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halyavin |
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/* |
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* ARMv4 code generator for TCC |
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* |
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* Copyright (c) 2003 Daniel Glöckner |
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* |
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* Based on i386-gen.c by Fabrice Bellard |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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/* number of available registers */ |
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#define NB_REGS 9 |
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/* a register can belong to several classes. The classes must be |
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sorted from more general to more precise (see gv2() code which does |
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assumptions on it). */ |
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#define RC_INT 0x0001 /* generic integer register */ |
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#define RC_FLOAT 0x0002 /* generic float register */ |
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#define RC_R0 0x0004 |
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#define RC_R1 0x0008 |
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#define RC_R2 0x0010 |
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#define RC_R3 0x0020 |
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#define RC_R12 0x0040 |
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#define RC_F0 0x0080 |
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#define RC_F1 0x0100 |
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#define RC_F2 0x0200 |
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#define RC_F3 0x0400 |
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#define RC_IRET RC_R0 /* function return: integer register */ |
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#define RC_LRET RC_R1 /* function return: second integer register */ |
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#define RC_FRET RC_F0 /* function return: float register */ |
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/* pretty names for the registers */ |
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enum { |
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TREG_R0 = 0, |
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TREG_R1, |
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TREG_R2, |
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TREG_R3, |
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TREG_R12, |
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TREG_F0, |
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TREG_F1, |
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TREG_F2, |
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TREG_F3, |
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}; |
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int reg_classes[NB_REGS] = { |
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/* r0 */ RC_INT | RC_R0, |
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/* r1 */ RC_INT | RC_R1, |
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/* r2 */ RC_INT | RC_R2, |
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/* r3 */ RC_INT | RC_R3, |
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/* r12 */ RC_INT | RC_R12, |
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/* f0 */ RC_FLOAT | RC_F0, |
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/* f1 */ RC_FLOAT | RC_F1, |
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/* f2 */ RC_FLOAT | RC_F2, |
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/* f3 */ RC_FLOAT | RC_F3, |
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}; |
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static int two2mask(int a,int b) { |
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return (reg_classes[a]|reg_classes[b])&~(RC_INT|RC_FLOAT); |
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} |
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static int regmask(int r) { |
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return reg_classes[r]&~(RC_INT|RC_FLOAT); |
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} |
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/* return registers for function */ |
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#define REG_IRET TREG_R0 /* single word int return register */ |
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#define REG_LRET TREG_R1 /* second word return register (for long long) */ |
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#define REG_FRET TREG_F0 /* float return register */ |
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/* defined if function parameters must be evaluated in reverse order */ |
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#define INVERT_FUNC_PARAMS |
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/* defined if structures are passed as pointers. Otherwise structures |
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are directly pushed on stack. */ |
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//#define FUNC_STRUCT_PARAM_AS_PTR |
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/* pointer size, in bytes */ |
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#define PTR_SIZE 4 |
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/* long double size and alignment, in bytes */ |
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#define LDOUBLE_SIZE 8 |
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#define LDOUBLE_ALIGN 4 |
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/* maximum alignment (for aligned attribute support) */ |
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#define MAX_ALIGN 8 |
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#define CHAR_IS_UNSIGNED |
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/******************************************************/ |
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/* ELF defines */ |
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#define EM_TCC_TARGET EM_ARM |
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/* relocation type for 32 bit data relocation */ |
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#define R_DATA_32 R_ARM_ABS32 |
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#define R_JMP_SLOT R_ARM_JUMP_SLOT |
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#define R_COPY R_ARM_COPY |
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#define ELF_START_ADDR 0x00008000 |
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#define ELF_PAGE_SIZE 0x1000 |
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/******************************************************/ |
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static unsigned long func_sub_sp_offset,last_itod_magic; |
