diff options
Diffstat (limited to '05')
| -rw-r--r-- | 05/codegen.b | 127 | ||||
| -rw-r--r-- | 05/main.c | 16 |
2 files changed, 128 insertions, 15 deletions
diff --git a/05/codegen.b b/05/codegen.b index db4fb5d..d62a2b2 100644 --- a/05/codegen.b +++ b/05/codegen.b @@ -417,6 +417,16 @@ function emit_subsd_xmm0_xmm1 code_output += 4 return +function emit_mulsd_xmm0_xmm1 + *4code_output = 0xc1590ff2 + code_output += 4 + return + +function emit_divsd_xmm0_xmm1 + *4code_output = 0xc15e0ff2 + code_output += 4 + return + function emit_neg_rax ; 48 f7 d8 *2code_output = 0xf748 @@ -881,6 +891,7 @@ function generate_stack_add emit_add_rax_rbx() ; add rax, rbx emit_add_rsp_imm32(8) ; add rsp, 8 emit_mov_qword_rsp_rax() ; mov [rsp], rax + generate_cast_top_of_stack(statement, TYPE_UNSIGNED_LONG, out_type) return :generate_add_floats @@ -890,6 +901,7 @@ function generate_stack_add emit_movq_xmm1_xmm0() ; movq xmm1, xmm0 emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) emit_movq_xmm0_rax() ; movq xmm0, rax + emit_cvtss2sd_xmm0_xmm0() ; cvtss2sd xmm0, xmm0 emit_addsd_xmm0_xmm1() ; addsd xmm0, xmm1 emit_cvtsd2ss_xmm0_xmm0() ; cvtsd2ss xmm0, xmm0 emit_movq_rax_xmm0() ; movq rax, xmm0 @@ -931,6 +943,7 @@ function generate_stack_sub emit_sub_rax_rbx() ; sub rax, rbx emit_add_rsp_imm32(8) ; add rsp, 8 emit_mov_qword_rsp_rax() ; mov [rsp], rax + generate_cast_top_of_stack(statement, TYPE_UNSIGNED_LONG, out_type) return :generate_sub_pointers @@ -969,6 +982,7 @@ function generate_stack_sub emit_movq_xmm1_xmm0() ; movq xmm1, xmm0 emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) emit_movq_xmm0_rax() ; movq xmm0, rax + emit_cvtss2sd_xmm0_xmm0() ; cvtss2sd xmm0, xmm0 emit_subsd_xmm0_xmm1() ; subsd xmm0, xmm1 emit_cvtsd2ss_xmm0_xmm0() ; cvtsd2ss xmm0, xmm0 emit_movq_rax_xmm0() ; movq rax, xmm0 @@ -987,6 +1001,105 @@ function generate_stack_sub emit_mov_qword_rsp_rax() ; mov [rsp], rax return +; pop the top two things off of the stack, and push their product +function generate_stack_mul + argument statement ; for errors + argument type + local p + p = types + type + if *1p == TYPE_FLOAT goto generate_mul_floats + if *1p == TYPE_DOUBLE goto generate_mul_doubles + + emit_mov_rax_qword_rsp_plus_imm32(0) ; mov rax, [rsp] (second operand) + emit_mov_reg(REG_RBX, REG_RAX) ; mov rbx, rax + emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) + emit_mul_rbx() ; mul rbx + emit_add_rsp_imm32(8) ; add rsp, 8 + emit_mov_qword_rsp_rax() ; mov [rsp], rax + generate_cast_top_of_stack(statement, TYPE_UNSIGNED_LONG, type) + return + + :generate_mul_floats + emit_mov_rax_qword_rsp_plus_imm32(0) ; mov rax, [rsp] (second operand) + emit_movq_xmm0_rax() ; movq xmm0, rax + emit_cvtss2sd_xmm0_xmm0() ; cvtss2sd xmm0, xmm0 + emit_movq_xmm1_xmm0() ; movq xmm1, xmm0 + emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) + emit_movq_xmm0_rax() ; movq xmm0, rax + emit_cvtss2sd_xmm0_xmm0() ; cvtss2sd xmm0, xmm0 + emit_mulsd_xmm0_xmm1() ; mulsd xmm0, xmm1 + emit_cvtsd2ss_xmm0_xmm0() ; cvtsd2ss xmm0, xmm0 + emit_movq_rax_xmm0() ; movq rax, xmm0 + emit_add_rsp_imm32(8) ; add rsp, 8 + emit_mov_qword_rsp_rax() ; mov [rsp], rax + return + + :generate_mul_doubles + emit_mov_rax_qword_rsp_plus_imm32(0) ; mov rax, [rsp] (second operand) + emit_movq_xmm1_rax() ; movq xmm1, rax + emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) + emit_movq_xmm0_rax() ; movq xmm0, rax + emit_mulsd_xmm0_xmm1() ; mulsd xmm0, xmm1 + emit_movq_rax_xmm0() ; movq rax, xmm0 + emit_add_rsp_imm32(8) ; add rsp, 8 + emit_mov_qword_rsp_rax() ; mov [rsp], rax + return + +; pop the top two things off of the stack, and push their quotient +function generate_stack_div + argument statement ; for errors + argument type + local p + local c + p = types + type + if *1p == TYPE_FLOAT goto generate_div_floats + if *1p == TYPE_DOUBLE goto generate_div_doubles + + emit_mov_rax_qword_rsp_plus_imm32(0) ; mov rax, [rsp] (second operand) + emit_mov_reg(REG_RBX, REG_RAX) ; mov rbx, rax + emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) + c = *1p & 1 + if c == 1 goto generate_div_signed + :generate_div_unsigned + emit_zero_rdx() ; xor edx, edx + emit_div_rbx() ; div rbx + goto generate_div_cont + :generate_div_signed + emit_cqo() ; cqo + emit_idiv_rbx() ; idiv rbx + goto generate_div_cont + :generate_div_cont + emit_add_rsp_imm32(8) ; add rsp, 8 + emit_mov_qword_rsp_rax() ; mov [rsp], rax + generate_cast_top_of_stack(statement, TYPE_UNSIGNED_LONG, type) + return + + :generate_div_floats + emit_mov_rax_qword_rsp_plus_imm32(0) ; mov rax, [rsp] (second operand) + emit_movq_xmm0_rax() ; movq xmm0, rax + emit_cvtss2sd_xmm0_xmm0() ; cvtss2sd xmm0, xmm0 + emit_movq_xmm1_xmm0() ; movq xmm1, xmm0 + emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) + emit_movq_xmm0_rax() ; movq xmm0, rax + emit_cvtss2sd_xmm0_xmm0() ; cvtss2sd xmm0, xmm0 + emit_divsd_xmm0_xmm1() ; divsd xmm0, xmm1 + emit_cvtsd2ss_xmm0_xmm0() ; cvtsd2ss xmm0, xmm0 + emit_movq_rax_xmm0() ; movq rax, xmm0 + emit_add_rsp_imm32(8) ; add rsp, 8 + emit_mov_qword_rsp_rax() ; mov [rsp], rax + return + + :generate_div_doubles + emit_mov_rax_qword_rsp_plus_imm32(0) ; mov rax, [rsp] (second operand) + emit_movq_xmm1_rax() ; movq xmm1, rax + emit_mov_rax_qword_rsp_plus_imm32(8) ; mov rax, [rsp+8] (first operand) + emit_movq_xmm0_rax() ; movq xmm0, rax + emit_divsd_xmm0_xmm1() ; divsd xmm0, xmm1 + emit_movq_rax_xmm0() ; movq rax, xmm0 + emit_add_rsp_imm32(8) ; add rsp, 8 + emit_mov_qword_rsp_rax() ; mov [rsp], rax + return + ; pop a pointer off of the stack, then push the dereferenced value according to `type` function generate_stack_dereference argument statement ; for errors @@ -1178,6 +1291,8 @@ function generate_push_expression if c == EXPRESSION_LOGICAL_NOT goto generate_unary_logical_not if c == EXPRESSION_ADD goto generate_add if c == EXPRESSION_SUB goto generate_sub + if c == EXPRESSION_MUL goto generate_mul + if c == EXPRESSION_DIV goto generate_div if c == EXPRESSION_GLOBAL_VARIABLE goto generate_global_variable if c == EXPRESSION_LOCAL_VARIABLE goto generate_local_variable if c == EXPRESSION_DEREFERENCE goto generate_dereference @@ -1276,6 +1391,18 @@ function generate_push_expression expr = generate_push_expression_casted(statement, expr, type) generate_stack_sub(statement, *4c, *4d, type) return expr + :generate_mul + expr += 8 + expr = generate_push_expression_casted(statement, expr, type) + expr = generate_push_expression_casted(statement, expr, type) + generate_stack_mul(statement, type) + return expr + :generate_div + expr += 8 + expr = generate_push_expression_casted(statement, expr, type) + expr = generate_push_expression_casted(statement, expr, type) + generate_stack_div(statement, type) + return expr :generate_unary_logical_not expr += 8 p = expr + 4 @@ -1,18 +1,4 @@ -static char x = -2; - -typedef struct { - int x; - char y; - long z; - long q; -} Structure; - -Structure a = {1,2,3,-4}; long main(int argc, char **argv) { - Structure a = {1,2,3,4}; - int x = 100; - a;a;a;a;a; - x = x + x, x = x + 2; - return x; + return ((float)1 / (float)3) * (float)3; } |