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-rw-r--r--sim/sh/interp.c1195
1 files changed, 891 insertions, 304 deletions
diff --git a/sim/sh/interp.c b/sim/sh/interp.c
index 4d7c5cf..1844227 100644
--- a/sim/sh/interp.c
+++ b/sim/sh/interp.c
@@ -52,6 +52,8 @@
#define SIGTRAP 5
#endif
+extern unsigned char sh_jump_table[], sh_dsp_table[0x1000], ppi_table[];
+
#define O_RECOMPILE 85
#define DEFINE_TABLE
#define DISASSEMBLER_TABLE
@@ -65,27 +67,31 @@ typedef union
struct
{
- /* On targets like sparc-sun-solaris, fregs will be aligned on a 64 bit
- boundary (because of the d member). To avoid padding between
- registers - which whould make the job of sim_fetch_register harder,
- we add padding at the start. */
- int pad_dummy;
int regs[16];
int pc;
- int pr;
-
- int gbr;
- int vbr;
- int mach;
- int macl;
-
- int sr;
-
- int fpul;
-
- int fpscr;
- /* sh3e */
+ /* System registers. For sh-dsp this also includes A0 / X0 / X1 / Y0 / Y1
+ which are located in fregs, i.e. strictly speaking, these are
+ out-of-bounds accesses of sregs.i . This wart of the code could be
+ fixed by making fregs part of sregs, and including pc too - to avoid
+ alignment repercussions - but this would cause very onerous union /
+ structure nesting, which would only be managable with anonymous
+ unions and structs. */
+ union
+ {
+ struct
+ {
+ int mach;
+ int macl;
+ int pr;
+ int dummy3, dummy4;
+ int fpul; /* A1 for sh-dsp - but only for movs etc. */
+ int fpscr; /* dsr for sh-dsp */
+ } named;
+ int i[7];
+ } sregs;
+
+ /* sh3e / sh-dsp */
union fregs_u
{
float f[16];
@@ -94,10 +100,28 @@ typedef union
}
fregs[2];
- int ssr;
- int spc;
- /* sh3 */
- int bank[2][8];
+ /* Control registers; on the SH4, ldc / stc is privileged, except when
+ accessing gbr. */
+ union
+ {
+ struct
+ {
+ int sr;
+ int gbr;
+ int vbr;
+ int ssr;
+ int spc;
+ int mod;
+ /* sh-dsp */
+ int rs;
+ int re;
+ /* sh3 */
+ int bank[8];
+ } named;
+ int i[16];
+ } cregs;
+
+ unsigned char *insn_end;
int ticks;
int stalls;
@@ -117,6 +141,11 @@ typedef union
int profile;
unsigned short *profile_hist;
unsigned char *memory;
+ int xyram_select, xram_start, yram_start;
+ unsigned char *xmem;
+ unsigned char *ymem;
+ unsigned char *xmem_offset;
+ unsigned char *ymem_offset;
}
asregs;
int asints[40];
@@ -124,16 +153,18 @@ typedef union
saved_state_type saved_state;
+struct loop_bounds { unsigned char *start, *end; };
/* These variables are at file scope so that functions other than
sim_resume can use the fetch/store macros */
static int target_little_endian;
+static int global_endianw, endianb;
+static int target_dsp;
static int host_little_endian;
#if 1
-static int maskl = ~0;
-static int maskw = ~0;
+static int maskw = 0;
#endif
static SIM_OPEN_KIND sim_kind;
@@ -150,27 +181,32 @@ static char *myname;
#define UR (unsigned int)R
#define UR (unsigned int)R
#define SR0 saved_state.asregs.regs[0]
-#define GBR saved_state.asregs.gbr
-#define VBR saved_state.asregs.vbr
-#define SSR saved_state.asregs.ssr
-#define SPC saved_state.asregs.spc
-#define MACH saved_state.asregs.mach
-#define MACL saved_state.asregs.macl
-#define FPUL saved_state.asregs.fpul
+#define CREG(n) (saved_state.asregs.cregs.i[(n)])
+#define GBR saved_state.asregs.cregs.named.gbr
+#define VBR saved_state.asregs.cregs.named.vbr
+#define SSR saved_state.asregs.cregs.named.ssr
+#define SPC saved_state.asregs.cregs.named.spc
+#define SREG(n) (saved_state.asregs.sregs.i[(n)])
+#define MACH saved_state.asregs.sregs.named.mach
+#define MACL saved_state.asregs.sregs.named.macl
+#define PR saved_state.asregs.sregs.named.pr
+#define FPUL saved_state.asregs.sregs.named.fpul
-#define PC pc
+#define PC insn_ptr
-/* Alternate bank of registers r0-r6 */
+/* Alternate bank of registers r0-r7 */
/* Note: code controling SR handles flips between BANK0 and BANK1 */
-#define Rn_BANK(n) (saved_state.asregs.bank[!SR_RB][(n)])
-#define SET_Rn_BANK(n, EXP) do { saved_state.asregs.bank[!SR_RB][(n)] = (EXP); } while (0)
+#define Rn_BANK(n) (saved_state.asregs.cregs.named.bank[(n)])
+#define SET_Rn_BANK(n, EXP) do { saved_state.asregs.cregs.named.bank[(n)] = (EXP); } while (0)
/* Manipulate SR */
+#define SR_MASK_DMY (1 << 11)
+#define SR_MASK_DMX (1 << 10)
#define SR_MASK_M (1 << 9)
#define SR_MASK_Q (1 << 8)
#define SR_MASK_I (0xf << 4)
@@ -180,23 +216,28 @@ static char *myname;
#define SR_MASK_BL (1 << 28)
#define SR_MASK_RB (1 << 29)
#define SR_MASK_MD (1 << 30)
+#define SR_MASK_RC 0x0fff0000
+#define SR_RC_INCREMENT -0x00010000
-#define M ((saved_state.asregs.sr & SR_MASK_M) != 0)
-#define Q ((saved_state.asregs.sr & SR_MASK_Q) != 0)
-#define S ((saved_state.asregs.sr & SR_MASK_S) != 0)
-#define T ((saved_state.asregs.sr & SR_MASK_T) != 0)
+#define M ((saved_state.asregs.cregs.named.sr & SR_MASK_M) != 0)
+#define Q ((saved_state.asregs.cregs.named.sr & SR_MASK_Q) != 0)
+#define S ((saved_state.asregs.cregs.named.sr & SR_MASK_S) != 0)
+#define T ((saved_state.asregs.cregs.named.sr & SR_MASK_T) != 0)
-#define SR_BL ((saved_state.asregs.sr & SR_MASK_BL) != 0)
-#define SR_RB ((saved_state.asregs.sr & SR_MASK_RB) != 0)
-#define SR_MD ((saved_state.asregs.sr & SR_MASK_MD) != 0)
+#define SR_BL ((saved_state.asregs.cregs.named.sr & SR_MASK_BL) != 0)
+#define SR_RB ((saved_state.asregs.cregs.named.sr & SR_MASK_RB) != 0)