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void o(unsigned long i) |
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{ |
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/* this is a good place to start adding big-endian support*/ |
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int ind1; |
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ind1 = ind + 4; |
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if (!cur_text_section) |
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error("compiler error! This happens f.ex. if the compiler\n" |
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"can't evaluate constant expressions outside of a function."); |
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if (ind1 > cur_text_section->data_allocated) |
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section_realloc(cur_text_section, ind1); |
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cur_text_section->data[ind++] = i&255; |
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i>>=8; |
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cur_text_section->data[ind++] = i&255; |
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i>>=8; |
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cur_text_section->data[ind++] = i&255; |
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i>>=8; |
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cur_text_section->data[ind++] = i; |
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} |
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static unsigned long stuff_const(unsigned long op,unsigned long c) |
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{ |
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int try_neg=0; |
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unsigned long nc = 0,negop = 0; |
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switch(op&0x1F00000) |
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{ |
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case 0x800000: //add |
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case 0x400000: //sub |
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try_neg=1; |
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negop=op^0xC00000; |
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nc=-c; |
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break; |
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case 0x1A00000: //mov |
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case 0x1E00000: //mvn |
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try_neg=1; |
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negop=op^0x400000; |
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nc=~c; |
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break; |
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case 0x200000: //xor |
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if(c==~0) |
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return (op&0xF010F000)|((op>>16)&0xF)|0x1E00000; |
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break; |
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case 0x0: //and |
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if(c==~0) |
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return (op&0xF010F000)|((op>>16)&0xF)|0x1A00000; |
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case 0x1C00000: //bic |
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try_neg=1; |
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negop=op^0x1C00000; |
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nc=~c; |
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break; |
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case 0x1800000: //orr |
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if(c==~0) |
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return (op&0xFFF0FFFF)|0x1E00000; |
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break; |
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} |
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do { |
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unsigned long m; |
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int i; |
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if(c<256) /* catch undefined <<32 */ |
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return op|c; |
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for(i=2;i<32;i+=2) { |
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m=(0xff>>i)|(0xff<<(32-i)); |
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if(!(c&~m)) |
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return op|(i<<7)|(c<>(32-i)); |
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} |
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op=negop; |
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c=nc; |
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} while(try_neg--); |
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return 0; |
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} |
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//only add,sub |
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void stuff_const_harder(unsigned long op,unsigned long v) { |
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unsigned long x; |
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x=stuff_const(op,v); |
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if(x) |
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o(x); |
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else { |
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unsigned long a[16],nv,no,o2,n2; |
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int i,j,k; |
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a[0]=0xff; |
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o2=(op&0xfff0ffff)|((op&0xf000)<<4);; |
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for(i=1;i<16;i++) |
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a[i]=(a[i-1]>>2)|(a[i-1]<<30); |
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for(i=0;i<12;i++) |
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for(j=i+4;i<13+i;i++) |
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if((v&(a[i]|a[j]))==v) { |
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o(stuff_const(op,v&a[i])); |
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o(stuff_const(o2,v&a[j])); |
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return; |
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} |
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no=op^0xC00000; |
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n2=o2^0xC00000; |
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nv=-v; |
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for(i=0;i<12;i++) |
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for(j=i+4;i<13+i;i++) |
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if((nv&(a[i]|a[j]))==nv) { |
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o(stuff_const(no,nv&a[i])); |
