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EVM-C: pass callback argument explicitly by pointer

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We try to avoid C ABI complex rules like passing structs by value to increase portability.
This commit is contained in:
Paweł Bylica 2016-12-22 12:10:31 +01:00
parent 3d2e365661
commit 575337b449
2 changed files with 16 additions and 16 deletions
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22
examples/capi.c
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@ -16,16 +16,16 @@ struct evm_uint160be address(struct evm_env* env)
return ret;
}
union evm_variant query(struct evm_env* env,
enum evm_query_key key,
union evm_variant arg) {
static union evm_variant query(struct evm_env* env,
enum evm_query_key key,
const union evm_variant* arg) {
union evm_variant result;
printf("EVM-C: QUERY %d\n", key);
switch (key) {
case EVM_GAS_LIMIT: result.int64 = 314; break;
case EVM_BALANCE:
result.uint256be = balance(env, arg.address);
result.uint256be = balance(env, arg->address);
break;
case EVM_ADDRESS:
@ -37,20 +37,20 @@ union evm_variant query(struct evm_env* env,
return result;
}
void update(struct evm_env* env,
enum evm_update_key key,
union evm_variant arg1,
union evm_variant arg2)
static void update(struct evm_env* env,
enum evm_update_key key,
const union evm_variant* arg1,
const union evm_variant* arg2)
{
printf("EVM-C: UPDATE %d\n", key);
}
int64_t call(
static int64_t call(
struct evm_env* _opaqueEnv,
enum evm_call_kind _kind,
int64_t _gas,
struct evm_uint160be _address,
struct evm_uint256be _value,
const struct evm_uint160be* _address,
const struct evm_uint256be* _value,
uint8_t const* _inputData,
size_t _inputSize,
uint8_t* _outputData,

10
include/evm.h
View File

@ -231,7 +231,7 @@ union evm_variant {
///
typedef union evm_variant (*evm_query_fn)(struct evm_env* env,
enum evm_query_key key,
union evm_variant arg);
const union evm_variant* arg);
/// The update callback key.
enum evm_update_key {
@ -269,8 +269,8 @@ enum evm_update_key {
/// @param arg2 n/a
typedef void (*evm_update_fn)(struct evm_env* env,
enum evm_update_key key,
union evm_variant arg1,
union evm_variant arg2);
const union evm_variant* arg1,
const union evm_variant* arg2);
/// The kind of call-like instruction.
enum evm_call_kind {
@ -308,8 +308,8 @@ typedef int64_t (*evm_call_fn)(
struct evm_env* env,
enum evm_call_kind kind,
int64_t gas,
struct evm_uint160be address,
struct evm_uint256be value,
const struct evm_uint160be* address,
const struct evm_uint256be* value,
uint8_t const* input,
size_t input_size,
uint8_t* output,