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ARMv7 support.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3572 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-11-11 00:04:49 +00:00
parent ee4e83ed8d
commit 9ee6e8bb85
35 changed files with 11799 additions and 653 deletions
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78
target-arm/op_helper.c
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@ -1,7 +1,7 @@
/*
* ARM helper routines
*
* Copyright (c) 2005 CodeSourcery, LLC
* Copyright (c) 2005-2007 CodeSourcery, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -175,6 +175,81 @@ void do_vfp_get_fpscr(void)
T0 |= vfp_exceptbits_from_host(i);
}
float32 helper_recps_f32(float32 a, float32 b)
{
float_status *s = &env->vfp.fp_status;
float32 two = int32_to_float32(2, s);
return float32_sub(two, float32_mul(a, b, s), s);
}
float32 helper_rsqrts_f32(float32 a, float32 b)
{
float_status *s = &env->vfp.fp_status;
float32 three = int32_to_float32(3, s);
return float32_sub(three, float32_mul(a, b, s), s);
}
/* TODO: The architecture specifies the value that the estimate functions
should return. We return the exact reciprocal/root instead. */
float32 helper_recpe_f32(float32 a)
{
float_status *s = &env->vfp.fp_status;
float32 one = int32_to_float32(1, s);
return float32_div(one, a, s);
}
float32 helper_rsqrte_f32(float32 a)
{
float_status *s = &env->vfp.fp_status;
float32 one = int32_to_float32(1, s);
return float32_div(one, float32_sqrt(a, s), s);
}
uint32_t helper_recpe_u32(uint32_t a)
{
float_status *s = &env->vfp.fp_status;
float32 tmp;
tmp = int32_to_float32(a, s);
tmp = float32_scalbn(tmp, -32, s);
tmp = helper_recpe_f32(tmp);
tmp = float32_scalbn(tmp, 31, s);
return float32_to_int32(tmp, s);
}
uint32_t helper_rsqrte_u32(uint32_t a)
{
float_status *s = &env->vfp.fp_status;
float32 tmp;
tmp = int32_to_float32(a, s);
tmp = float32_scalbn(tmp, -32, s);
tmp = helper_rsqrte_f32(tmp);
tmp = float32_scalbn(tmp, 31, s);
return float32_to_int32(tmp, s);
}
void helper_neon_tbl(int rn, int maxindex)
{
uint32_t val;
uint32_t mask;
uint32_t tmp;
int index;
int shift;
uint64_t *table;
table = (uint64_t *)&env->vfp.regs[rn];
val = 0;
mask = 0;
for (shift = 0; shift < 32; shift += 8) {
index = (T1 >> shift) & 0xff;
if (index <= maxindex) {
tmp = (table[index >> 3] >> (index & 7)) & 0xff;
val |= tmp << shift;
} else {
val |= T0 & (0xff << shift);
}
}
T0 = val;
}
#if !defined(CONFIG_USER_ONLY)
#define MMUSUFFIX _mmu
@ -227,5 +302,4 @@ void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
}
env = saved_env;
}
#endif