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o(stuff_const(n2,nv&a[j])); |
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return; |
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} |
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for(i=0;i<8;i++) |
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for(j=i+4;i<12;i++) |
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for(k=j+4;k<13+i;i++) |
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if((v&(a[i]|a[j]|a[k]))==v) { |
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o(stuff_const(op,v&a[i])); |
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o(stuff_const(o2,v&a[j])); |
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o(stuff_const(o2,v&a[k])); |
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return; |
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} |
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no=op^0xC00000; |
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nv=-v; |
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for(i=0;i<8;i++) |
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for(j=i+4;i<12;i++) |
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for(k=j+4;k<13+i;i++) |
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if((nv&(a[i]|a[j]|a[k]))==nv) { |
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o(stuff_const(no,nv&a[i])); |
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o(stuff_const(n2,nv&a[j])); |
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o(stuff_const(n2,nv&a[k])); |
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return; |
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} |
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o(stuff_const(op,v&a[0])); |
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o(stuff_const(o2,v&a[4])); |
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o(stuff_const(o2,v&a[8])); |
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o(stuff_const(o2,v&a[12])); |
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} |
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} |
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unsigned long encbranch(int pos,int addr,int fail) |
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{ |
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addr-=pos+8; |
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addr/=4; |
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if(addr>=0x1000000 || addr<-0x1000000) { |
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if(fail) |
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error("FIXME: function bigger than 32MB"); |
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return 0; |
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} |
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return 0x0A000000|(addr&0xffffff); |
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} |
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int decbranch(int pos) |
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{ |
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int x; |
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x=*(int *)(cur_text_section->data + pos); |
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x&=0x00ffffff; |
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if(x&0x800000) |
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x-=0x1000000; |
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return x*4+pos+8; |
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} |
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/* output a symbol and patch all calls to it */ |
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void gsym_addr(int t, int a) |
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{ |
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unsigned long *x; |
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int lt; |
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while(t) { |
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x=(unsigned long *)(cur_text_section->data + t); |
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t=decbranch(lt=t); |
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if(a==lt+4) |
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*x=0xE1A00000; // nop |
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else { |
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*x &= 0xff000000; |
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*x |= encbranch(lt,a,1); |
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} |
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} |
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} |
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void gsym(int t) |
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{ |
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gsym_addr(t, ind); |
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} |
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289 |
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static unsigned long fpr(int r) |
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{ |
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if(rTREG_F3) |
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error("compiler error! register %i is no fp register\n",r); |
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return r-5; |
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} |
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296 |
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static unsigned long intr(int r) |
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{ |
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if(r==4) |
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return 12; |
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if((r<0 || r>4) && r!=14) |
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error("compiler error! register %i is no int register\n",r); |
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return r; |
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} |
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305 |
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static void calcaddr(unsigned long *base,int *off,int *sgn,int maxoff,unsigned shift) |
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{ |
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if(*off>maxoff || *off&((1< |
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unsigned long x,y; |
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x=0xE280E000; |
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if(*sgn) |
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x=0xE240E000; |
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x|=(*base)<<16; |
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*base=14; // lr |
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y=stuff_const(x,*off&~maxoff); |
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if(y) { |
