OSO/TinyCC
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tcc on i386 are still having problems at work.Thank Roy report again. Struck on several variables can be connected to commit in the register. I am worried whether tcc can run the os. Since my machine is ubuntu 64 bits I can test my machine.

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This commit is contained in:
jiang
2014-05-03 23:51:09 +08:00
parent a0d45c1bcd
commit 089dea355a
6 changed files with 33 additions and 39 deletions
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10
i386-gen.c
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@ -21,7 +21,7 @@
#ifdef TARGET_DEFS_ONLY
/* number of available registers */
#define NB_REGS 4
#define NB_REGS 8
#define NB_ASM_REGS 8
/* a register can belong to several classes. The classes must be
@ -41,7 +41,6 @@
#define RC_LRET RC_EDX /* function return: second integer register */
#define RC_FRET RC_ST0 /* function return: float register */
#define RC_MASK (RC_INT|RC_INT2|RC_FLOAT)
/* pretty names for the registers */
enum {
TREG_EAX = 0,
@ -104,8 +103,8 @@ ST_DATA const int reg_classes[NB_REGS] = {
RC_INT|RC_INT2|RC_EBX,
0,
/* st0 */ RC_FLOAT | RC_ST0,
RC_RSI|RC_INT2,
RC_RDI|RC_INT2,
RC_ESI|RC_INT2,
RC_EDI|RC_INT2,
};
static unsigned long func_sub_sp_offset;
@ -241,7 +240,7 @@ ST_FUNC void load(int r, SValue *sv)
if(fr & VT_TMP){
int size, align;
if((ft & VT_BTYPE) == VT_FUNC)
size = 4;
size = PTR_SIZE;
else
size = type_size(&sv->type, &align);
loc_stack(size, 0);
@ -254,6 +253,7 @@ ST_FUNC void load(int r, SValue *sv)
if (!(reg_classes[fr] & RC_INT))
fr = get_reg(RC_INT);
load(fr, &v1);
fc = 0;
}
if ((ft & VT_BTYPE) == VT_FLOAT) {
o(0xd9); /* flds */