+#define SR_MD ((saved_state.asregs.cregs.named.sr & SR_MASK_MD) != 0)
+#define SR_DMY ((saved_state.asregs.cregs.named.sr & SR_MASK_DMY) != 0)
+#define SR_DMX ((saved_state.asregs.cregs.named.sr & SR_MASK_DMX) != 0)
+#define SR_RC ((saved_state.asregs.cregs.named.sr & SR_MASK_RC))
/* Note: don't use this for privileged bits */
#define SET_SR_BIT(EXP, BIT) \
do { \
if ((EXP) & 1) \
- saved_state.asregs.sr |= (BIT); \
+ saved_state.asregs.cregs.named.sr |= (BIT); \
else \
- saved_state.asregs.sr &= ~(BIT); \
+ saved_state.asregs.cregs.named.sr &= ~(BIT); \
} while (0)
#define SET_SR_M(EXP) SET_SR_BIT ((EXP), SR_MASK_M)
@@ -204,28 +245,14 @@ do { \
#define SET_SR_S(EXP) SET_SR_BIT ((EXP), SR_MASK_S)
#define SET_SR_T(EXP) SET_SR_BIT ((EXP), SR_MASK_T)
-#define GET_SR() (saved_state.asregs.sr - 0)
+/* stc currently relies on being able to read SR without modifications. */
+#define GET_SR() (saved_state.asregs.cregs.named.sr - 0)
+
#define SET_SR(x) set_sr (x)
-static void
-set_sr (new_sr)
- int new_sr;
-{
- /* do we need to swap banks */
- int old_gpr = (SR_MD ? !SR_RB : 0);
- int new_gpr = ((new_sr & SR_MASK_MD)
- ? (new_sr & SR_MASK_RB) == 0
- : 0);
- if (old_gpr != new_gpr)
- {
- int i;
- for (i = 0; i < 8; i++)
- {
- saved_state.asregs.bank[old_gpr][i] = saved_state.asregs.regs[i];
- saved_state.asregs.regs[i] = saved_state.asregs.bank[new_gpr][i];
- }
- }
-}
+#define SET_RC(x) \
+ (saved_state.asregs.cregs.named.sr \
+ = saved_state.asregs.cregs.named.sr & 0xf000ffff | ((x) & 0xfff) << 16)
/* Manipulate FPSCR */
@@ -241,10 +268,12 @@ static void
set_fpscr1 (x)
int x;
{
- int old = saved_state.asregs.fpscr;
- saved_state.asregs.fpscr = (x);
+ int old = saved_state.asregs.sregs.named.fpscr;
+ saved_state.asregs.sregs.named.fpscr = (x);
/* swap the floating point register banks */
- if ((saved_state.asregs.fpscr ^ old) & FPSCR_MASK_FR)
+ if ((saved_state.asregs.sregs.named.fpscr ^ old) & FPSCR_MASK_FR
+ /* Ignore bit change if simulating sh-dsp. */
+ && ! target_dsp)
{
union fregs_u tmpf = saved_state.asregs.fregs[0];
saved_state.asregs.fregs[0] = saved_state.asregs.fregs[1];
@@ -252,12 +281,14 @@ set_fpscr1 (x)
}
}
-#define GET_FPSCR() (saved_state.asregs.fpscr)
+/* sts relies on being able to read fpscr directly. */
+#define GET_FPSCR() (saved_state.asregs.sregs.named.fpscr)
#define SET_FPSCR(x) \
do { \
set_fpscr1 (x); \
} while (0)
+#define DSR (saved_state.asregs.sregs.named.fpscr)
int
fail ()
@@ -265,41 +296,80 @@ fail ()
abort ();
}
-int
-special_address (addr, bits_written, data)
- void *addr;
- int bits_written, data;
-{
- if ((unsigned) addr >> 24 == 0xf0 && bits_written == 32 && (data & 1) == 0)
- /* This invalidates (if not associative) or might invalidate
- (if associative) an instruction cache line. This is used for
- trampolines. Since we don't simulate the cache, this is a no-op
- as far as the simulator is concerned. */
- return 1;
- /* We can't do anything useful with the other stuff, so fail. */
- return 0;
-}
+#define RAISE_EXCEPTION(x) \
+ (saved_state.asregs.exception = x, saved_state.asregs.insn_end = 0)
-/* This function exists solely for the purpose of setting a breakpoint to
+/* This function exists mainly for the purpose of setting a breakpoint to
catch simulated bus errors when running the simulator under GDB. */
void
-bp_holder ()
+raise_exception (x)
+ int x;
+{
+ RAISE_EXCEPTION(x);
+}
+
+void
+raise_buserror ()
{
+ raise_exception (SIGBUS);
}
+#define PROCESS_SPECIAL_ADDRESS(addr, endian, ptr, bits_written, \
+ forbidden_addr_bits, data, retval) \
+do { \
+ if (addr & forbidden_addr_bits) \
+ { \
+ raise_buserror (); \
+ return retval; \
+ } \
+ else if ((addr & saved_state.asregs.xyram_select) \
+ == saved_state.asregs.xram_start) \
+ ptr = (void *) &saved_state.asregs.xmem_offset[addr ^ endian]; \
+ else if ((addr & saved_state.asregs.xyram_select) \
+ == saved_state.asregs.yram_start) \
+ ptr = (void *) &saved_state.asregs.ymem_offset[addr ^ endian]; \
+ else if ((unsigned) addr >> 24 == 0xf0 \
+ && bits_written == 32 && (data & 1) == 0) \
+ /* This invalidates (if not associative) or might invalidate \
+ (if associative) an instruction cache line. This is used for \
+ trampolines. Since we don't simulate the cache, this is a no-op \
+ as far as the simulator is concerned. */ \
+ return retval; \
+ else \
+ { \
+ if (bits_written == 8 && addr > 0x5000000) \
+ IOMEM (addr, 1, data); \
+ /* We can't do anything useful with the other stuff, so fail. */ \
+ raise_buserror (); \
+ return retval; \
+ } \
+} while (0)
+
/* FIXME: sim_resume should be renamed to sim_engine_run. sim_resume
being implemented by ../common/sim_resume.c and the below should
make a call to sim_engine_halt */
-#define BUSERROR(addr, mask, bits_written, data) \
- if (addr & ~mask) \
+#define BUSERROR(addr, mask) ((addr) & (mask))
+
+#define WRITE_BUSERROR(addr, mask, data, addr_func) \
+ do \
{ \
- if (special_address (addr, bits_written, data)) \
- return; \
- saved_state.asregs.exception = SIGBUS; \
- bp_holder (); \
- }
+ if (addr & mask) \
+ { \
+ addr_func (addr, data); \
+ return; \
+ } \
+ } \
+ while (0)
+
+#define READ_BUSERROR(addr, mask, addr_func) \
+ do \
+ { \
+ if (addr & mask) \
+ return addr_func (addr); \
+ } \
+ while (0)
/* Define this to enable register lifetime checking.