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o(y); |
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*off&=maxoff; |
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return; |
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} |
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y=stuff_const(x,(*off+maxoff)&~maxoff); |
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if(y) { |
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o(y); |
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*sgn=!*sgn; |
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*off=((*off+maxoff)&~maxoff)-*off; |
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return; |
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} |
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stuff_const_harder(x,*off&~maxoff); |
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*off&=maxoff; |
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330 |
} |
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} |
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332 |
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static unsigned long mapcc(int cc) |
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{ |
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switch(cc) |
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{ |
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case TOK_ULT: |
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return 0x30000000; |
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case TOK_UGE: |
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return 0x20000000; |
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case TOK_EQ: |
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return 0x00000000; |
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case TOK_NE: |
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344 |
return 0x10000000; |
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case TOK_ULE: |
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return 0x90000000; |
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case TOK_UGT: |
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return 0x80000000; |
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case TOK_LT: |
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return 0xB0000000; |
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case TOK_GE: |
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return 0xA0000000; |
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case TOK_LE: |
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return 0xD0000000; |
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case TOK_GT: |
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return 0xC0000000; |
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} |
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358 |
error("unexpected condition code"); |
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return 0xE0000000; |
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360 |
} |
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361 |
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362 |
static int negcc(int cc) |
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{ |
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switch(cc) |
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{ |
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case TOK_ULT: |
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return TOK_UGE; |
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368 |
case TOK_UGE: |
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return TOK_ULT; |
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case TOK_EQ: |
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371 |
return TOK_NE; |
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case TOK_NE: |
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return TOK_EQ; |
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case TOK_ULE: |
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return TOK_UGT; |
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case TOK_UGT: |
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return TOK_ULE; |
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case TOK_LT: |
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return TOK_GE; |
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case TOK_GE: |
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381 |
return TOK_LT; |
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382 |
case TOK_LE: |
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return TOK_GT; |
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384 |
case TOK_GT: |
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385 |
return TOK_LE; |
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386 |
} |
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387 |
error("unexpected condition code"); |
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388 |
return TOK_NE; |
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389 |
} |
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390 |
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391 |
/* load 'r' from value 'sv' */ |
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392 |
void load(int r, SValue *sv) |
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393 |
{ |
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394 |
int v, ft, fc, fr, sign; |
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395 |
unsigned long op; |
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396 |
SValue v1; |
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397 |
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|
|
398 |
fr = sv->r; |
|
|
399 |
ft = sv->type.t; |
|
|
400 |
fc = sv->c.ul; |
|
|
401 |
|
|
|
402 |
if(fc>=0) |
|
|
403 |
sign=0; |
|
|
404 |
else { |
|
|
405 |
sign=1; |
|
|
406 |
fc=-fc; |
|
|
407 |
} |
|
|
408 |
|
|
|
409 |
v = fr & VT_VALMASK; |
|
|
410 |
if (fr & VT_LVAL) { |
|
|
411 |
unsigned long base=0xB; // fp |
|
|
412 |
if(v == VT_LLOCAL) { |
|
|
413 |
v1.type.t = VT_PTR; |
|
|
414 |
v1.r = VT_LOCAL | VT_LVAL; |
|
|
415 |
v1.c.ul = sv->c.ul; |
|
|
416 |
load(base=14 /* lr */, &v1); |
|
|
417 |
fc=sign=0; |
|
|
418 |
v=VT_LOCAL; |
|
|
419 |
} else if(v == VT_CONST) { |
|
|
420 |
v1.type.t = VT_PTR; |
|
|
421 |
v1.r = fr&~VT_LVAL; |
|
|
422 |
v1.c.ul = sv->c.ul; |
|
|
423 |
v1.sym=sv->sym; |
|
|
424 |
load(base=14, &v1); |
|
|
425 |
fc=sign=0; |
|
|
426 |
v=VT_LOCAL; |
|
|
427 |
} else if(v < VT_CONST) { |
|
|
428 |
base=intr(v); |
|
|
429 |
fc=sign=0; |
|
|
430 |
v=VT_LOCAL; |
|
|
431 |
} |
|
|
432 |
if(v == VT_LOCAL) { |
|
|
433 |
if(is_float(ft)) { |
|
|
434 |
calcaddr(&base,&fc,&sign,1020,2); |
|
|
435 |
op=0xED100100; |
|
|
436 |
if(!sign) |
|
|
437 |
op|=0x800000; |
|
|
438 |
#if LDOUBLE_SIZE == 8 |
|
|
439 |
if ((ft & VT_BTYPE) != VT_FLOAT) |
|
|
440 |
op|=0x8000; |
|
|
441 |
#else |
|
|
442 |
if ((ft & VT_BTYPE) == VT_DOUBLE) |
|
|
443 |
op|=0x8000; |
|
|
444 |
else if ((ft & VT_BTYPE) == VT_LDOUBLE) |
|
|
445 |
op|=0x400000; |
