-
-extern "C" CDECL void
-upcall_s_shared_malloc(s_shared_malloc_args *args) {
-    rust_task *task = rust_get_current_task();
-    LOG_UPCALL_ENTRY(task);
-
-    LOG(task, mem, "upcall shared_malloc(%" PRIdPTR ")", args->nbytes);
-    void *p = task->kernel->malloc(args->nbytes, "shared malloc");
-    memset(p, '\0', args->nbytes);
-    LOG(task, mem, "upcall shared_malloc(%" PRIdPTR ") = 0x%" PRIxPTR,
-        args->nbytes, (uintptr_t)p);
-    args->retval = (uintptr_t) p;
-}
-
-extern "C" CDECL uintptr_t
-upcall_shared_malloc(size_t nbytes) {
-    s_shared_malloc_args args = {0, nbytes};
-    UPCALL_SWITCH_STACK(&args, upcall_s_shared_malloc);
-    return args.retval;
-}
-
-/**********************************************************************
- * Called whenever an object in the exchange heap is freed.
- */
-
-struct s_shared_free_args {
-    void *ptr;
-};
-
-extern "C" CDECL void
-upcall_s_shared_free(s_shared_free_args *args) {
-    rust_task *task = rust_get_current_task();
-    LOG_UPCALL_ENTRY(task);
-
-    rust_sched_loop *sched_loop = task->sched_loop;
-    DLOG(sched_loop, mem,
-             "upcall shared_free(0x%" PRIxPTR")",
-             (uintptr_t)args->ptr);
-    task->kernel->free(args->ptr);
-}
-
-extern "C" CDECL void
-upcall_shared_free(void* ptr) {
-    s_shared_free_args args = {ptr};
-    UPCALL_SWITCH_STACK(&args, upcall_s_shared_free);
-}
-
-struct s_shared_realloc_args {
-    void *retval;
-    void *ptr;
-    size_t size;
-};
-
-extern "C" CDECL void
-upcall_s_shared_realloc(s_shared_realloc_args *args) {
-    rust_task *task = rust_get_current_task();
-    LOG_UPCALL_ENTRY(task);
-    args->retval = task->kernel->realloc(args->ptr, args->size);
-}
-
-extern "C" CDECL void *
-upcall_shared_realloc(void *ptr, size_t size) {
-    s_shared_realloc_args args = {NULL, ptr, size};
-    UPCALL_SWITCH_STACK(&args, upcall_s_shared_realloc);
-    return args.retval;
-}
-
 /**********************************************************************/
 
 struct s_str_new_uniq_args {
diff --git a/src/rt/rust_upcall.h b/src/rt/rust_upcall.h
index 0030ef19b36..b2b2db20674 100644
--- a/src/rt/rust_upcall.h
+++ b/src/rt/rust_upcall.h
@@ -1,9 +1,4 @@
-
 #ifndef RUST_UPCALL_H
 #define RUST_UPCALL_H
 
-// Upcalls used from C code on occasion:
-
-extern "C" CDECL void upcall_shared_free(void* ptr);
-
 #endif
diff --git a/src/rt/rustrt.def.in b/src/rt/rustrt.def.in
index 7c04902de57..8a627795850 100644
--- a/src/rt/rustrt.def.in
+++ b/src/rt/rustrt.def.in
@@ -74,10 +74,6 @@ upcall_validate_box
 upcall_log_type
 upcall_malloc
 upcall_rust_personality
-upcall_s_shared_malloc
-upcall_shared_malloc
-upcall_shared_free
-upcall_shared_realloc
 upcall_vec_grow
 upcall_str_new
 upcall_str_new_uniq