The compiler generates "add #0,rn" insns to mark registers as invalid,
@@ -321,8 +391,21 @@ int valid[16];
#endif
static void parse_and_set_memory_size PARAMS ((char *str));
-
static int IOMEM PARAMS ((int addr, int write, int value));
+static struct loop_bounds get_loop_bounds PARAMS((int, int, unsigned char *,
+ unsigned char *, int, int));
+static void process_wlat_addr PARAMS((int, int));
+static void process_wwat_addr PARAMS((int, int));
+static void process_wbat_addr PARAMS((int, int));
+static int process_rlat_addr PARAMS((int));
+static int process_rwat_addr PARAMS((int));
+static int process_rbat_addr PARAMS((int));
+static void INLINE wlat_fast PARAMS ((unsigned char *, int, int, int));
+static void INLINE wwat_fast PARAMS ((unsigned char *, int, int, int, int));
+static void INLINE wbat_fast PARAMS ((unsigned char *, int, int, int));
+static int INLINE rlat_fast PARAMS ((unsigned char *, int, int));
+static int INLINE rwat_fast PARAMS ((unsigned char *, int, int, int));
+static int INLINE rbat_fast PARAMS ((unsigned char *, int, int));
static host_callback *callback;
@@ -383,13 +466,37 @@ set_dr (n, exp)
#define XF(n) (saved_state.asregs.fregs[(n) >> 5].i[(n) & 0x1f])
#define SET_XF(n,EXP) (saved_state.asregs.fregs[(n) >> 5].i[(n) & 0x1f] = (EXP))
+#define RS saved_state.asregs.cregs.named.rs
+#define RE saved_state.asregs.cregs.named.re
+#define MOD (saved_state.asregs.cregs.named.mod)
+#define SET_MOD(i) \
+(MOD = (i), \
+ MOD_ME = (unsigned) MOD >> 16 | (SR_DMY ? ~0xffff : (SR_DMX ? 0 : 0x10000)), \
+ MOD_DELTA = (MOD & 0xffff) - ((unsigned) MOD >> 16))
+
+#define DSP_R(n) saved_state.asregs.sregs.i[(n)]
+#define DSP_GRD(n) DSP_R ((n) + 8)
+#define GET_DSP_GRD(n) ((n | 2) == 7 ? SEXT (DSP_GRD (n)) : SIGN32 (DSP_R (n)))
+#define A1 DSP_R (5)
+#define A0 DSP_R (7)
+#define X0 DSP_R (8)
+#define X1 DSP_R (9)
+#define Y0 DSP_R (10)
+#define Y1 DSP_R (11)
+#define M0 DSP_R (12)
+#define A1G DSP_R (13)
+#define M1 DSP_R (14)
+#define A0G DSP_R (15)
+/* DSP_R (16) / DSP_GRD (16) are used as a fake destination for pcmp. */
+#define MOD_ME DSP_GRD (17)
+#define MOD_DELTA DSP_GRD (18)
#define FP_OP(n, OP, m) \
{ \
if (FPSCR_PR) \
{ \
if (((n) & 1) || ((m) & 1)) \
- saved_state.asregs.exception = SIGILL; \
+ RAISE_EXCEPTION (SIGILL); \
else \
SET_DR(n, (DR(n) OP DR(m))); \
} \
@@ -402,7 +509,7 @@ set_dr (n, exp)
if (FPSCR_PR) \
{ \
if ((n) & 1) \
- saved_state.asregs.exception = SIGILL; \
+ RAISE_EXCEPTION (SIGILL); \
else \
SET_DR(n, (OP (DR(n)))); \
} \
@@ -415,7 +522,7 @@ set_dr (n, exp)
if (FPSCR_PR) \
{ \
if (((n) & 1) || ((m) & 1)) \
- saved_state.asregs.exception = SIGILL; \
+ RAISE_EXCEPTION (SIGILL); \
else \
SET_SR_T (DR(n) OP DR(m)); \
} \
@@ -423,180 +530,137 @@ set_dr (n, exp)
SET_SR_T (FR(n) OP FR(m)); \
} while (0)
-
-
-static void INLINE
-wlat_little (memory, x, value, maskl)
- unsigned char *memory;
-{
- int v = value;
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, 32, v);
- p[3] = v >> 24;
- p[2] = v >> 16;
- p[1] = v >> 8;
- p[0] = v;
-}
-
-static void INLINE
-wwat_little (memory, x, value, maskw)
- unsigned char *memory;
-{
- int v = value;
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, 16, v);
-
- p[1] = v >> 8;
- p[0] = v;
-}
-
-static void INLINE
-wbat_any (memory, x, value, maskb)
- unsigned char *memory;
+static void
+set_sr (new_sr)
+ int new_sr;
{
- unsigned char *p = memory + (x & maskb);
- if (x > 0x5000000)
- IOMEM (x, 1, value);
- BUSERROR(x, maskb, 8, value);
-
- p[0] = value;
+ /* do we need to swap banks */
+ int old_gpr = SR_MD && SR_RB;
+ int new_gpr = (new_sr & SR_MASK_MD) && (new_sr & SR_MASK_RB);
+ if (old_gpr != new_gpr)
+ {
+ int i, tmp;
+ for (i = 0; i < 8; i++)
+ {
+ tmp = saved_state.asregs.cregs.named.bank[i];
+ saved_state.asregs.cregs.named.bank[i] = saved_state.asregs.regs[i];
+ saved_state.asregs.regs[i] = tmp;
+ }
+ }
+ saved_state.asregs.cregs.named.sr = new_sr;
+ SET_MOD (MOD);
}
static void INLINE
-wlat_big (memory, x, value, maskl)
+wlat_fast (memory, x, value, maskl)
unsigned char *memory;
{
int v = value;
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, 32, v);
-
- p[0] = v >> 24;
- p[1] = v >> 16;
- p[2] = v >> 8;
- p[3] = v;
+ unsigned int *p = (unsigned int *)(memory + x);
+ WRITE_BUSERROR (x, maskl, v, process_wlat_addr);
+ *p = v;
}
static void INLINE
-wwat_big (memory, x, value, maskw)
+wwat_fast (memory, x, value, maskw, endianw)
unsigned char *memory;
{
int v = value;
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, 16, v);
-
- p[0] = v >> 8;
- p[1] = v;
+ unsigned short *p = (unsigned short *)(memory + (x ^ endianw));
+ WRITE_BUSERROR (x, maskw, v, process_wwat_addr);
+ *p = v;
}
static void INLINE
