riscv64-asm.c

   1 /*************************************************************/
   2 /*
   3  *  RISCV64 dummy assembler for TCC
   4  *
   5  */
   6
   7 #ifdef TARGET_DEFS_ONLY
   8
   9 #define CONFIG_TCC_ASM
  10 #define NB_ASM_REGS 32
  11
  12 ST_FUNC void g(int c);
  13 ST_FUNC void gen_le16(int c);
  14 ST_FUNC void gen_le32(int c);
  15
  16 /*************************************************************/
  17 #else
  18 /*************************************************************/
  19 #define USING_GLOBALS
  20 #include "tcc.h"
  21
  22 static void asm_error(void)
  23 {
  24     tcc_error("RISCV64 asm not implemented.");
  25 }
  26
  27 /* XXX: make it faster ? */
  28 ST_FUNC void g(int c)
  29 {
  30     int ind1;
  31     if (nocode_wanted)
  32         return;
  33     ind1 = ind + 1;
  34     if (ind1 > cur_text_section->data_allocated)
  35         section_realloc(cur_text_section, ind1);
  36     cur_text_section->data[ind] = c;
  37     ind = ind1;
  38 }
  39
  40 ST_FUNC void gen_le16 (int i)
  41 {
  42     g(i);
  43     g(i>>8);
  44 }
  45
  46 ST_FUNC void gen_le32 (int i)
  47 {
  48     gen_le16(i);
  49     gen_le16(i>>16);
  50 }
  51
  52 ST_FUNC void gen_expr32(ExprValue *pe)
  53 {
  54     gen_le32(pe->v);
  55 }
  56
  57 ST_FUNC void asm_opcode(TCCState *s1, int opcode)
  58 {
  59     asm_error();
  60 }
  61
  62 ST_FUNC void subst_asm_operand(CString *add_str, SValue *sv, int modifier)
  63 {
  64     asm_error();
  65 }
  66
  67 /* generate prolog and epilog code for asm statement */
  68 ST_FUNC void asm_gen_code(ASMOperand *operands, int nb_operands,
  69                          int nb_outputs, int is_output,
  70                          uint8_t *clobber_regs,
  71                          int out_reg)
  72 {
  73 }
  74
  75 ST_FUNC void asm_compute_constraints(ASMOperand *operands,
  76                                     int nb_operands, int nb_outputs,
  77                                     const uint8_t *clobber_regs,
  78                                     int *pout_reg)
  79 {
  80 }
  81
  82 ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str)
  83 {
  84     asm_error();
  85 }
  86
  87 ST_FUNC int asm_parse_regvar (int t)
  88 {
  89     asm_error();
  90     return -1;
  91 }
  92
  93 /*************************************************************/
  94 #endif /* ndef TARGET_DEFS_ONLY */