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[PATCH 1/3] tcg: Convert typecode_to_ffi from array to function
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH 1/3] tcg: Convert typecode_to_ffi from array to function |
Date: |
Tue, 22 Nov 2022 19:08:02 +0100 |
In the unlikely case of invalid typecode mask, the function
will abort instead of returning a NULL pointer.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221111074101.2069454-27-richard.henderson@linaro.org>
[PMD: Split from bigger patch]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
tcg/tcg.c | 30 ++++++++++++++++++++----------
1 file changed, 20 insertions(+), 10 deletions(-)
diff --git a/tcg/tcg.c b/tcg/tcg.c
index cabc397a38..8aa6fc9a25 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -554,14 +554,24 @@ static GHashTable *helper_table;
#ifdef CONFIG_TCG_INTERPRETER
static GHashTable *ffi_table;
-static ffi_type * const typecode_to_ffi[8] = {
- [dh_typecode_void] = &ffi_type_void,
- [dh_typecode_i32] = &ffi_type_uint32,
- [dh_typecode_s32] = &ffi_type_sint32,
- [dh_typecode_i64] = &ffi_type_uint64,
- [dh_typecode_s64] = &ffi_type_sint64,
- [dh_typecode_ptr] = &ffi_type_pointer,
-};
+static ffi_type *typecode_to_ffi(int argmask)
+{
+ switch (argmask) {
+ case dh_typecode_void:
+ return &ffi_type_void;
+ case dh_typecode_i32:
+ return &ffi_type_uint32;
+ case dh_typecode_s32:
+ return &ffi_type_sint32;
+ case dh_typecode_i64:
+ return &ffi_type_uint64;
+ case dh_typecode_s64:
+ return &ffi_type_sint64;
+ case dh_typecode_ptr:
+ return &ffi_type_pointer;
+ }
+ g_assert_not_reached();
+}
#endif
typedef struct TCGCumulativeArgs {
@@ -764,14 +774,14 @@ static void tcg_context_init(unsigned max_cpus)
nargs = DIV_ROUND_UP(nargs, 3);
ca = g_malloc0(sizeof(*ca) + nargs * sizeof(ffi_type *));
- ca->cif.rtype = typecode_to_ffi[typemask & 7];
+ ca->cif.rtype = typecode_to_ffi(typemask & 7);
ca->cif.nargs = nargs;
if (nargs != 0) {
ca->cif.arg_types = ca->args;
for (int j = 0; j < nargs; ++j) {
int typecode = extract32(typemask, (j + 1) * 3, 3);
- ca->args[j] = typecode_to_ffi[typecode];
+ ca->args[j] = typecode_to_ffi(typecode);
}
}
--
2.38.1
- Re: [PATCH for-8.0 v3 14/45] tcg: Introduce tcg_type_size, (continued)
[PATCH for-8.0 v3 17/45] tcg: Replace TCG_TARGET_EXTEND_ARGS with TCG_TARGET_CALL_ARG_I32, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 20/45] accel/tcg/plugin: Avoid duplicate copy in copy_call, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 23/45] tcg: Vary the allocation size for TCGOp, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 26/45] tcg: Move ffi_cif pointer into TCGHelperInfo, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 27/45] tcg/aarch64: Merge tcg_out_callr into tcg_out_call, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 24/45] tcg: Use output_pref wrapper function, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 25/45] tcg: Reorg function calls, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 28/45] tcg: Add TCGHelperInfo argument to tcg_out_call, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 31/45] tcg: Allocate objects contiguously in temp_allocate_frame, Richard Henderson, 2022/11/11
[PATCH for-8.0 v3 32/45] tcg: Introduce tcg_out_addi_ptr, Richard Henderson, 2022/11/11