address PR comments

src/ballet/sbpf/fd_sbpf_loader.h

@@ -186,7 +186,7 @@ fd_sbpf_program_new( void *                     prog_mem,
    https://github.com/solana-labs/rbpf/blob/v0.3.0/src/vm.rs#L198 
 
    Solana/Agave equivalent:
-   https://github.com/solana-labs/rbpf/blob/main/src/elf.rs#L361
+   https://github.com/solana-labs/rbpf/blob/v0.8.0/src/elf.rs#L361
    */
 
 int

src/flamenco/runtime/tests/fd_exec_instr_test.h

@@ -71,6 +71,13 @@ fd_exec_instr_test_run( fd_exec_instr_test_runner_t *        runner,
                         void *                               output_buf,
                         ulong                                output_bufsz );
 
+/* Loads an ELF binary (in input->elf.data()). 
+   output_buf points to a memory region of output_bufsz bytes where the
+   result is allocated into. Upon a successful load, the contents of
+   fd_sbpf_program_t are wrapped in *output (backed by output_buf)
+   and returns number of bytes allocated at output_buf. 
+   Any failure to load the ELF binary results in a 0UL return value.
+   */
 ulong
 fd_sbpf_program_load_test_run( fd_exec_test_elf_loader_ctx_t const * input,
                                fd_exec_test_elf_loader_effects_t ** output,

src/flamenco/runtime/tests/fd_exec_test.proto

@@ -123,6 +123,7 @@ message ELFLoaderCtx {
 }
 
 // Captures the results of a elf binary load.
+// Structurally similar to fd_sbpf_program_t
 message ELFLoaderEffects {
     // loaded program rodata
     bytes rodata = 1