|
|
446 |
#endif |
|
|
447 |
o(op|(fpr(r)<<12)|(fc>>2)|(base<<16)); |
|
|
448 |
} else if((ft & VT_TYPE) == VT_BYTE || (ft & VT_BTYPE) == VT_SHORT) { |
|
|
449 |
calcaddr(&base,&fc,&sign,255,0); |
|
|
450 |
op=0xE1500090; |
|
|
451 |
if ((ft & VT_BTYPE) == VT_SHORT) |
|
|
452 |
op|=0x20; |
|
|
453 |
if ((ft & VT_UNSIGNED) == 0) |
|
|
454 |
op|=0x40; |
|
|
455 |
if(!sign) |
|
|
456 |
op|=0x800000; |
|
|
457 |
o(op|(intr(r)<<12)|(base<<16)|((fc&0xf0)<<4)|(fc&0xf)); |
|
|
458 |
} else { |
|
|
459 |
calcaddr(&base,&fc,&sign,4095,0); |
|
|
460 |
op=0xE5100000; |
|
|
461 |
if(!sign) |
|
|
462 |
op|=0x800000; |
|
|
463 |
if ((ft & VT_BTYPE) == VT_BYTE) |
|
|
464 |
op|=0x400000; |
|
|
465 |
o(op|(intr(r)<<12)|fc|(base<<16)); |
|
|
466 |
} |
|
|
467 |
return; |
|
|
468 |
} |
|
|
469 |
} else { |
|
|
470 |
if (v == VT_CONST) { |
|
|
471 |
op=stuff_const(0xE3A00000|(intr(r)<<12),sv->c.ul); |
|
|
472 |
if (fr & VT_SYM || !op) { |
|
|
473 |
o(0xE59F0000|(intr(r)<<12)); |
|
|
474 |
o(0xEA000000); |
|
|
475 |
if(fr & VT_SYM) |
|
|
476 |
greloc(cur_text_section, sv->sym, ind, R_ARM_ABS32); |
|
|
477 |
o(sv->c.ul); |
|
|
478 |
} else |
|
|
479 |
o(op); |
|
|
480 |
return; |
|
|
481 |
} else if (v == VT_LOCAL) { |
|
|
482 |
op=stuff_const(0xE28B0000|(intr(r)<<12),sv->c.ul); |
|
|
483 |
if (fr & VT_SYM || !op) { |
|
|
484 |
o(0xE59F0000|(intr(r)<<12)); |
|
|
485 |
o(0xEA000000); |
|
|
486 |
if(fr & VT_SYM) // needed ? |
|
|
487 |
greloc(cur_text_section, sv->sym, ind, R_ARM_ABS32); |
|
|
488 |
o(sv->c.ul); |
|
|
489 |
o(0xE08B0000|(intr(r)<<12)|intr(r)); |
|
|
490 |
} else |
|
|
491 |
o(op); |
|
|
492 |
return; |
|
|
493 |
} else if(v == VT_CMP) { |
|
|
494 |
o(mapcc(sv->c.ul)|0x3A00001|(intr(r)<<12)); |
|
|
495 |
o(mapcc(negcc(sv->c.ul))|0x3A00000|(intr(r)<<12)); |
|
|
496 |
return; |
|
|
497 |
} else if (v == VT_JMP || v == VT_JMPI) { |
|
|
498 |
int t; |
|
|
499 |
t = v & 1; |
|
|
500 |
o(0xE3A00000|(intr(r)<<12)|t); |
|
|
501 |
o(0xEA000000); |
|
|
502 |
gsym(sv->c.ul); |
|
|
503 |
o(0xE3A00000|(intr(r)<<12)|(t^1)); |
|
|
504 |
return; |
|
|
505 |
} else if (v < VT_CONST) { |
|
|
506 |
if(is_float(ft)) |
|
|
507 |
o(0xEE008180|(fpr(r)<<12)|fpr(v)); |
|
|
508 |
else |
|
|
509 |
o(0xE1A00000|(intr(r)<<12)|intr(v)); |
|
|
510 |
return; |
|
|
511 |
} |
|
|
512 |
} |
|
|
513 |
error("load unimplemented!"); |
|
|
514 |
} |
|
|
515 |
|
|
|
516 |
/* store register 'r' in lvalue 'v' */ |
|
|
517 |
void store(int r, SValue *sv) |
|
|
518 |
{ |
|
|
519 |
SValue v1; |
|
|
520 |
int v, ft, fc, fr, sign; |
|
|
521 |
unsigned long op; |
|
|
522 |
|
|
|
523 |
fr = sv->r; |
|
|
524 |
ft = sv->type.t; |
|
|
525 |
fc = sv->c.ul; |
|
|
526 |
|
|
|
527 |
if(fc>=0) |
|
|
528 |
sign=0; |
|
|
529 |
else { |
|
|
530 |
sign=1; |
|
|
531 |
fc=-fc; |
|
|
532 |
} |
|
|
533 |
|
|
|
534 |
v = fr & VT_VALMASK; |
|
|
535 |
if (fr & VT_LVAL || fr == VT_LOCAL) { |
|
|
536 |
unsigned long base=0xb; |
|
|
537 |
if(v < VT_CONST) { |
|
|
538 |
base=intr(v); |
|
|
539 |
v=VT_LOCAL; |
|
|
540 |
fc=sign=0; |
|
|
541 |
} else if(v == VT_CONST) { |
|
|
542 |
v1.type.t = ft; |
|
|
543 |
v1.r = fr&~VT_LVAL; |
|
|
544 |
v1.c.ul = sv->c.ul; |
|
|
545 |
v1.sym=sv->sym; |
|
|
546 |
load(base=14, &v1); |
|
|
547 |
fc=sign=0; |
|
|
548 |
v=VT_LOCAL; |
|
|
549 |
} |
|
|
550 |
if(v == VT_LOCAL) { |
|
|
551 |
if(is_float(ft)) { |
|
|
552 |
calcaddr(&base,&fc,&sign,1020,2); |
|
|
553 |
op=0xED000100; |
|
|
554 |
if(!sign) |
|
|
555 |
op|=0x800000; |
|
|
556 |
#if LDOUBLE_SIZE == 8 |
|
|
557 |
if ((ft & VT_BTYPE) != VT_FLOAT) |
|
|
558 |
op|=0x8000; |
|
|
559 |
#else |
|
|
560 |
if ((ft & VT_BTYPE) == VT_DOUBLE) |
|
|
561 |
op|=0x8000; |
|
|
562 |
if ((ft & VT_BTYPE) == VT_LDOUBLE) |
|
|
563 |
op|=0x400000; |
|
|
564 |
#endif |
|
|
565 |
o(op|(fpr(r)<<12)|(fc>>2)|(base<<16)); |
|
|
566 |
return; |
|
|
567 |
} else if((ft & VT_BTYPE) == VT_SHORT) { |
|
|
568 |
calcaddr(&base,&fc,&sign,255,0); |
|
|
569 |
op=0xE14000B0; |
|
|
570 |
if(!sign) |
|
|
571 |
op|=0x800000; |
|
|
572 |
o(op|(intr(r)<<12)|(base<<16)|((fc&0xf0)<<4)|(fc&0xf)); |
|
|
573 |
} else { |
|
|
574 |
calcaddr(&base,&fc,&sign,4095,0); |
|
|
575 |
op=0xE5000000; |
|
|
576 |
if(!sign) |
|
|
577 |
op|=0x800000; |
|
|
578 |
if ((ft & VT_BTYPE) == VT_BYTE) |
|
|
579 |
op|=0x400000; |
|
|
580 |
o(op|(intr(r)<<12)|fc|(base<<16)); |
|
|
581 |
} |
|
|
582 |
return; |
|
|
583 |
} |
|
|
584 |
} |
|
|
585 |
error("store unimplemented"); |
|
|
586 |
} |
|
|
587 |
|
|
|
588 |
static void gadd_sp(int val) |
|
|
589 |
{ |
|
|
590 |
stuff_const_harder(0xE28DD000,val); |
|
|
591 |
} |
|
|
592 |
|
|
|
593 |
/* 'is_jmp' is '1' if it is a jump */ |
|
|
594 |
static void gcall_or_jmp(int is_jmp) |
|
|
595 |
{ |
|
|
596 |
int r; |
|
|
597 |
if ((vtop->r & (VT_VALMASK | VT_LVAL)) == VT_CONST) { |
|
|
598 |
unsigned long x; |
|
|
599 |
/* constant case */ |
|
|
600 |
x=encbranch(ind,ind+vtop->c.ul,0); |
|
|
601 |
if(x) { |
|
|
602 |
if (vtop->r & VT_SYM) { |
|
|
603 |
/* relocation case */ |
|
|
604 |
greloc(cur_text_section, vtop->sym, ind, R_ARM_PC24); |
|
|
605 |
} else |
|
|
606 |
put_elf_reloc(symtab_section, cur_text_section, ind, R_ARM_PC24, 0); |
|
|
607 |
o(x|(is_jmp?0xE0000000:0xE1000000)); |
|
|
608 |
} else { |
|
|
609 |
if(!is_jmp) |
|
|
610 |
o(0xE28FE004); // add lr,pc,#4 |
|
|
611 |
o(0xE51FF004); // ldr pc,[pc,#-4] |
|
|
612 |
if (vtop->r & VT_SYM) |
|
|
613 |
greloc(cur_text_section, vtop->sym, ind, R_ARM_ABS32); |
|
|
614 |
o(vtop->c.ul); |
|
|
615 |
} |
|
|
616 |
} else { |
|
|
617 |
/* otherwise, indirect call */ |
|
|
618 |
r = gv(RC_INT); |
|
|
619 |
if(!is_jmp) |
|
|
620 |
o(0xE1A0E00F); // mov lr,pc |
|
|
621 |
o(0xE1A0F000|intr(r)); // mov pc,r |
|
|
622 |
} |
|
|
623 |
} |
|
|
624 |
|
|
|
625 |
/* Generate function call. The function address is pushed first, then |
|
|
626 |
all the parameters in call order. This functions pops all the |
|
|
627 |
parameters and the function address. */ |
|
|
628 |
void gfunc_call(int nb_args) |
|
|
629 |
{ |
|
|
630 |
int size, align, r, args_size, i; |
|
|
631 |
Sym *func_sym; |
|
|
632 |
signed char plan[4][2]={{-1,-1},{-1,-1},{-1,-1},{-1,-1}}; |
|
|
633 |
int todo=0xf, keep, plan2[4]={0,0,0,0}; |
|
|
634 |
|
|
|
635 |
r = vtop->r & VT_VALMASK; |
|
|
636 |
if (r == VT_CMP || (r & ~1) == VT_JMP) |
|
|
637 |
gv(RC_INT); |
|
|
638 |
args_size = 0; |
|
|
639 |
for(i = nb_args ; i-- && args_size < 16 ;) { |
|
|
640 |
if ((vtop[-i].type.t & VT_BTYPE) == VT_STRUCT) { |
|
|
641 |
size = type_size(&vtop[-i].type, &align); |
|
|
642 |
size = (size + 3) & ~3; |
|
|
643 |
args_size += size; |
|
|
644 |
} else if ((vtop[-i].type.t & VT_BTYPE) == VT_FLOAT) |
|
|
645 |
args_size += 4; |
|
|
646 |
else if ((vtop[-i].type.t & VT_BTYPE) == VT_DOUBLE) |
|
|
647 |
args_size += 8; |
|
|
648 |
else if ((vtop[-i].type.t & VT_BTYPE) == VT_LDOUBLE) |
|
|
649 |
args_size += LDOUBLE_SIZE; |
|
|
650 |
else { |
|
|
651 |
plan[nb_args-1-i][0]=args_size/4; |
|
|
652 |
args_size += 4; |
|
|
653 |
if ((vtop[-i].type.t & VT_BTYPE) == VT_LLONG && args_size < 16) { |
|
|
654 |
plan[nb_args-1-i][1]=args_size/4; |
|
|
655 |
args_size += 4; |
|
|
656 |
} |
|
|
657 |
} |
|
|
658 |
} |
