aboutsummaryrefslogtreecommitdiff
path: root/src/bytecode
diff options
context:
space:
mode:
Diffstat (limited to 'src/bytecode')
-rw-r--r--src/bytecode/bytecode.c44
1 files changed, 42 insertions, 2 deletions
diff --git a/src/bytecode/bytecode.c b/src/bytecode/bytecode.c
index ffcd2e0..d670407 100644
--- a/src/bytecode/bytecode.c
+++ b/src/bytecode/bytecode.c
@@ -59,6 +59,20 @@ static CHECK_RESULT usize ssa_extract_jump(u8 *instruction_data, SsaInsJump *res
}
static void add_intermediates(BytecodeCompilerContext *self) {
+ /*doc(Bytecode intermediates)
+ # Intermediates layout
+ |Type |Field |Description |
+ |------------|------------------|-------------------------------------------------------------------------------|
+ |u32 |Intermediates size|The size of the intermediates section, in bytes. |
+ |Intermediate|Intermediate data |Multiple intermediates, where the total size is defined by @Intermediates size.|
+
+ # Intermediate
+ |Type|Field|Description |
+ |----|-----|----------------------------------------------------|
+ |u8 |Type |The type of the number. 0=integer, 1=float. |
+ |u64 |Value|The type of the value depends on the value of @Type.|
+ */
+
Ssa *ssa;
Buffer *instructions;
SsaNumber *intermediate;
@@ -81,6 +95,21 @@ static void add_intermediates(BytecodeCompilerContext *self) {
}
void add_strings(BytecodeCompilerContext *self) {
+ /*doc(Bytecode strings)
+ # Strings layout
+ |Type |Field |Description |
+ |-------|-----------------|------------------------------------------------------------------|
+ |u16 |Number of strings|The number of strings. |
+ |u32 |Strings size |The size of the strings section, in bytes. |
+ |String*|Strings data |Multiple strings, where the total size is defined by @Strings size|
+
+ # String
+ |Type|Field|Description |
+ |----|----|----------------------------------------------------------------------------------------|
+ |u16 |Size|The size of the string, in bytes. |
+ |u8* |Data|The data of the string, where the size is defined by @Size. Strings are null-terminated.|
+ */
+
Ssa *ssa;
Buffer *instructions;
BufferView *string;
@@ -100,7 +129,7 @@ void add_strings(BytecodeCompilerContext *self) {
strings_size = 0;
for(; string != strings_end; ++string) {
- strings_size += sizeof(u16) + string->size;
+ strings_size += sizeof(u16) + string->size + 1; /* +1 for null-termination of string */
}
string = buffer_begin(&ssa->strings);
@@ -108,8 +137,10 @@ void add_strings(BytecodeCompilerContext *self) {
throw_if_error(buffer_append(instructions, &num_strings, sizeof(u16)));
throw_if_error(buffer_append(instructions, &strings_size, sizeof(u32)));
for(; string != strings_end; ++string) {
+ char null_s = '\0';
throw_if_error(buffer_append(instructions, &string->size, sizeof(u16)));
throw_if_error(buffer_append(instructions, string->data, string->size));
+ throw_if_error(buffer_append(instructions, &null_s, sizeof(char)));
}
}
@@ -223,6 +254,14 @@ static const char* lhs_expr_get_c_name(BytecodeCompilerContext *self, LhsExpr *l
#endif
static void add_instructions(BytecodeCompilerContext *self) {
+ /*doc(Bytecode instructions)
+ # Instructions layout
+ |Type |Field |Description |
+ |------------|-----------------|---------------------------------------------------------------------------|
+ |u32 |Instructions size|The size of the instructions section, in bytes. |
+ |Instruction*|Instructions data|The instructions data. Each instructions begins with an opcode, see #Opcode|
+ */
+
Ssa *ssa;
u8 *instruction;
u8 *instructions_end;
@@ -486,7 +525,8 @@ static void add_instructions(BytecodeCompilerContext *self) {
/* Prepend instructions with its size */
{
u32 instructions_size;
- instructions_size = self->bytecode.data.size - num_instructions_index - sizeof(instructions_size); /* Remove the count itself from the size of the instructions size */
+ /* -sizeof to Remove the count itself from the size of the instructions size */
+ instructions_size = self->bytecode.data.size - num_instructions_index - sizeof(instructions_size);
am_memcpy(&self->bytecode.data.data[num_instructions_index], &instructions_size, sizeof(instructions_size));
}