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stage1: Fix serialization of ZigValue on BE machines

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This commit is contained in:
LemonBoy 2020-04-04 14:06:32 +02:00
parent e89c42655c
commit 084c62f5d1
1 changed files with 8 additions and 2 deletions
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10
src/ir.cpp
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@ -28417,6 +28417,7 @@ static Error buf_read_value_bytes(IrAnalyze *ira, CodeGen *codegen, AstNode *sou
}
BigInt big_int;
bigint_read_twos_complement(&big_int, buf + offset, big_int_byte_count * 8, is_big_endian, false);
uint64_t bit_offset = 0;
while (src_i < src_field_count) {
TypeStructField *field = val->type->data.structure.fields[src_i];
src_assert(field->gen_index != SIZE_MAX, source_node);
@ -28429,7 +28430,11 @@ static Error buf_read_value_bytes(IrAnalyze *ira, CodeGen *codegen, AstNode *sou
BigInt child_val;
if (is_big_endian) {
zig_panic("TODO buf_read_value_bytes packed struct big endian");
BigInt packed_bits_size_bi;
bigint_init_unsigned(&packed_bits_size_bi, big_int_byte_count * 8 - packed_bits_size - bit_offset);
BigInt tmp;
bigint_shr(&tmp, &big_int, &packed_bits_size_bi);
bigint_truncate(&child_val, &tmp, packed_bits_size, false);
} else {
BigInt packed_bits_size_bi;
bigint_init_unsigned(&packed_bits_size_bi, packed_bits_size);
@ -28439,11 +28444,12 @@ static Error buf_read_value_bytes(IrAnalyze *ira, CodeGen *codegen, AstNode *sou
big_int = tmp;
}
bigint_write_twos_complement(&child_val, child_buf, big_int_byte_count * 8, is_big_endian);
bigint_write_twos_complement(&child_val, child_buf, packed_bits_size, is_big_endian);
if ((err = buf_read_value_bytes(ira, codegen, source_node, child_buf, field_val))) {
return err;
}
bit_offset += packed_bits_size;
src_i += 1;
}
offset += big_int_byte_count;