-wbat_big (memory, x, value, maskb)
+wbat_fast (memory, x, value, maskb)
unsigned char *memory;
{
- unsigned char *p = memory + (x & maskb);
- BUSERROR(x, maskb, 8, value);
+ unsigned char *p = memory + (x ^ endianb);
+ WRITE_BUSERROR (x, maskb, value, process_wbat_addr);
- if (x > 0x5000000)
- IOMEM (x, 1, value);
p[0] = value;
}
/* Read functions */
static int INLINE
-rlat_little (memory, x, maskl)
+rlat_fast (memory, x, maskl)
unsigned char *memory;
{
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, -32, -1);
+ unsigned int *p = (unsigned int *)(memory + x);
+ READ_BUSERROR (x, maskl, process_rlat_addr);
- return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
+ return *p;
}
static int INLINE
-rwat_little (memory, x, maskw)
+rwat_fast (memory, x, maskw, endianw)
unsigned char *memory;
+ int x, maskw, endianw;
{
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, -16, -1);
+ unsigned short *p = (unsigned short *)(memory + (x ^ endianw));
+ READ_BUSERROR (x, maskw, process_rwat_addr);
- return (p[1] << 8) | p[0];
+ return *p;
}
static int INLINE
-rbat_any (memory, x, maskb)
- unsigned char *memory;
-{
- unsigned char *p = memory + ((x) & maskb);
- BUSERROR(x, maskb, -8, -1);
-
- return p[0];
-}
-
-static int INLINE
-rlat_big (memory, x, maskl)
- unsigned char *memory;
+riat_fast (insn_ptr, endianw)
+ unsigned char *insn_ptr;
{
- unsigned char *p = memory + ((x) & maskl);
- BUSERROR(x, maskl, -32, -1);
+ unsigned short *p = (unsigned short *)((size_t) insn_ptr ^ endianw);
- return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
+ return *p;
}
static int INLINE
-rwat_big (memory, x, maskw)
+rbat_fast (memory, x, maskb)
unsigned char *memory;
{
- unsigned char *p = memory + ((x) & maskw);
- BUSERROR(x, maskw, -16, -1);
+ unsigned char *p = memory + (x ^ endianb);
+ READ_BUSERROR (x, maskb, process_rbat_addr);
- return (p[0] << 8) | p[1];
+ return *p;
}
-#define RWAT(x) (little_endian ? rwat_little(memory, x, maskw): rwat_big(memory, x, maskw))
-#define RLAT(x) (little_endian ? rlat_little(memory, x, maskl): rlat_big(memory, x, maskl))
-#define RBAT(x) (rbat_any (memory, x, maskb))
-#define WWAT(x,v) (little_endian ? wwat_little(memory, x, v, maskw): wwat_big(memory, x, v, maskw))
-#define WLAT(x,v) (little_endian ? wlat_little(memory, x, v, maskl): wlat_big(memory, x, v, maskl))
-#define WBAT(x,v) (wbat_any (memory, x, v, maskb))
+#define RWAT(x) (rwat_fast (memory, x, maskw, endianw))
+#define RLAT(x) (rlat_fast (memory, x, maskl))
+#define RBAT(x) (rbat_fast (memory, x, maskb))
+#define RIAT(p) (riat_fast ((p), endianw))
+#define WWAT(x,v) (wwat_fast (memory, x, v, maskw, endianw))
+#define WLAT(x,v) (wlat_fast (memory, x, v, maskl))
+#define WBAT(x,v) (wbat_fast (memory, x, v, maskb))
#define RUWAT(x) (RWAT(x) & 0xffff)
#define RSWAT(x) ((short)(RWAT(x)))
#define RSBAT(x) (SEXT(RBAT(x)))
-#define RDAT(x, n) (do_rdat (memory, (x), (n), (little_endian)))
+#define RDAT(x, n) (do_rdat (memory, (x), (n), (maskl)))
static int
-do_rdat (memory, x, n, little_endian)
+do_rdat (memory, x, n, maskl)
char *memory;
int x;
int n;
- int little_endian;
+ int maskl;
{
int f0;
int f1;
int i = (n & 1);
int j = (n & ~1);
- if (little_endian)
- {
- f0 = rlat_little (memory, x + 0, maskl);
- f1 = rlat_little (memory, x + 4, maskl);
- }
- else
- {
- f0 = rlat_big (memory, x + 0, maskl);
- f1 = rlat_big (memory, x + 4, maskl);
- }
+ f0 = rlat_fast (memory, x + 0, maskl);
+ f1 = rlat_fast (memory, x + 4, maskl);
saved_state.asregs.fregs[i].i[(j + 0)] = f0;
saved_state.asregs.fregs[i].i[(j + 1)] = f1;
return 0;
}
-#define WDAT(x, n) (do_wdat (memory, (x), (n), (little_endian)))
+#define WDAT(x, n) (do_wdat (memory, (x), (n), (maskl)))
static int
-do_wdat (memory, x, n, little_endian)
+do_wdat (memory, x, n, maskl)
char *memory;
int x;
int n;
- int little_endian;
+ int maskl;
{
int f0;
int f1;
@@ -604,34 +668,123 @@ do_wdat (memory, x, n, little_endian)
int j = (n & ~1);
f0 = saved_state.asregs.fregs[i].i[(j + 0)];
f1 = saved_state.asregs.fregs[i].i[(j + 1)];
- if (little_endian)
- {
- wlat_little (memory, (x + 0), f0, maskl);
- wlat_little (memory, (x + 4), f1, maskl);
- }
- else
- {
- wlat_big (memory, (x + 0), f0, maskl);
- wlat_big (memory, (x + 4), f1, maskl);
- }
+ wlat_fast (memory, (x + 0), f0, maskl);
+ wlat_fast (memory, (x + 4), f1, maskl);
return 0;
}
+static void
+process_wlat_addr (addr, value)
+ int addr;
+ int value;
+{
+ unsigned int *ptr;
+
+ PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, 32, 3, value, );
+ *ptr = value;
+}
+
+static void
+process_wwat_addr (addr, value)
+ int addr;
+ int value;
+{
+ unsigned short *ptr;
+
+ PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, 16, 1, value, );
