replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[Renderscript] Add stack argument reading code for Mipsel 

This commit implements the reading of stack spilled function arguments for little endian MIPS targets.

Committed on behalf of: Dean De Leo <dean@codeplay.com>

llvm-svn: 263130
This commit is contained in:
Aidan Dodds 2016-03-10 17:27:41 +00:00
parent 8433fdbedf
commit 17e07c0ab4
1 changed files with 17 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptRuntime.cpp
View File

@ -184,6 +184,8 @@ GetArgsX86_64(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
4, // eBool,
}};
Error error;
// get the current stack pointer
uint64_t sp = ctx.reg_ctx->GetSP();
// step over the return address
@ -227,7 +229,6 @@ GetArgsX86_64(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
// read the argument from memory
arg.value = 0;
// note: due to little endian layout reading 4 or 8 bytes will give the correct value.
Error error;
size_t read = ctx.process->ReadMemory(sp, &arg.value, size, error);
success = (error.Success() && read==size);
// advance past this argument
@ -237,7 +238,8 @@ GetArgsX86_64(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
if (!success)
{
if (log)
log->Printf("%s - error reading argument: %" PRIu64, __FUNCTION__, uint64_t(i));
log->Printf("%s - error reading argument: %" PRIu64", reason: %s",
__FUNCTION__, uint64_t(i), error.AsCString("n/a"));
return false;
}
}
@ -252,6 +254,8 @@ GetArgsArm(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
Log *log = GetLogIfAllCategoriesSet(LIBLLDB_LOG_LANGUAGE);
Error error;
// get the current stack pointer
uint64_t sp = ctx.reg_ctx->GetSP();
@ -275,7 +279,6 @@ GetArgsArm(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
// clear all 64bits
arg.value = 0;
// read this argument from memory
Error error;
size_t bytes_read = ctx.process->ReadMemory(sp, &arg.value, arg_size, error);
success = (error.Success() && bytes_read == arg_size);
// advance the stack pointer
@ -285,7 +288,8 @@ GetArgsArm(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
if (!success)
{
if (log)
log->Printf("%s - error reading argument: %" PRIu64, __FUNCTION__, uint64_t(i));
log->Printf("%s - error reading argument: %" PRIu64", reason: %s",
__FUNCTION__, uint64_t(i), error.AsCString("n/a"));
return false;
}
}
@ -340,6 +344,11 @@ GetArgsMipsel(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
Log *log = GetLogIfAllCategoriesSet(LIBLLDB_LOG_LANGUAGE);
Error error;
// find offset to arguments on the stack (+16 to skip over a0-a3 shadow space)
uint64_t sp = ctx.reg_ctx->GetSP() + 16;
for (size_t i = 0; i < num_args; ++i)
{
bool success = false;
@ -379,6 +388,8 @@ GetArgsMips64el(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
Log *log = GetLogIfAllCategoriesSet(LIBLLDB_LOG_LANGUAGE);
Error error;
// get the current stack pointer
uint64_t sp = ctx.reg_ctx->GetSP();
@ -402,7 +413,6 @@ GetArgsMips64el(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
// clear all 64bits
arg.value = 0;
// read this argument from memory
Error error;
size_t bytes_read = ctx.process->ReadMemory(sp, &arg.value, arg_size, error);
success = (error.Success() && bytes_read == arg_size);
// advance the stack pointer
@ -412,7 +422,8 @@ GetArgsMips64el(GetArgsCtx &ctx, ArgItem *arg_list, size_t num_args)
if (!success)
{
if (log)
log->Printf("%s - error reading argument: %" PRIu64, __FUNCTION__, uint64_t(i));
log->Printf("%s - error reading argument: %" PRIu64", reason: %s",
__FUNCTION__, uint64_t(i), error.AsCString("n/a"));
return false;
}
}