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/*
* Tiny Code Generator for QEMU
*
* Copyright (c) 2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#define TCG_TARGET_HPPA 1
#if defined(_PA_RISC1_1)
#define TCG_TARGET_REG_BITS 32
#else
#error unsupported
#endif
#define TCG_TARGET_WORDS_BIGENDIAN
#define TCG_TARGET_NB_REGS 32
enum {
TCG_REG_R0 = 0,
TCG_REG_R1,
TCG_REG_RP,
TCG_REG_R3,
TCG_REG_R4,
TCG_REG_R5,
TCG_REG_R6,
TCG_REG_R7,
TCG_REG_R8,
TCG_REG_R9,
TCG_REG_R10,
TCG_REG_R11,
TCG_REG_R12,
TCG_REG_R13,
TCG_REG_R14,
TCG_REG_R15,
TCG_REG_R16,
TCG_REG_R17,
TCG_REG_R18,
TCG_REG_R19,
TCG_REG_R20,
TCG_REG_R21,
TCG_REG_R22,
TCG_REG_R23,
TCG_REG_R24,
TCG_REG_R25,
TCG_REG_R26,
TCG_REG_DP,
TCG_REG_RET0,
TCG_REG_RET1,
TCG_REG_SP,
TCG_REG_R31,
};
/* used for function call generation */
#define TCG_REG_CALL_STACK TCG_REG_SP
#define TCG_TARGET_STACK_ALIGN 16
#define TCG_TARGET_STACK_GROWSUP
/* optional instructions */
//#define TCG_TARGET_HAS_ext8s_i32
//#define TCG_TARGET_HAS_ext16s_i32
//#define TCG_TARGET_HAS_bswap16_i32
//#define TCG_TARGET_HAS_bswap32_i32
/* Note: must be synced with dyngen-exec.h */
#define TCG_AREG0 TCG_REG_R17
#define TCG_AREG1 TCG_REG_R14
#define TCG_AREG2 TCG_REG_R15
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
start &= ~31;
while (start <= stop)
{
asm volatile ("fdc 0(%0)\n"
"sync\n"
"fic 0(%%sr4, %0)\n"
"sync\n"
: : "r"(start) : "memory");
start += 32;
}
}
/* supplied by libgcc */
extern void *__canonicalize_funcptr_for_compare(void *);
/* Field selection types defined by hppa */
#define rnd(x) (((x)+0x1000)&~0x1fff)
/* lsel: select left 21 bits */
#define lsel(v,a) (((v)+(a))>>11)
/* rsel: select right 11 bits */
#define rsel(v,a) (((v)+(a))&0x7ff)
/* lrsel with rounding of addend to nearest 8k */
#define lrsel(v,a) (((v)+rnd(a))>>11)
/* rrsel with rounding of addend to nearest 8k */
#define rrsel(v,a) ((((v)+rnd(a))&0x7ff)+((a)-rnd(a)))
#define mask(x,sz) ((x) & ~((1<<(sz))-1))
static inline int reassemble_12(int as12)
{
return (((as12 & 0x800) >> 11) |
((as12 & 0x400) >> 8) |
((as12 & 0x3ff) << 3));
}
static inline int reassemble_14(int as14)
{
return (((as14 & 0x1fff) << 1) |
((as14 & 0x2000) >> 13));
}
static inline int reassemble_17(int as17)
{
return (((as17 & 0x10000) >> 16) |
((as17 & 0x0f800) << 5) |
((as17 & 0x00400) >> 8) |
((as17 & 0x003ff) << 3));
}
static inline int reassemble_21(int as21)
{
return (((as21 & 0x100000) >> 20) |
((as21 & 0x0ffe00) >> 8) |
((as21 & 0x000180) << 7) |
((as21 & 0x00007c) << 14) |
((as21 & 0x000003) << 12));
}
static inline void hppa_patch21l(uint32_t *insn, int val, int addend)
{
val = lrsel(val, addend);
*insn = mask(*insn, 21) | reassemble_21(val);
}
static inline void hppa_patch14r(uint32_t *insn, int val, int addend)
{
val = rrsel(val, addend);
*insn = mask(*insn, 14) | reassemble_14(val);
}
static inline void hppa_patch17r(uint32_t *insn, int val, int addend)
{
val = rrsel(val, addend);
*insn = (*insn & ~0x1f1ffd) | reassemble_17(val);
}
static inline void hppa_patch21l_dprel(uint32_t *insn, int val, int addend)
{
register unsigned int dp asm("r27");
hppa_patch21l(insn, val - dp, addend);
}
static inline void hppa_patch14r_dprel(uint32_t *insn, int val, int addend)
{
register unsigned int dp asm("r27");
hppa_patch14r(insn, val - dp, addend);
}
static inline void hppa_patch17f(uint32_t *insn, int val, int addend)
{
int dot = (int)insn & ~0x3;
int v = ((val + addend) - dot - 8) / 4;
if (v > (1 << 16) || v < -(1 << 16)) {
printf("cannot fit branch to offset %d [%08x->%08x]\n", v, dot, val);
abort();
}
*insn = (*insn & ~0x1f1ffd) | reassemble_17(v);
}
static inline void hppa_load_imm21l(uint32_t *insn, int val, int addend)
{
/* Transform addil L'sym(%dp) to ldil L'val, %r1 */
*insn = 0x20200000 | reassemble_21(lrsel(val, 0));
}
static inline void hppa_load_imm14r(uint32_t *insn, int val, int addend)
{
/* Transform ldw R'sym(%r1), %rN to ldo R'sym(%r1), %rN */
hppa_patch14r(insn, val, addend);
/* HACK */
if (addend == 0)
*insn = (*insn & ~0xfc000000) | (0x0d << 26);
}
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