+ *ptr = value;
+}
+
+static void
+process_wbat_addr (addr, value)
+ int addr;
+ int value;
+{
+ unsigned char *ptr;
+
+ PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, 8, 0, value, );
+ *ptr = value;
+}
-#define MA(n) do { memstalls += (((pc & 3) != 0) ? (n) : ((n) - 1)); } while (0)
+static int
+process_rlat_addr (addr)
+ int addr;
+{
+ unsigned char *ptr;
+
+ PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, -32, 3, -1, 0);
+ return *ptr;
+}
+
+static int
+process_rwat_addr (addr)
+ int addr;
+{
+ unsigned char *ptr;
+
+ PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, -16, 1, -1, 0);
+ return *ptr;
+}
+
+static int
+process_rbat_addr (addr)
+ int addr;
+{
+ unsigned char *ptr;
+
+ PROCESS_SPECIAL_ADDRESS (addr, endianb, ptr, -8, 0, -1, 0);
+ return *ptr;
+}
#define SEXT(x) (((x & 0xff) ^ (~0x7f))+0x80)
#define SEXT12(x) (((x & 0xfff) ^ 0x800) - 0x800)
#define SEXTW(y) ((int)((short)y))
+#if 0
+#define SEXT32(x) ((int)((x & 0xffffffff) ^ 0x80000000U) - 0x7fffffff - 1)
+#else
+#define SEXT32(x) ((int)(x))
+#endif
+#define SIGN32(x) (SEXT32 (x) >> 31)
+
+/* convert pointer from target to host value. */
+#define PT2H(x) ((x) + memory)
+/* convert pointer from host to target value. */
+#define PH2T(x) ((x) - memory)
+
+#define SKIP_INSN(p) ((p) += ((RIAT (p) & 0xfc00) == 0xf800 ? 4 : 2))
-#define Delay_Slot(TEMPPC) iword = RUWAT(TEMPPC); goto top;
+#define SET_NIP(x) nip = (x); CHECK_INSN_PTR (nip);
-int empty[16];
+#define Delay_Slot(TEMPPC) iword = RIAT (TEMPPC); goto top;
+
+#define CHECK_INSN_PTR(p) \
+do { \
+ if (saved_state.asregs.exception || PH2T (p) & maskw) \
+ saved_state.asregs.insn_end = 0; \
+ else if (p < loop.end) \
+ saved_state.asregs.insn_end = loop.end; \
+ else \
+ saved_state.asregs.insn_end = mem_end; \
+} while (0)
+
+#ifdef ACE_FAST
+
+#define MA(n)
+#define L(x)
+#define TL(x)
+#define TB(x)
+
+#else
+
+#define MA(n) \
+ do { memstalls += ((((int) PC & 3) != 0) ? (n) : ((n) - 1)); } while (0)
#define L(x) thislock = x;
#define TL(x) if ((x) == prevlock) stalls++;
#define TB(x,y) if ((x) == prevlock || (y)==prevlock) stalls++;
+#endif
+
#if defined(__GO32__) || defined(_WIN32)
int sim_memory_size = 19;
#else
@@ -698,22 +851,23 @@ now_persec ()
static FILE *profile_file;
-static void
-swap (memory, n)
- unsigned char *memory;
- int n;
+static unsigned INLINE
+swap (n)
+ unsigned n;
{
- int little_endian = target_little_endian;
- WLAT (0, n);
+ if (endianb)
+ n = (n << 24 | (n & 0xff00) << 8
+ | (n & 0xff0000) >> 8 | (n & 0xff000000) >> 24);
+ return n;
}
-static void
-swap16 (memory, n)
- unsigned char *memory;
- int n;
+static unsigned short INLINE
+swap16 (n)
+ unsigned short n;
{
- int little_endian = target_little_endian;
- WWAT (0, n);
+ if (endianb)
+ n = n << 8 | (n & 0xff00) >> 8;
+ return n;
}
static void
@@ -722,9 +876,9 @@ swapout (n)
{
if (profile_file)
{
- char b[4];
- swap (b, n);
- fwrite (b, 4, 1, profile_file);
+ union { char b[4]; int n; } u;
+ u.n = swap (n);
+ fwrite (u.b, 4, 1, profile_file);
}
}
@@ -732,9 +886,9 @@ static void
swapout16 (n)
int n;
{
- char b[4];
- swap16 (b, n);
- fwrite (b, 2, 1, profile_file);
+ union { char b[4]; int n; } u;
+ u.n = swap16 (n);
+ fwrite (u.b, 2, 1, profile_file);
}
/* Turn a pointer in a register into a pointer into real memory. */
@@ -746,10 +900,46 @@ ptr (x)
return (char *) (x + saved_state.asregs.memory);
}
+static int
+strswaplen (str)
+ int str;
+{
+ unsigned char *memory = saved_state.asregs.memory;
+ int start, end;
+ int endian = endianb;
+
+ if (! endian)
+ return 0;
+ end = str;
+ for (end = str; memory[end ^ endian]; end++) ;
+ return end - str;
+}
+
+static void
+strnswap (str, len)
+ int str;
+ int len;
+{
+ int *start, *end;
+
+ if (! endianb || ! len)
+ return;
+ start = (int *) ptr (str & ~3);
+ end = (int *) ptr (str + len);
+ do
+ {
+ int old = *start;
+ *start = (old << 24 | (old & 0xff00) << 8
+ | (old & 0xff0000) >> 8 | (old & 0xff000000) >> 24);
+ start++;
+ }
+ while (start < end);
+}
+
/* Simulate a monitor trap, put the result into r0 and errno into r1 */
static void
-trap (i, regs, memory, maskl, maskw, little_endian)
+trap (i, regs, memory, maskl, maskw, endianw)
int i;
int *regs;
unsigned char *memory;
@@ -760,7 +950,7 @@ trap (i, regs, memory, maskl, maskw, little_endian)
printf ("%c", regs[0]);
break;
case 2:
- saved_state.asregs.exception = SIGQUIT;
+ raise_exception (SIGQUIT);
break;
case 3: /* FIXME: for backwards compat, should be removed */
case 34:
@@ -776,40 +966,42 @@ trap (i, regs, memory, maskl, maskw, little_endian)
case SYS_fork:
regs[0] = fork ();
break;
+/* This would work only if endianness matched between host and target.
