diff options
author | Eric Biederman <ebiederm@xmission.com> | 2003-06-24 14:27:37 +0000 |
---|---|---|
committer | Eric Biederman <ebiederm@xmission.com> | 2003-06-24 14:27:37 +0000 |
commit | 03b59864dfd3d1d06b056fcf530da8ca328fa99c (patch) | |
tree | 3540548a39fe491007ba8dd7f09aa6cb628f7b1e /util/romcc/romcc.c | |
parent | 432cc669840d110f671fe9fbf36a3a3477995b89 (diff) | |
download | coreboot-03b59864dfd3d1d06b056fcf530da8ca328fa99c.tar.xz |
- A few more fixes to get pointers to structures working correctly.
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@901 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/romcc/romcc.c')
-rw-r--r-- | util/romcc/romcc.c | 120 |
1 files changed, 65 insertions, 55 deletions
diff --git a/util/romcc/romcc.c b/util/romcc/romcc.c index af9c5552c6..feebdbdab4 100644 --- a/util/romcc/romcc.c +++ b/util/romcc/romcc.c @@ -3932,6 +3932,15 @@ static size_t align_of(struct compile_state *state, struct type *type) return align; } +static size_t needed_padding(size_t offset, size_t align) +{ + size_t padding; + padding = 0; + if (offset % align) { + padding = align - (offset % align); + } + return padding; +} static size_t size_of(struct compile_state *state, struct type *type) { size_t size; @@ -3961,16 +3970,16 @@ static size_t size_of(struct compile_state *state, struct type *type) case TYPE_PRODUCT: { size_t align, pad; - size = size_of(state, type->left); - while((type->right->type & TYPE_MASK) == TYPE_PRODUCT) { - type = type->right; + size = 0; + while((type->type & TYPE_MASK) == TYPE_PRODUCT) { align = align_of(state, type->left); - pad = align - (size % align); + pad = needed_padding(size, align); size = size + pad + size_of(state, type->left); + type = type->right; } - align = align_of(state, type->right); - pad = align - (size % align); - size = size + pad + sizeof(type->right); + align = align_of(state, type); + pad = needed_padding(size, align); + size = size + pad + sizeof(type); break; } case TYPE_OVERLAP: @@ -4001,26 +4010,26 @@ static size_t size_of(struct compile_state *state, struct type *type) static size_t field_offset(struct compile_state *state, struct type *type, struct hash_entry *field) { - size_t size, align, pad; + size_t size, align; if ((type->type & TYPE_MASK) != TYPE_STRUCT) { internal_error(state, 0, "field_offset only works on structures"); } size = 0; type = type->left; while((type->type & TYPE_MASK) == TYPE_PRODUCT) { + align = align_of(state, type->left); + size += needed_padding(size, align); if (type->left->field_ident == field) { type = type->left; break; } size += size_of(state, type->left); type = type->right; - align = align_of(state, type); - pad = align - (size % align); - size += pad; } + align = align_of(state, type); + size += needed_padding(size, align); if (type->field_ident != field) { - internal_error(state, 0, "field_offset: member %s not present", - field->name); + error(state, 0, "member %s not present", field->name); } return size; } @@ -4040,8 +4049,34 @@ static struct type *field_type(struct compile_state *state, type = type->right; } if (type->field_ident != field) { - internal_error(state, 0, "field_type: member %s not present", - field->name); + error(state, 0, "member %s not present", field->name); + } + return type; +} + +static struct type *next_field(struct compile_state *state, + struct type *type, struct type *prev_member) +{ + if ((type->type & TYPE_MASK) != TYPE_STRUCT) { + internal_error(state, 0, "next_field only works on structures"); + } + type = type->left; + while((type->type & TYPE_MASK) == TYPE_PRODUCT) { + if (!prev_member) { + type = type->left; + break; + } + if (type->left == prev_member) { + prev_member = 0; + } + type = type->right; + } + if (type == prev_member) { + prev_member = 0; + } + if (prev_member) { + internal_error(state, 0, "prev_member %s not present", + prev_member->field_ident->name); } return type; } @@ -4494,17 +4529,7 @@ static struct triple *deref_field( error(state, 0, "request for member %s in something not a struct or union", field->name); } - member = type->left; - while((member->type & TYPE_MASK) == TYPE_PRODUCT) { - if (member->left->field_ident == field) { - member = member->left; - break; - } - member = member->right; - } - if (member->field_ident != field) { - error(state, 0, "%s is not a member", field->name); - } + member = field_type(state, type, field); if ((type->type & STOR_MASK) == STOR_PERM) { /* Do the pointer arithmetic to get a deref the field */ ulong_t offset; @@ -4514,8 +4539,7 @@ static struct triple *deref_field( } else { /* Find the variable for the field I want. */ - result = triple(state, OP_DOT, - field_type(state, type, field), expr, 0); + result = triple(state, OP_DOT, member, expr, 0); result->u.field = field; } return result; @@ -4797,9 +4821,6 @@ static int expr_depth(struct compile_state *state, struct triple *ins) static struct triple *flatten( struct compile_state *state, struct triple *first, struct triple *ptr); -static struct triple *mk_add_expr( - struct compile_state *state, struct triple *left, struct triple *right); - static struct triple *flatten_generic( struct compile_state *state, struct triple *first, struct triple *ptr) { @@ -5156,9 +5177,12 @@ static struct triple *flatten( struct triple *base; base = RHS(ptr, 0); if (base->op == OP_DEREF) { + struct triple *left; ulong_t offset; offset = field_offset(state, base->type, ptr->u.field); - ptr = mk_add_expr(state, RHS(base, 0), + left = RHS(base, 0); + ptr = triple(state, OP_ADD, left->type, + read_expr(state, left), int_const(state, &ulong_type, offset)); free_triple(state, base); } @@ -8815,28 +8839,14 @@ static struct field_info designator(struct compile_state *state, struct type *ty case TOK_DOT: { struct hash_entry *field; - struct type *member; if ((type->type & TYPE_MASK) != TYPE_STRUCT) { error(state, 0, "Struct designator not in struct initializer"); } eat(state, TOK_DOT); eat(state, TOK_IDENT); field = state->token[0].ident; - info.offset = 0; - member = type->left; - while((member->type & TYPE_MASK) == TYPE_PRODUCT) { - if (member->left->field_ident == field) { - member = member->left; - break; - } - info.offset += size_of(state, member->left); - member = member->right; - } - if (member->field_ident != field) { - error(state, 0, "%s is not a member", - field->name); - } - info.type = member; + info.offset = field_offset(state, type, field); + info.type = field_type(state, type, field); break; } default: @@ -8866,6 +8876,9 @@ static struct triple *initializer( } info.offset = 0; info.type = type->left; + if ((type->type & TYPE_MASK) == TYPE_STRUCT) { + info.type = next_field(state, type, 0); + } if (type->elements == ELEMENT_COUNT_UNSPECIFIED) { max_offset = 0; } else { @@ -8889,9 +8902,6 @@ static struct triple *initializer( error(state, 0, "element beyond bounds"); } value_type = info.type; - if ((value_type->type & TYPE_MASK) == TYPE_PRODUCT) { - value_type = type->left; - } value = eval_const_expr(state, initializer(state, value_type)); value_size = size_of(state, value_type); if (((type->type & TYPE_MASK) == TYPE_ARRAY) && @@ -8920,8 +8930,6 @@ static struct triple *initializer( *((uint32_t *)dest) = value->u.cval & 0xffffffff; } else { - fprintf(stderr, "%d %d\n", - value->op, value_size); internal_error(state, 0, "unhandled constant initializer"); } free_triple(state, value); @@ -8930,8 +8938,10 @@ static struct triple *initializer( comma = 1; } info.offset += value_size; - if ((info.type->type & TYPE_MASK) == TYPE_PRODUCT) { - info.type = info.type->right; + if ((type->type & TYPE_MASK) == TYPE_STRUCT) { + info.type = next_field(state, type, info.type); + info.offset = field_offset(state, type, + info.type->field_ident); } } while(comma && (peek(state) != TOK_RBRACE)); if ((type->elements == ELEMENT_COUNT_UNSPECIFIED) && |