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#include "./WASIPrivate.h"
#include "WAVM/Inline/BasicTypes.h"
#include "WAVM/Runtime/Intrinsics.h"
#include "WAVM/Runtime/Runtime.h"
#include "WAVM/WASI/WASIABI.h"
using namespace WAVM;
using namespace WAVM::WASI;
using namespace WAVM::Runtime;
namespace WAVM { namespace WASI {
WAVM_DEFINE_INTRINSIC_MODULE(wasiArgsEnvs)
}}
WAVM_DEFINE_INTRINSIC_FUNCTION(wasiArgsEnvs,
"args_sizes_get",
__wasi_errno_return_t,
wasi_args_sizes_get,
U32 argcAddress,
U32 argBufSizeAddress)
{
TRACE_SYSCALL("args_sizes_get",
"(" WASIADDRESS_FORMAT ", " WASIADDRESS_FORMAT ")",
argcAddress,
argBufSizeAddress);
Process* process = getProcessFromContextRuntimeData(contextRuntimeData);
Uptr numArgBufferBytes = 0;
for(const std::string& arg : process->args) { numArgBufferBytes += arg.size() + 1; }
if(process->args.size() > WASIADDRESS_MAX || numArgBufferBytes > WASIADDRESS_MAX)
{ return TRACE_SYSCALL_RETURN(__WASI_EOVERFLOW); }
memoryRef<WASIAddress>(process->memory, argcAddress) = WASIAddress(process->args.size());
memoryRef<WASIAddress>(process->memory, argBufSizeAddress) = WASIAddress(numArgBufferBytes);
return TRACE_SYSCALL_RETURN(__WASI_ESUCCESS);
}
WAVM_DEFINE_INTRINSIC_FUNCTION(wasiArgsEnvs,
"args_get",
__wasi_errno_return_t,
wasi_args_get,
U32 argvAddress,
U32 argBufAddress)
{
TRACE_SYSCALL(
"args_get", "(" WASIADDRESS_FORMAT ", " WASIADDRESS_FORMAT ")", argvAddress, argBufAddress);
Process* process = getProcessFromContextRuntimeData(contextRuntimeData);
WASIAddress nextArgBufAddress = argBufAddress;
for(Uptr argIndex = 0; argIndex < process->args.size(); ++argIndex)
{
const std::string& arg = process->args[argIndex];
const Uptr numArgBytes = arg.size() + 1;
if(numArgBytes > WASIADDRESS_MAX || nextArgBufAddress > WASIADDRESS_MAX - numArgBytes - 1)
{ return TRACE_SYSCALL_RETURN(__WASI_EOVERFLOW); }
if(numArgBytes > 0)
{
memcpy(memoryArrayPtr<U8>(process->memory, nextArgBufAddress, numArgBytes),
(const U8*)arg.c_str(),
numArgBytes);
}
memoryRef<WASIAddress>(process->memory, argvAddress + argIndex * sizeof(U32))
= WASIAddress(nextArgBufAddress);
nextArgBufAddress += WASIAddress(numArgBytes);
}
return TRACE_SYSCALL_RETURN(__WASI_ESUCCESS);
}
WAVM_DEFINE_INTRINSIC_FUNCTION(wasiArgsEnvs,
"environ_sizes_get",
__wasi_errno_return_t,
wasi_environ_sizes_get,
WASIAddress envCountAddress,
WASIAddress envBufSizeAddress)
{
TRACE_SYSCALL("environ_sizes_get",
"(" WASIADDRESS_FORMAT ", " WASIADDRESS_FORMAT ")",
envCountAddress,
envBufSizeAddress);
Process* process = getProcessFromContextRuntimeData(contextRuntimeData);
Uptr numEnvBufferBytes = 0;
for(const std::string& env : process->envs) { numEnvBufferBytes += env.size() + 1; }
if(process->envs.size() > WASIADDRESS_MAX || numEnvBufferBytes > WASIADDRESS_MAX)
{ return TRACE_SYSCALL_RETURN(__WASI_EOVERFLOW); }
memoryRef<WASIAddress>(process->memory, envCountAddress) = WASIAddress(process->envs.size());
memoryRef<WASIAddress>(process->memory, envBufSizeAddress) = WASIAddress(numEnvBufferBytes);
return TRACE_SYSCALL_RETURN(__WASI_ESUCCESS);
}
WAVM_DEFINE_INTRINSIC_FUNCTION(wasiArgsEnvs,
"environ_get",
__wasi_errno_return_t,
wasi_environ_get,
WASIAddress envvAddress,
WASIAddress envBufAddress)
{
TRACE_SYSCALL("environ_get",
"(" WASIADDRESS_FORMAT ", " WASIADDRESS_FORMAT ")",
envvAddress,
envBufAddress);
Process* process = getProcessFromContextRuntimeData(contextRuntimeData);
WASIAddress nextEnvBufAddress = envBufAddress;
for(Uptr argIndex = 0; argIndex < process->envs.size(); ++argIndex)
{
const std::string& env = process->envs[argIndex];
const Uptr numEnvBytes = env.size() + 1;
if(numEnvBytes > WASIADDRESS_MAX || nextEnvBufAddress > WASIADDRESS_MAX - numEnvBytes - 1)
{ return TRACE_SYSCALL_RETURN(__WASI_EOVERFLOW); }
if(numEnvBytes > 0)
{
memcpy(memoryArrayPtr<U8>(process->memory, nextEnvBufAddress, numEnvBytes),
(const U8*)env.c_str(),
numEnvBytes);
}
memoryRef<WASIAddress>(process->memory, envvAddress + argIndex * sizeof(U32))
= WASIAddress(nextEnvBufAddress);
nextEnvBufAddress += WASIAddress(numEnvBytes);
}
return TRACE_SYSCALL_RETURN(__WASI_ESUCCESS);
}
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