+ Besides, it's quite dangerous. */
+#if 0
case SYS_execve:
regs[0] = execve (ptr (regs[5]), (char **)ptr (regs[6]), (char **)ptr (regs[7]));
break;
case SYS_execv:
regs[0] = execve (ptr (regs[5]),(char **) ptr (regs[6]), 0);
break;
+#endif
case SYS_pipe:
{
- char *buf;
- int host_fd[2];
-
- buf = ptr (regs[5]);
-
- regs[0] = pipe (host_fd);
-
- WLAT (buf, host_fd[0]);
- buf += 4;
- WLAT (buf, host_fd[1]);
+ regs[0] = (BUSERROR (regs[5], maskl)
+ ? -EINVAL
+ : pipe ((int *) ptr (regs[5])));
}
break;
case SYS_wait:
regs[0] = wait (ptr (regs[5]));
break;
-#endif
+#endif /* !defined(__GO32__) && !defined(_WIN32) */
case SYS_read:
- regs[0] = callback->read (callback, regs[5], ptr (regs[6]), regs[7]);
+ strnswap (regs[6], regs[7]);
+ regs[0]
+ = callback->read (callback, regs[5], ptr (regs[6]), regs[7]);
+ strnswap (regs[6], regs[7]);
break;
case SYS_write:
+ strnswap (regs[6], regs[7]);
if (regs[5] == 1)
regs[0] = (int)callback->write_stdout (callback, ptr(regs[6]), regs[7]);
else
regs[0] = (int)callback->write (callback, regs[5], ptr (regs[6]), regs[7]);
+ strnswap (regs[6], regs[7]);
break;
case SYS_lseek:
regs[0] = callback->lseek (callback,regs[5], regs[6], regs[7]);
@@ -818,11 +1010,16 @@ trap (i, regs, memory, maskl, maskw, little_endian)
regs[0] = callback->close (callback,regs[5]);
break;
case SYS_open:
- regs[0] = callback->open (callback,ptr (regs[5]), regs[6]);
- break;
+ {
+ int len = strswaplen (regs[5]);
+ strnswap (regs[5], len);
+ regs[0] = callback->open (callback,ptr (regs[5]), regs[6]);
+ strnswap (regs[5], len);
+ break;
+ }
case SYS_exit:
/* EXIT - caller can look in r5 to work out the reason */
- saved_state.asregs.exception = SIGQUIT;
+ raise_exception (SIGQUIT);
regs[0] = regs[5];
break;
@@ -830,11 +1027,14 @@ trap (i, regs, memory, maskl, maskw, little_endian)
/* stat system call */
{
struct stat host_stat;
- char *buf;
+ int buf;
+ int len = strswaplen (regs[5]);
+ strnswap (regs[5], len);
regs[0] = stat (ptr (regs[5]), &host_stat);
+ strnswap (regs[5], len);
- buf = ptr (regs[6]);
+ buf = regs[6];
WWAT (buf, host_stat.st_dev);
buf += 2;
@@ -873,17 +1073,35 @@ trap (i, regs, memory, maskl, maskw, little_endian)
#ifndef _WIN32
case SYS_chown:
- regs[0] = chown (ptr (regs[5]), regs[6], regs[7]);
- break;
+ {
+ int len = strswaplen (regs[5]);
+
+ strnswap (regs[5], len);
+ regs[0] = chown (ptr (regs[5]), regs[6], regs[7]);
+ strnswap (regs[5], len);
+ break;
+ }
#endif /* _WIN32 */
case SYS_chmod:
- regs[0] = chmod (ptr (regs[5]), regs[6]);
- break;
+ {
+ int len = strswaplen (regs[5]);
+
+ strnswap (regs[5], len);
+ regs[0] = chmod (ptr (regs[5]), regs[6]);
+ strnswap (regs[5], len);
+ break;
+ }
case SYS_utime:
- /* Cast the second argument to void *, to avoid type mismatch
- if a prototype is present. */
- regs[0] = utime (ptr (regs[5]), (void *) ptr (regs[6]));
- break;
+ {
+ /* Cast the second argument to void *, to avoid type mismatch
+ if a prototype is present. */
+ int len = strswaplen (regs[5]);
+
+ strnswap (regs[5], len);
+ regs[0] = utime (ptr (regs[5]), (void *) ptr (regs[6]));
+ strnswap (regs[5], len);
+ break;
+ }
default:
abort ();
}
@@ -894,7 +1112,7 @@ trap (i, regs, memory, maskl, maskw, little_endian)
case 0xc3:
case 255:
- saved_state.asregs.exception = SIGTRAP;
+ raise_exception (SIGTRAP);
break;
}
@@ -907,7 +1125,7 @@ control_c (sig, code, scp, addr)
char *scp;
char *addr;
{
- saved_state.asregs.exception = SIGINT;
+ raise_exception (SIGINT);
}
static int
@@ -1041,12 +1259,12 @@ dmul (sign, rm, rn)
}
static void
-macw (regs, memory, n, m)
+macw (regs, memory, n, m, endianw)
int *regs;
unsigned char *memory;
int m, n;
+ int endianw;
{
- int little_endian = target_little_endian;
long tempm, tempn;
long prod, macl, sum;
@@ -1078,6 +1296,50 @@ macw (regs, memory, n, m)