|
|
659 |
args_size = keep = 0; |
|
|
660 |
for(i = 0;i < nb_args; i++) { |
|
|
661 |
vnrott(keep+1); |
|
|
662 |
if ((vtop->type.t & VT_BTYPE) == VT_STRUCT) { |
|
|
663 |
size = type_size(&vtop->type, &align); |
|
|
664 |
/* align to stack align size */ |
|
|
665 |
size = (size + 3) & ~3; |
|
|
666 |
/* allocate the necessary size on stack */ |
|
|
667 |
gadd_sp(-size); |
|
|
668 |
/* generate structure store */ |
|
|
669 |
r = get_reg(RC_INT); |
|
|
670 |
o(0xE1A0000D|(intr(r)<<12)); |
|
|
671 |
vset(&vtop->type, r | VT_LVAL, 0); |
|
|
672 |
vswap(); |
|
|
673 |
vstore(); |
|
|
674 |
vtop--; |
|
|
675 |
args_size += size; |
|
|
676 |
} else if (is_float(vtop->type.t)) { |
|
|
677 |
r=fpr(gv(RC_FLOAT))<<12; |
|
|
678 |
if ((vtop->type.t & VT_BTYPE) == VT_FLOAT) |
|
|
679 |
size = 4; |
|
|
680 |
else if ((vtop->type.t & VT_BTYPE) == VT_DOUBLE) |
|
|
681 |
size = 8; |
|
|
682 |
else |
|
|
683 |
size = LDOUBLE_SIZE; |
|
|
684 |
|
|
|
685 |
if (size == 12) |
|
|
686 |
r|=0x400000; |
|
|
687 |
else if(size == 8) |
|
|
688 |
r|=0x8000; |
|
|
689 |
|
|
|
690 |
o(0xED2D0100|r|(size>>2)); |
|
|
691 |
vtop--; |
|
|
692 |
args_size += size; |
|
|
693 |
} else { |
|
|
694 |
int s; |
|
|
695 |
/* simple type (currently always same size) */ |
|
|
696 |
/* XXX: implicit cast ? */ |
|
|
697 |
size=4; |
|
|
698 |
if ((vtop->type.t & VT_BTYPE) == VT_LLONG) { |
|
|
699 |
lexpand_nr(); |
|
|
700 |
s=RC_INT; |
|
|
701 |
if(nb_args-i<5 && plan[nb_args-i-1][1]!=-1) { |
|
|
702 |
s=regmask(plan[nb_args-i-1][1]); |
|
|
703 |
todo&=~(1< |
|
|
704 |
} |
|
|
705 |
if(s==RC_INT) { |
|
|
706 |
r = gv(s); |
|
|
707 |
o(0xE52D0004|(intr(r)<<12)); /* str r,[sp,#-4]! */ |
|
|
708 |
vtop--; |
|
|
709 |
} else { |
|
|
710 |
plan2[keep]=s; |
|
|
711 |
keep++; |
|
|
712 |
vswap(); |
|
|
713 |
} |
|
|
714 |
size = 8; |
|
|
715 |
} |
|
|
716 |
s=RC_INT; |
|
|
717 |
if(nb_args-i<5 && plan[nb_args-i-1][0]!=-1) { |
|
|
718 |
s=regmask(plan[nb_args-i-1][0]); |
|
|
719 |
todo&=~(1< |
|
|
720 |
} |
|
|
721 |
if(s==RC_INT) { |
|
|
722 |
r = gv(s); |
|
|
723 |
o(0xE52D0004|(intr(r)<<12)); /* str r,[sp,#-4]! */ |
|
|
724 |
vtop--; |
|
|
725 |
} else { |
|
|
726 |
plan2[keep]=s; |
|
|
727 |
keep++; |
|
|
728 |
} |
|
|
729 |
args_size += size; |
|
|
730 |
} |
|
|
731 |
} |
|
|
732 |
for(i=keep;i--;) { |
|
|
733 |
gv(plan2[i]); |
|
|
734 |
vrott(keep); |
|
|
735 |
} |
|
|
736 |
save_regs(keep); /* save used temporary registers */ |
|
|
737 |
keep++; |
|
|
738 |
if(args_size) { |
|
|
739 |
int n; |
|
|
740 |
n=args_size/4; |
|
|
741 |
if(n>4) |
|
|
742 |
n=4; |
|
|
743 |
todo&=((1< |
|
|
744 |
if(todo) { |
|
|
745 |
int i; |
|
|
746 |
o(0xE8BD0000|todo); |
|
|
747 |
for(i=0;i<4;i++) |
|
|
748 |
if(todo&(1< |
|
|
749 |
vpushi(0); |
|
|
750 |
vtop->r=i; |
|
|
751 |
keep++; |
|
|
752 |
} |
|
|
753 |
} |
|
|
754 |
args_size-=n*4; |
|
|
755 |
} |
|
|
756 |
vnrott(keep); |
|
|
757 |
func_sym = vtop->type.ref; |
|
|
758 |
gcall_or_jmp(0); |
|
|
759 |
if (args_size) |
|
|
760 |
gadd_sp(args_size); |
|
|
761 |
vtop-=keep; |
|
|
762 |
} |
|
|
763 |
|
|
|
764 |
/* generate function prolog of type 't' */ |
|
|
765 |
void gfunc_prolog(CType *func_type) |
|
|
766 |
{ |
|
|
767 |
Sym *sym,*sym2; |
|
|
768 |
int n,addr,size,align; |
|
|
769 |
|
|
|
770 |
sym = func_type->ref; |
|
|
771 |
func_vt = sym->type; |
|
|
772 |
|
|
|
773 |
n=0; |
|
|
774 |
addr=12; |
|
|
775 |
if((func_vt.t & VT_BTYPE) == VT_STRUCT) { |
|
|
776 |
func_vc = addr; |
|
|
777 |
addr += 4; |
|
|
778 |
n++; |
|
|
779 |
} |
|
|
780 |
for(sym2=sym->next;sym2 && n<4;sym2=sym2->next) { |
|
|
781 |
size = type_size(&sym2->type, &align); |
|
|
782 |
size = (size + 3) & ~3; |
|
|
783 |
n+=size/4; |
|
|
784 |
} |
|
|
785 |
o(0xE1A0C00D); /* mov ip,sp */ |
|
|
786 |
if(func_type->ref->c == FUNC_ELLIPSIS) |
|
|
787 |
n=4; |
|
|
788 |
if(n) { |
|
|
789 |
if(n>4) |
|
|
790 |
n=4; |
|
|
791 |
o(0xE92D0000|((1< |
|
|
792 |
} |
|
|
793 |
o(0xE92D5800); /* save fp, ip, lr*/ |
|
|
794 |
o(0xE1A0B00D); /* mov fp,sp */ |
|
|
795 |
func_sub_sp_offset = ind; |
|
|
796 |
o(0xE1A00000); /* nop, leave space for stack adjustment */ |
|
|
797 |
while ((sym = sym->next)) { |
|
|
798 |
CType *type; |
|
|
799 |
type = &sym->type; |
|
|
800 |
sym_push(sym->v & ~SYM_FIELD, type, VT_LOCAL | VT_LVAL, addr); |
|
|
801 |
size = type_size(type, &align); |
|
|
802 |
size = (size + 3) & ~3; |
|
|
803 |
addr += size; |
|
|
804 |
} |
|
|
805 |
last_itod_magic=0; |
|
|
806 |
loc = 0; |
|
|
807 |
} |
|
|
808 |
|
|
|
809 |
/* generate function epilog */ |
|
|
810 |
void gfunc_epilog(void) |
|
|
811 |
{ |
|
|
812 |
unsigned long x; |
|
|
813 |
o(0xE89BA800); /* restore fp, sp, pc */ |
|
|
814 |
if(loc) { |
|
|
815 |
x=stuff_const(0xE24DD000, (-loc + 3) & -4); /* sub sp,sp,# */ |
|
|
816 |
if(x) |
|
|
817 |
*(unsigned long *)(cur_text_section->data + func_sub_sp_offset) = x; |
|
|
818 |
else { |
|
|
819 |
unsigned long addr; |
|
|
820 |
addr=ind; |
|
|
821 |
o(0xE59FC004); /* ldr ip,[pc+4] */ |
|
|
822 |
o(0xE04DD00C); /* sub sp,sp,ip */ |
|
|
823 |
o(0xE1A0F00E); /* mov pc,lr */ |
|
|
824 |
o((-loc + 3) & -4); |
|
|
825 |
*(unsigned long *)(cur_text_section->data + func_sub_sp_offset) = 0xE1000000|encbranch(func_sub_sp_offset,addr,1); |
|
|
826 |
} |
|
|
827 |
} |
|
|
828 |
} |
|
|
829 |
|
|
|
830 |
/* generate a jump to a label */ |
|
|
831 |
int gjmp(int t) |
|
|
832 |
{ |
|
|
833 |
int r; |
|
|
834 |
r=ind; |
|
|
835 |
o(0xE0000000|encbranch(r,t,1)); |
|
|
836 |
return r; |
|
|
837 |
} |
|
|
838 |
|
|
|
839 |
/* generate a jump to a fixed address */ |
|
|
840 |
void gjmp_addr(int a) |
|
|
841 |
{ |
|
|
842 |
gjmp(a); |
|
|
843 |
} |
|
|
844 |
|
|
|
845 |
/* generate a test. set 'inv' to invert test. Stack entry is popped */ |
|
|
846 |
int gtst(int inv, int t) |
|
|
847 |
{ |
|
|
848 |
int v, r; |
|
|
849 |
unsigned long op; |
|
|
850 |
v = vtop->r & VT_VALMASK; |
|
|
851 |
r=ind; |
|
|
852 |
if (v == VT_CMP) { |
|
|
853 |
op=mapcc(inv?negcc(vtop->c.i):vtop->c.i); |
|
|
854 |
op|=encbranch(r,t,1); |
|
|
855 |
o(op); |
|
|
856 |
t=r; |
|
|
857 |
} else if (v == VT_JMP || v == VT_JMPI) { |
|
|
858 |
if ((v & 1) == inv) { |
|
|
859 |
if(!vtop->c.i) |
|
|
860 |
vtop->c.i=t; |
|
|
861 |
else { |
|
|
862 |
unsigned long *x; |
|
|
863 |
int p,lp; |
|
|
864 |
if(t) { |
|
|
865 |
p = vtop->c.i; |
|
|
866 |
do { |
|
|
867 |
p = decbranch(lp=p); |
|
|
868 |
} while(p); |
|
|
869 |
x = (unsigned long *)(cur_text_section->data + lp); |
|
|
870 |
*x &= 0xff000000; |
|
|
871 |
*x |= encbranch(lp,t,1); |
|
|
872 |
} |
|
|
873 |
t = vtop->c.i; |
|
|
874 |
} |
|
|
875 |
} else { |
|
|
876 |
t = gjmp(t); |
|
|
877 |
gsym(vtop->c.i); |
|
|
878 |
} |
|
|
879 |
} else { |
|
|
880 |
if (is_float(vtop->type.t)) { |
|
|
881 |
r=gv(RC_FLOAT); |
|
|
882 |
o(0xEE90F118|fpr(r)<<16); |
|
|
883 |
vtop->r = VT_CMP; |
|
|
884 |
vtop->c.i = TOK_NE; |
|
|
885 |
return gtst(inv, t); |
|
|
886 |
} else if ((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) { |
|
|
887 |
/* constant jmp optimization */ |
|
|
888 |
if ((vtop->c.i != 0) != inv) |
|
|
889 |
t = gjmp(t); |
|
|
890 |
} else { |
|
|
891 |
v = gv(RC_INT); |
|
|
892 |
o(0xE3300000|(intr(v)<<16)); |
