diff options
Diffstat (limited to 'boot/symbol.s')
| -rw-r--r-- | boot/symbol.s | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/boot/symbol.s b/boot/symbol.s index a927b0e..71a58e3 100644 --- a/boot/symbol.s +++ b/boot/symbol.s @@ -2,7 +2,7 @@ # v. 2.0. If a copy of the MPL was not distributed with this file, You can # obtain one at https://mozilla.org/MPL/2.0/. -.global symbol_table_build, symbol_table_find +.global symbol_table_build, symbol_table_find, symbol_table_make_pointer .include "boot/definitions.inc" @@ -18,6 +18,8 @@ symbol_builtin_name_word: .ascii "Word" symbol_builtin_name_byte: .ascii "Byte" .type symbol_builtin_name_char, @object symbol_builtin_name_char: .ascii "Char" +.type symbol_builtin_name_bool, @object +symbol_builtin_name_bool: .ascii "Bool" # Every type info starts with a word describing what type it is. @@ -34,6 +36,9 @@ symbol_builtin_type_byte: .word TYPE_PRIMITIVE .type symbol_builtin_type_char, @object symbol_builtin_type_char: .word TYPE_PRIMITIVE .word 1 +.type symbol_builtin_type_bool, @object +symbol_builtin_type_bool: .word TYPE_PRIMITIVE + .word 1 .section .bss @@ -81,20 +86,19 @@ symbol_table_find: beqz s2, .Lsymbol_table_find_not_found # Compare string lengths. + mv a0, s3 + mv a1, s4 lw a2, 0(s1) - bne s3, a2, .Lsymbol_table_find_continue - - # If lengths match, compare the content. - mv a0, s4 - lw a1, 4(s1) - call _memcmp + lw a3, 4(s1) + call _string_equal - bnez a0, .Lsymbol_table_find_continue + beqz a0, .Lsymbol_table_find_continue lw a0, 8(s1) # Pointer to the symbol. j .Lsymbol_table_end .Lsymbol_table_find_continue: + addi s1, s1, 12 addi s2, s2, -1 j .Lsymbol_table_find_loop @@ -113,6 +117,22 @@ symbol_table_find: addi sp, sp, 32 ret +# Creates a pointer type. +# +# Parameters: +# a0 - Pointer to the base type. +# a1 - Output memory. +# +# Sets a0 to the size of newly created type in bytes. +.type symbol_table_make_pointer, @function +symbol_table_make_pointer: + li t0, TYPE_POINTER + sw t0, 0(a1) + sw a0, 4(a1) + + li a0, 8 + ret + # Build the initial symbols. # # Sets a0 to the pointer to the global symbol table. @@ -165,4 +185,15 @@ symbol_table_build: sw t1, 0(a0) addi t0, t0, 12 + li t1, 4 # Length of the word "Bool". + sw t1, 0(t0) + la t1, symbol_builtin_name_bool + sw t1, 4(t0) + la t1, symbol_builtin_type_bool + sw t1, 8(t0) + lw t1, 0(a0) + addi t1, t1, 1 + sw t1, 0(a0) + addi t0, t0, 12 + ret |