MACL = sum;
}
+static struct loop_bounds
+get_loop_bounds (rs, re, memory, mem_end, maskw, endianw)
+ int rs, re;
+ unsigned char *memory, *mem_end;
+ int maskw, endianw;
+{
+ struct loop_bounds loop;
+
+ if (SR_RC)
+ {
+ if (RS >= RE)
+ {
+ loop.start = PT2H (RE - 4);
+ SKIP_INSN (loop.start);
+ loop.end = loop.start;
+ if (RS - RE == 0)
+ SKIP_INSN (loop.end);
+ if (RS - RE <= 2)
+ SKIP_INSN (loop.end);
+ SKIP_INSN (loop.end);
+ }
+ else
+ {
+ loop.start = PT2H (RS);
+ loop.end = PT2H (RE - 4);
+ SKIP_INSN (loop.end);
+ SKIP_INSN (loop.end);
+ SKIP_INSN (loop.end);
+ SKIP_INSN (loop.end);
+ }
+ if (loop.end >= mem_end)
+ loop.end = PT2H (0);
+ }
+ else
+ loop.end = PT2H (0);
+
+ return loop;
+}
+
+static void
+ppi_insn();
+
+#include "ppi.c"
+
/* Set the memory size to the power of two provided. */
void
@@ -1109,6 +1371,92 @@ sim_size (power)
}
static void
+init_dsp (abfd)
+ struct _bfd *abfd;
+{
+ int was_dsp = target_dsp;
+ unsigned long mach = bfd_get_mach (abfd);
+
+ if (mach == bfd_mach_sh_dsp || mach == bfd_mach_sh3_dsp)
+ {
+ int ram_area_size, xram_start, yram_start;
+ int new_select;
+
+ target_dsp = 1;
+ if (mach == bfd_mach_sh_dsp)
+ {
+ /* SH7410 (orig. sh-sdp):
+ 4KB each for X & Y memory;
+ On-chip X RAM 0x0800f000-0x0800ffff
+ On-chip Y RAM 0x0801f000-0x0801ffff */
+ xram_start = 0x0800f000;
+ ram_area_size = 0x1000;
+ }
+ if (mach == bfd_mach_sh3_dsp)
+ {
+ /* SH7612:
+ 8KB each for X & Y memory;
+ On-chip X RAM 0x1000e000-0x1000ffff
+ On-chip Y RAM 0x1001e000-0x1001ffff */
+ xram_start = 0x1000e000;
+ ram_area_size = 0x2000;
+ }
+ yram_start = xram_start + 0x10000;
+ new_select = ~(ram_area_size - 1);
+ if (saved_state.asregs.xyram_select != new_select)
+ {
+ saved_state.asregs.xyram_select = new_select;
+ free (saved_state.asregs.xmem);
+ free (saved_state.asregs.ymem);
+ saved_state.asregs.xmem = (unsigned char *) calloc (1, ram_area_size);
+ saved_state.asregs.ymem = (unsigned char *) calloc (1, ram_area_size);
+
+ /* Disable use of X / Y mmeory if not allocated. */
+ if (! saved_state.asregs.xmem || ! saved_state.asregs.ymem)
+ {
+ saved_state.asregs.xyram_select = 0;
+ if (saved_state.asregs.xmem)
+ free (saved_state.asregs.xmem);
+ if (saved_state.asregs.ymem)
+ free (saved_state.asregs.ymem);
+ }
+ }
+ saved_state.asregs.xram_start = xram_start;
+ saved_state.asregs.yram_start = yram_start;
+ saved_state.asregs.xmem_offset = saved_state.asregs.xmem - xram_start;
+ saved_state.asregs.ymem_offset = saved_state.asregs.ymem - yram_start;
+ }
+ else
+ {
+ target_dsp = 0;
+ if (saved_state.asregs.xyram_select)
+ {
+ saved_state.asregs.xyram_select = 0;
+ free (saved_state.asregs.xmem);
+ free (saved_state.asregs.ymem);
+ }
+ }
+
+ if (! saved_state.asregs.xyram_select)
+ {
+ saved_state.asregs.xram_start = 1;
+ saved_state.asregs.yram_start = 1;
+ }
+
+ if (target_dsp != was_dsp)
+ {
+ int i, tmp;
+
+ for (i = sizeof sh_dsp_table - 1; i >= 0; i--)
+ {
+ tmp = sh_jump_table[0xf000 + i];
+ sh_jump_table[0xf000 + i] = sh_dsp_table[i];
+ sh_dsp_table[i] = tmp;
+ }
+ }
+}
+
+static void
init_pointers ()
{
host_little_endian = 0;
@@ -1177,7 +1525,7 @@ int
sim_stop (sd)
SIM_DESC sd;
{
- saved_state.asregs.exception = SIGINT;
+ raise_exception (SIGINT);
return 1;
}
@@ -1186,7 +1534,9 @@ sim_resume (sd, step, siggnal)
SIM_DESC sd;
int step, siggnal;
{
- register unsigned int pc;
+ register unsigned char *insn_ptr;
+ unsigned char *mem_end;
+ struct loop_bounds loop;
register int cycles = 0;
register int stalls = 0;
register int memstalls = 0;
@@ -1195,22 +1545,25 @@ sim_resume (sd, step, siggnal)
register int thislock;
register unsigned int doprofile;
register int pollcount = 0;
- register int little_endian = target_little_endian;
+ /* endianw is used for every insn fetch, hence it makes sense to cache it.