|
|
893 |
vtop->r = VT_CMP; |
|
|
894 |
vtop->c.i = TOK_NE; |
|
|
895 |
return gtst(inv, t); |
|
|
896 |
} |
|
|
897 |
} |
|
|
898 |
vtop--; |
|
|
899 |
return t; |
|
|
900 |
} |
|
|
901 |
|
|
|
902 |
/* generate an integer binary operation */ |
|
|
903 |
void gen_opi(int op) |
|
|
904 |
{ |
|
|
905 |
int c, func = 0; |
|
|
906 |
unsigned long opc = 0,r,fr; |
|
|
907 |
|
|
|
908 |
c=0; |
|
|
909 |
switch(op) { |
|
|
910 |
case '+': |
|
|
911 |
opc = 0x8; |
|
|
912 |
c=1; |
|
|
913 |
break; |
|
|
914 |
case TOK_ADDC1: /* add with carry generation */ |
|
|
915 |
opc = 0x9; |
|
|
916 |
c=1; |
|
|
917 |
break; |
|
|
918 |
case '-': |
|
|
919 |
opc = 0x4; |
|
|
920 |
c=1; |
|
|
921 |
break; |
|
|
922 |
case TOK_SUBC1: /* sub with carry generation */ |
|
|
923 |
opc = 0x5; |
|
|
924 |
c=1; |
|
|
925 |
break; |
|
|
926 |
case TOK_ADDC2: /* add with carry use */ |
|
|
927 |
opc = 0xA; |
|
|
928 |
c=1; |
|
|
929 |
break; |
|
|
930 |
case TOK_SUBC2: /* sub with carry use */ |
|
|
931 |
opc = 0xC; |
|
|
932 |
c=1; |
|
|
933 |
break; |
|
|
934 |
case '&': |
|
|
935 |
opc = 0x0; |
|
|
936 |
c=1; |
|
|
937 |
break; |
|
|
938 |
case '^': |
|
|
939 |
opc = 0x2; |
|
|
940 |
c=1; |
|
|
941 |
break; |
|
|
942 |
case '|': |
|
|
943 |
opc = 0x18; |
|
|
944 |
c=1; |
|
|
945 |
break; |
|
|
946 |
case '*': |
|
|
947 |
gv2(RC_INT, RC_INT); |
|
|
948 |
r = vtop[-1].r; |
|
|
949 |
fr = vtop[0].r; |
|
|
950 |
vtop--; |
|
|
951 |
o(0xE0000090|(intr(r)<<16)|(intr(r)<<8)|intr(fr)); |
|
|
952 |
return; |
|
|
953 |
case TOK_SHL: |
|
|
954 |
opc = 0; |
|
|
955 |
c=2; |
|
|
956 |
break; |
|
|
957 |
case TOK_SHR: |
|
|
958 |
opc = 1; |
|
|
959 |
c=2; |
|
|
960 |
break; |
|
|
961 |
case TOK_SAR: |
|
|
962 |
opc = 2; |
|
|
963 |
c=2; |
|
|
964 |
break; |
|
|
965 |
case '/': |
|
|
966 |
case TOK_PDIV: |
|
|
967 |
func=TOK___divsi3; |
|
|
968 |
c=3; |
|
|
969 |
break; |
|
|
970 |
case TOK_UDIV: |
|
|
971 |
func=TOK___udivsi3; |
|
|
972 |
c=3; |
|
|
973 |
break; |
|
|
974 |
case '%': |
|
|
975 |
func=TOK___modsi3; |
|
|
976 |
c=3; |
|
|
977 |
break; |
|
|
978 |
case TOK_UMOD: |
|
|
979 |
func=TOK___umodsi3; |
|
|
980 |
c=3; |
|
|
981 |
break; |
|
|
982 |
case TOK_UMULL: |
|
|
983 |
gv2(RC_INT, RC_INT); |
|
|
984 |
r=intr(vtop[-1].r2=get_reg(RC_INT)); |
|
|
985 |
c=vtop[-1].r; |
|
|
986 |
vtop[-1].r=get_reg_ex(RC_INT,regmask(c)); |
|
|
987 |
vtop--; |
|
|
988 |
o(0xE0800090|(r<<16)|(intr(vtop->r)<<12)|(intr(c)<<8)|intr(vtop[1].r)); |
|
|
989 |
return; |
|
|
990 |
default: |
|
|
991 |
opc = 0x15; |
|
|
992 |
c=1; |
|
|
993 |
break; |
|
|
994 |
} |
|
|
995 |
switch(c) { |
|
|
996 |
case 1: |
|
|
997 |
if((vtop[-1].r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) { |
|
|
998 |
if(opc == 4 || opc == 5 || opc == 0xc) { |
|
|
999 |
vswap(); |
|
|
1000 |
opc|=2; // sub -> rsb |
|
|
1001 |
} |
|
|
1002 |
} |
|
|
1003 |
if ((vtop->r & VT_VALMASK) == VT_CMP || |
|
|
1004 |
(vtop->r & (VT_VALMASK & ~1)) == VT_JMP) |
|
|
1005 |
gv(RC_INT); |
|
|
1006 |
vswap(); |
|
|
1007 |
c=intr(gv(RC_INT)); |
|
|
1008 |
vswap(); |
|
|
1009 |
opc=0xE0000000|(opc<<20)|(c<<16); |
|
|
1010 |
if((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) { |
|
|
1011 |
unsigned long x; |
|
|
1012 |
x=stuff_const(opc|0x2000000,vtop->c.i); |
|
|
1013 |
if(x) { |
|
|
1014 |
r=intr(vtop[-1].r=get_reg_ex(RC_INT,regmask(vtop[-1].r))); |
|
|
1015 |
o(x|(r<<12)); |
|
|
1016 |
goto done; |
|
|
1017 |
} |
|
|
1018 |
} |
|
|
1019 |
fr=intr(gv(RC_INT)); |
|
|
1020 |
r=intr(vtop[-1].r=get_reg_ex(RC_INT,two2mask(vtop->r,vtop[-1].r))); |
|
|
1021 |
o(opc|(r<<12)|fr); |
|
|
1022 |
done: |
|
|
1023 |
vtop--; |
|
|
1024 |
if (op >= TOK_ULT && op <= TOK_GT) { |
|
|
1025 |
vtop->r = VT_CMP; |
|
|
1026 |
vtop->c.i = op; |
|
|
1027 |
} |
|
|
1028 |
break; |
|
|
1029 |
case 2: |
|
|
1030 |
opc=0xE1A00000|(opc<<5); |
|
|
1031 |
if ((vtop->r & VT_VALMASK) == VT_CMP || |
|
|
1032 |
(vtop->r & (VT_VALMASK & ~1)) == VT_JMP) |
|
|
1033 |
gv(RC_INT); |
|
|
1034 |
vswap(); |
|
|
1035 |
r=intr(gv(RC_INT)); |
|
|
1036 |
vswap(); |
|
|
1037 |
opc|=r; |
|
|
1038 |
if ((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) == VT_CONST) { |
|
|
1039 |
fr=intr(vtop[-1].r=get_reg_ex(RC_INT,regmask(vtop[-1].r))); |
|
|
1040 |
c = vtop->c.i & 0x1f; |
|
|
1041 |
o(opc|(c<<7)|(fr<<12)); |
|
|
1042 |
} else { |
|
|
1043 |
fr=intr(gv(RC_INT)); |
|
|
1044 |
c=intr(vtop[-1].r=get_reg_ex(RC_INT,two2mask(vtop->r,vtop[-1].r))); |
|
|
1045 |
o(opc|(c<<12)|(fr<<8)|0x10); |
|
|
1046 |
} |
|
|
1047 |
vtop--; |
|
|
1048 |
break; |
|
|
1049 |
case 3: |
|
|
1050 |
vpush_global_sym(&func_old_type, func); |
|
|
1051 |
vrott(3); |
|
|
1052 |
gfunc_call(2); |
|
|
1053 |
vpushi(0); |
|
|
1054 |
vtop->r = REG_IRET; |
|
|
1055 |
break; |
|
|
1056 |
default: |
|
|
1057 |
error("gen_opi %i unimplemented!",op); |
|
|
1058 |
} |
|
|
1059 |
} |
|
|
1060 |
|
|
|
1061 |
static int is_fconst() |
|
|
1062 |
{ |
|
|
1063 |
long double f; |
|
|
1064 |
int r; |
|
|
1065 |
if((vtop->r & (VT_VALMASK | VT_LVAL | VT_SYM)) != VT_CONST) |
|
|
1066 |
return 0; |
|
|
1067 |
if (vtop->type.t == VT_FLOAT) |
|
|
1068 |
f = vtop->c.f; |
|
|
1069 |
else if (vtop->type.t == VT_DOUBLE) |
|
|
1070 |
f = vtop->c.d; |
|
|
1071 |
else |
|
|
1072 |
f = vtop->c.ld; |
|
|
1073 |
if(!ieee_finite(f)) |
|
|
1074 |
return 0; |
|
|
1075 |
r=0x8; |
|
|
1076 |
if(f<0.0) { |
|
|
1077 |
r=0x18; |
|
|
1078 |
f=-f; |
|
|
1079 |
} |
|
|
1080 |
if(f==0.0) |
|
|
1081 |
return r; |
|
|
1082 |
if(f==1.0) |
|
|
1083 |
return r|1; |
|
|
1084 |
if(f==2.0) |
|
|
1085 |
return r|2; |
|
|
1086 |
if(f==3.0) |
|
|
1087 |
return r|3; |
|
|
1088 |
if(f==4.0) |
|
|
1089 |
return r|4; |
|
|
1090 |
if(f==5.0) |
|
|
1091 |
return r|5; |
|
|
1092 |
if(f==0.5) |
|
|
1093 |
return r|6; |
|
|
1094 |
if(f==10.0) |
|
|
1095 |
return r|7; |
|
|
1096 |
return 0; |
|
|
1097 |
} |
|
|
1098 |
|
|
|
1099 |
/* generate a floating point operation 'v = t1 op t2' instruction. The |
|
|
1100 |
two operands are guaranted to have the same floating point type */ |
|
|
1101 |
void gen_opf(int op) |
|
|
1102 |
{ |
|
|
1103 |
unsigned long x; |
|
|
1104 |
int r,r2,c1,c2; |
|
|
1105 |
//fputs("gen_opf\n",stderr); |
|
|
1106 |
vswap(); |
|
|
1107 |
c1 = is_fconst(); |
|
|
1108 |
vswap(); |
|
|
1109 |
c2 = is_fconst(); |
|
|
1110 |
x=0xEE000100; |
|
|
1111 |
#if LDOUBLE_SIZE == 8 |
|
|
1112 |
if ((vtop->type.t & VT_BTYPE) != VT_FLOAT) |
|
|
1113 |
x|=0x80; |
|
|
1114 |
#else |
|
|
1115 |
if ((vtop->type.t & VT_BTYPE) == VT_DOUBLE) |
|
|
1116 |
x|=0x80; |
|
|
1117 |
else if ((vtop->type.t & VT_BTYPE) == VT_LDOUBLE) |
|
|
1118 |
x|=0x80000; |
|
|
1119 |
#endif |
|
|
1120 |
switch(op) |
|
|
1121 |
{ |
|
|
1122 |
case '+': |
|
|
1123 |
if(!c2) { |
|
|
1124 |
vswap(); |
|
|
1125 |
c2=c1; |
|
|
1126 |
} |
|
|
1127 |
vswap(); |
|
|
1128 |
r=fpr(gv(RC_FLOAT)); |
|
|
1129 |
vswap(); |
|
|
1130 |
if(c2) { |
|
|
1131 |
if(c2>0xf) |
|
|
1132 |
x|=0x200000; // suf |
|
|
1133 |
r2=c2&0xf; |
|
|
1134 |
} else { |
|
|
1135 |
r2=fpr(gv(RC_FLOAT)); |
|
|
1136 |
} |
|
|
1137 |
break; |
|
|
1138 |
case '-': |
|
|
1139 |
if(c2) { |
|
|
1140 |
if(c2<=0xf) |
|
|
1141 |
x|=0x200000; // suf |
|
|
1142 |
r2=c2&0xf; |
|
|
1143 |
vswap(); |
|
|
1144 |
r=fpr(gv(RC_FLOAT)); |
|
|
1145 |
vswap(); |
|
|
1146 |
} else if(c1 && c1<=0xf) { |
|
|
1147 |
x|=0x300000; // rsf |
|
|
1148 |
r2=c1; |
|
|
1149 |
r=fpr(gv(RC_FLOAT)); |
|
|
1150 |
vswap(); |
|
|
1151 |
} else { |
|
|
1152 |
x|=0x200000; // suf |
|
|
1153 |
vswap(); |
|
|
1154 |
r=fpr(gv(RC_FLOAT)); |
|
|
1155 |
vswap(); |
|
|
1156 |
r2=fpr(gv(RC_FLOAT)); |
|
|
1157 |
} |
|
|
1158 |
break; |
|
|
1159 |
case '*': |
|
|
1160 |
if(!c2 || c2>0xf) { |
|
|
1161 |
vswap(); |
|
|
1162 |
c2=c1; |
|
|
1163 |
} |
|
|
1164 |
vswap(); |
|
|
1165 |
r=fpr(gv(RC_FLOAT)); |
|
|
1166 |
vswap(); |
|
|
1167 |
if(c2 && c2<=0xf) |
|
|
1168 |
r2=c2; |
|
|
1169 |
else |
|
|
1170 |
r2=fpr(gv(RC_FLOAT)); |
|
|
1171 |
x|=0x100000; // muf |
|
|
1172 |
break; |
|
|
1173 |
case '/': |
|
|
1174 |
if(c2 && c2<=0xf) { |
|
|
1175 |
x|=0x400000; // dvf |
|
|
1176 |
r2=c2; |
|
|
1177 |
vswap(); |
|
|
1178 |
r=fpr(gv(RC_FLOAT)); |
|
|
1179 |
vswap(); |
|
|
1180 |
} else if(c1 && c1<=0xf) { |
|
|
1181 |
x|=0x500000; // rdf |
|
|
1182 |
r2=c1; |
|
|
1183 |
r=fpr(gv(RC_FLOAT)); |
|
|
1184 |
vswap(); |
|
|
1185 |
} else { |
|
|
1186 |
x|=0x400000; // dvf |
|
|
1187 |
vswap(); |
|
|
1188 |
r=fpr(gv(RC_FLOAT)); |
|
|
1189 |
vswap(); |
|
|
1190 |
r2=fpr(gv(RC_FLOAT)); |
|
|
1191 |
} |
|
|
1192 |
break; |
|
|
1193 |
default: |
|
|
1194 |
if(op >= TOK_ULT && op <= TOK_GT) { |
|
|
1195 |
x|=0xd0f110; // cmfe |
|
|
1196 |
switch(op) { |
|
|
1197 |
case TOK_ULT: |
|
|
1198 |
case TOK_UGE: |
|
|
1199 |
case TOK_ULE: |
|
|
1200 |
case TOK_UGT: |
|
|
1201 |
fputs("unsigned comparision on floats?\n",stderr); |
|
|
1202 |
break; |
|
|
1203 |
case TOK_LT: |
|
|
1204 |
op=TOK_ULT; |
|
|
1205 |
break; |
|
|
1206 |
case TOK_GE: |
|
|
1207 |
op=TOK_UGE; |
|
|
1208 |
break; |
|
|
1209 |
case TOK_LE: |
|
|
1210 |
op=TOK_ULE; |
|
|
1211 |
break; |
|
|
1212 |
case TOK_GT: |
|
|
1213 |
op=TOK_UGT; |
|
|
1214 |
break; |
|
|
1215 |
case TOK_EQ: |
|
|
1216 |
case TOK_NE: |
|
|
1217 |
x&=~0x400000; // cmfe -> cmf |
|
|
1218 |
break; |
|
|
1219 |
} |
|
|
1220 |
if(c1 && !c2) { |
|
|
1221 |
c2=c1; |
|
|
1222 |
vswap(); |
|
|
1223 |
switch(op) { |
|
|
1224 |
case TOK_ULT: |
|
|
1225 |
op=TOK_UGT; |
|
|
1226 |
break; |
|
|
1227 |
case TOK_UGE: |
|
|
1228 |
op=TOK_ULE; |
|
|
1229 |
break; |
|
|
1230 |
case TOK_ULE: |
|
|
1231 |
op=TOK_UGE; |
|
|
1232 |
break; |
|
|
1233 |
case TOK_UGT: |
|
|
1234 |
op=TOK_ULT; |
|
|
1235 |
break; |
|
|
1236 |
} |
|
|
1237 |
} |
|
|
1238 |
// bug (intention?) in Linux FPU emulator |
|
|
1239 |
// doesn't set carry if equal |
|
|
1240 |
if(op==TOK_ULT) |
|
|
1241 |
op=TOK_LT; |
|
|
1242 |
else if(op==TOK_UGE) |
|
|
1243 |
op=TOK_GE; |
|
|
1244 |
vswap(); |
|
|
1245 |
r=fpr(gv(RC_FLOAT)); |
|
|
1246 |
vswap(); |
|
|
1247 |
if(c2) { |
|
|
1248 |
if(c2>0xf) |
|
|
1249 |
x|=0x200000; |
|
|
1250 |
r2=c2&0xf; |
|
|
1251 |
} else { |
|
|
1252 |
r2=fpr(gv(RC_FLOAT)); |
|
|
1253 |
} |
|
|
1254 |
vtop[-1].r = VT_CMP; |
|
|
1255 |
vtop[-1].c.i = op; |
|
|
1256 |
} else { |
|
|
1257 |
error("unknown fp op %x!\n",op); |
|
|
1258 |
return; |
|
|
1259 |
} |
|
|
1260 |
} |
|
|
1261 |
if(vtop[-1].r == VT_CMP) |
|
|
1262 |
c1=15; |
|
|
1263 |
else { |
|
|
1264 |
c1=vtop->r; |
|
|
1265 |
if(r2&0x8) |
|
|
1266 |
c1=vtop[-1].r; |
|
|
1267 |
vtop[-1].r=get_reg_ex(RC_FLOAT,two2mask(vtop[-1].r,c1)); |
|
|
1268 |
c1=fpr(vtop[-1].r); |
|
|
1269 |
} |
|
|
1270 |
vtop--; |
|
|
1271 |
o(x|(r<<16)|(c1<<12)|r2); |
|
|
1272 |
} |
|
|
1273 |
|
|
|
1274 |
/* convert integers to fp 't' type. Must handle 'int', 'unsigned int' |
|
|
1275 |
and 'long long' cases. */ |
|
|
1276 |
void gen_cvt_itof(int t) |
|
|
1277 |
{ |
|
|
1278 |
int r,r2,bt; |
|
|
1279 |
bt=vtop->type.t & VT_BTYPE; |
|
|
1280 |
if(bt == VT_INT || bt == VT_SHORT || bt == VT_BYTE) { |
|
|
1281 |
r=intr(gv(RC_INT)); |
|
|
1282 |
r2=fpr(vtop->r=get_reg(RC_FLOAT)); |
|
|
1283 |
o(0xEE000190|(r2<<16)|(r<<12)); |
|
|
1284 |
if((vtop->type.t & (VT_UNSIGNED|VT_BTYPE)) == (VT_UNSIGNED|VT_INT)) { |
|
|
1285 |
unsigned int off=0; |
|
|
1286 |
o(0xE3500000|(r<<12)); |
|
|
1287 |
r=fpr(get_reg(RC_FLOAT)); |
|
|
1288 |
if(last_itod_magic) { |
|
|
1289 |
off=ind+8-last_itod_magic; |
|
|
1290 |
off/=4; |
|
|
1291 |
if(off>255) |
|
|
1292 |
off=0; |
|
|
1293 |
} |
|
|
1294 |
o(0xBD1F8100|(r<<12)|off); |
|
|
1295 |
if(!off) { |
|
|
1296 |
o(0xEA000001); |
|
|
1297 |
last_itod_magic=ind; |
|
|
1298 |
o(0x41F00000); |
|
|
1299 |
o(0); |
|
|
1300 |
} |
|
|
1301 |
o(0xBE000180|(r2<<16)|(r2<<12)|r); |
|
|
1302 |
} |
|
|
1303 |
return; |
|
|
1304 |
} else if(bt == VT_LLONG) { |
|
|
1305 |
int func; |
|
|
1306 |
if(vtop->type.t & VT_UNSIGNED) |
|
|
1307 |
func=TOK___ulltold; |
|
|
1308 |
else |
|
|
1309 |
func=TOK___slltold; |
|
|
1310 |
vpush_global_sym(&func_old_type, func); |
|
|
1311 |
vswap(); |
|
|
1312 |
gfunc_call(1); |
|
|
1313 |
vpushi(0); |
|
|
1314 |
vtop->r=TREG_F0; |
|
|
1315 |
return; |
|
|
1316 |
} |
|
|
1317 |
error("unimplemented gen_cvt_itof %x!",vtop->type.t); |
|
|
1318 |
} |
|
|
1319 |
|
|
|
1320 |
/* convert fp to int 't' type */ |
|
|
1321 |
void gen_cvt_ftoi(int t) |
|
|
1322 |
{ |
|
|
1323 |
int r,r2,u,func=0; |
|
|
1324 |
u=t&VT_UNSIGNED; |
|
|
1325 |
t&=VT_BTYPE; |
|
|
1326 |
r2=vtop->type.t & VT_BTYPE; |
|
|
1327 |
if(t==VT_INT) { |
|
|
1328 |
if(u) { |
|
|
1329 |
if(r2 == VT_FLOAT) |
|
|
1330 |
func=TOK___fixunssfsi; |
|
|
1331 |
else if(r2 == VT_DOUBLE) |
|
|
1332 |
func=TOK___fixunsdfsi; |
|
|
1333 |
else if(r2 == VT_LDOUBLE) |
|
|
1334 |
#if LDOUBLE_SIZE == 8 |
|
|
1335 |
func=TOK___fixunsdfsi; |
|
|
1336 |
#else |
|
|
1337 |
func=TOK___fixunsxfsi; |
|
|
1338 |
#endif |
|
|
1339 |
} else { |
|
|
1340 |
r=fpr(gv(RC_FLOAT)); |
|
|
1341 |
r2=intr(vtop->r=get_reg(RC_INT)); |
|
|
1342 |
o(0xEE100170|(r2<<12)|r); |
|
|
1343 |
return; |
|
|
1344 |
} |
|
|
1345 |
} else if(t == VT_LLONG) { // unsigned handled in gen_cvt_ftoi1 |
|
|
1346 |
if(r2 == VT_FLOAT) |
|
|
1347 |
func=TOK___fixsfdi; |
|
|
1348 |
else if(r2 == VT_DOUBLE) |
|
|
1349 |
func=TOK___fixdfdi; |
|
|
1350 |
else if(r2 == VT_LDOUBLE) |
|
|
1351 |
#if LDOUBLE_SIZE == 8 |
|
|
1352 |
func=TOK___fixdfdi; |
|
|
1353 |
#else |
|
|
1354 |
func=TOK___fixxfdi; |
|
|
1355 |
#endif |
|
|
1356 |
} |
|
|
1357 |
if(func) { |
|
|
1358 |
vpush_global_sym(&func_old_type, func); |
|
|
1359 |
vswap(); |
|
|
1360 |
gfunc_call(1); |
|
|
1361 |
vpushi(0); |
|
|
1362 |
if(t == VT_LLONG) |
|
|
1363 |
vtop->r2 = REG_LRET; |
|
|
1364 |
vtop->r = REG_IRET; |
|
|
1365 |
return; |
|
|
1366 |
} |
|
|
1367 |
error("unimplemented gen_cvt_ftoi!"); |
|
|
1368 |
} |
|
|
1369 |
|
|
|
1370 |
/* convert from one floating point type to another */ |
|
|
1371 |
void gen_cvt_ftof(int t) |
|
|
1372 |
{ |
|
|
1373 |
/* all we have to do on i386 and ARM is to put the float in a register */ |
|
|
1374 |
gv(RC_FLOAT); |
|
|
1375 |
} |
|
|
1376 |
|
|
|
1377 |
/* computed goto support */ |
|
|
1378 |
void ggoto(void) |
|
|
1379 |
{ |
|
|
1380 |
gcall_or_jmp(1); |
|
|
1381 |
vtop--; |
|
|
1382 |
} |
|
|
1383 |
|
|
|
1384 |
/* end of ARM code generator */ |
|
|
1385 |
/*************************************************************/ |
|
|
1386 |
|