+ endianb is used less often. */
+ register int endianw = global_endianw;
int tick_start = get_now ();
void (*prev) ();
void (*prev_fpe) ();
- extern unsigned char sh_jump_table0[];
- register unsigned char *jump_table = sh_jump_table0;
+ register unsigned char *jump_table = sh_jump_table;
register int *R = &(saved_state.asregs.regs[0]);
/*register int T;*/
+#ifndef PR
register int PR;
+#endif
- register int maskb = ((saved_state.asregs.msize - 1) & ~0);
- register int maskw = ((saved_state.asregs.msize - 1) & ~1);
- register int maskl = ((saved_state.asregs.msize - 1) & ~3);
+ register int maskb = ~((saved_state.asregs.msize - 1) & ~0);
+ register int maskw = ~((saved_state.asregs.msize - 1) & ~1);
+ register int maskl = ~((saved_state.asregs.msize - 1) & ~3);
register unsigned char *memory;
register unsigned int sbit = ((unsigned int) 1 << 31);
@@ -1218,20 +1571,18 @@ sim_resume (sd, step, siggnal)
prev_fpe = signal (SIGFPE, SIG_IGN);
init_pointers ();
+ saved_state.asregs.exception = 0;
memory = saved_state.asregs.memory;
+ mem_end = memory + saved_state.asregs.msize;
- if (step)
- {
- saved_state.asregs.exception = SIGTRAP;
- }
- else
- {
- saved_state.asregs.exception = 0;
- }
+ loop = get_loop_bounds (RS, RE, memory, mem_end, maskw, endianw);
+ insn_ptr = PT2H (saved_state.asregs.pc);
+ CHECK_INSN_PTR (insn_ptr);
- pc = saved_state.asregs.pc;
- PR = saved_state.asregs.pr;
+#ifndef PR
+ PR = saved_state.asregs.sregs.named.pr;
+#endif
/*T = GET_SR () & SR_MASK_T;*/
prevlock = saved_state.asregs.prevlock;
thislock = saved_state.asregs.thislock;
@@ -1242,11 +1593,26 @@ sim_resume (sd, step, siggnal)
if (doprofile == 0)
doprofile = ~0;
- do
+ loop:
+ if (step && insn_ptr < saved_state.asregs.insn_end)
+ {
+ if (saved_state.asregs.exception)
+ /* This can happen if we've already been single-stepping and
+ encountered a loop end. */
+ saved_state.asregs.insn_end = insn_ptr;
+ else
+ {
+ saved_state.asregs.exception = SIGTRAP;
+ saved_state.asregs.insn_end = insn_ptr + 2;
+ }
+ }
+
+ while (insn_ptr < saved_state.asregs.insn_end)
{
- register unsigned int iword = RUWAT (pc);
+ register unsigned int iword = RIAT (insn_ptr);
register unsigned int ult;
- register unsigned int nia = pc + 2;
+ register unsigned char *nip = insn_ptr + 2;
+
#ifndef ACE_FAST
insts++;
#endif
@@ -1255,7 +1621,7 @@ sim_resume (sd, step, siggnal)
#include "code.c"
- pc = nia;
+ insn_ptr = nip;
if (--pollcount < 0)
{
@@ -1279,7 +1645,7 @@ sim_resume (sd, step, siggnal)
cycles -= doprofile;
if (saved_state.asregs.profile_hist)
{
- int n = pc >> PROFILE_SHIFT;
+ int n = PH2T (insn_ptr) >> PROFILE_SHIFT;
if (n < nsamples)
{
int i = saved_state.asregs.profile_hist[n];
@@ -1291,23 +1657,37 @@ sim_resume (sd, step, siggnal)
}
#endif
}
- while (!saved_state.asregs.exception);
+ if (saved_state.asregs.insn_end == loop.end)
+ {
+ saved_state.asregs.cregs.named.sr += SR_RC_INCREMENT;
+ if (SR_RC)
+ insn_ptr = loop.start;
+ else
+ {
+ saved_state.asregs.insn_end = mem_end;
+ loop.end = PT2H (0);
+ }
+ goto loop;
+ }
if (saved_state.asregs.exception == SIGILL
|| saved_state.asregs.exception == SIGBUS)
{
- pc -= 2;
+ insn_ptr -= 2;
}
+ /* Check for SIGBUS due to insn fetch. */
+ else if (! saved_state.asregs.exception)
+ saved_state.asregs.exception == SIGBUS;
saved_state.asregs.ticks += get_now () - tick_start;
saved_state.asregs.cycles += cycles;
saved_state.asregs.stalls += stalls;
saved_state.asregs.memstalls += memstalls;
saved_state.asregs.insts += insts;
- saved_state.asregs.pc = pc;
- /* restore the T and other cached SR bits */
- SET_SR (GET_SR());
- saved_state.asregs.pr = PR;
+ saved_state.asregs.pc = PH2T (insn_ptr);
+#ifndef PR
+ saved_state.asregs.sregs.named.pr = PR;
+#endif
saved_state.asregs.prevlock = prevlock;
saved_state.asregs.thislock = thislock;
@@ -1334,7 +1714,7 @@ sim_write (sd, addr, buffer, size)
for (i = 0; i < size; i++)
{
- saved_state.asregs.memory[MMASKB & (addr + i)] = buffer[i];
+ saved_state.asregs.memory[(MMASKB & (addr + i)) ^ endianb] = buffer[i];
}
return size;
}
@@ -1352,13 +1732,11 @@ sim_read (sd, addr, buffer, size)
for (i = 0; i < size; i++)
{
- buffer[i] = saved_state.asregs.memory[MMASKB & (addr + i)];
+ buffer[i] = saved_state.asregs.memory[(MMASKB & (addr + i)) ^ endianb];
}
return size;
}
-/* We have to add one to RN as an index into asints because of the padding
- added at the start of asregs. */
int
sim_store_register (sd, rn, memory, length)
SIM_DESC sd;
@@ -1366,14 +1744,108 @@ sim_store_register (sd, rn, memory, length)
unsigned char *memory;
int length;
{
- int little_endian;
+ unsigned val;
+
init_pointers ();
- little_endian = target_little_endian;
- if (&saved_state.asints[rn+1]
- == &saved_state.asregs.fpscr)
- set_fpscr1 (RLAT(0));
- else
- saved_state.asints[rn+1] = RLAT(0);
+ val = swap (* (int *)memory);
+ switch (rn)
+ {
+ case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
+ case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
+ saved_state.asregs.regs[rn] = val;
+ break;
+ case 16:
+ saved_state.asregs.pc = val;
+ break;
+ case 17:
+ PR = val;
+ break;
+ case 18:
+ GBR = val;
+ break;
+ case 19:
+ VBR = val;
+ break;
+ case 20:
+ MACH = val;
+ break;
+ case 21:
+ MACL = val;
+ break;
+ case 22:
+ SET_SR (val);
+ break;
+ case 23:
+ FPUL = val;
+ break;
+ case 24:
+ SET_FPSCR (val);
+ break;
+ case 25:
+ if (target_dsp)
+ A0G = val;
+ else case 26:
+ if (target_dsp)
+ A0 = val;
+ else case 27:
+ if (target_dsp)
+ A1G = val;
+ else case 28:
+ if (target_dsp)
+ A1 = val;
+ else case 29:
+ if (target_dsp)
+ M0 = val;
+ else case 30:
+ if (target_dsp)
+ M1 = val;
+ else case 31:
+ if (target_dsp)
+ X0 = val;
+ else case 32:
+ if (target_dsp)
+ X1 = val;
+ else case 33:
+ if (target_dsp)
+ Y0 = val;
+ else case 34:
+ if (target_dsp)
+ Y1 = val;
+ else case 40:
+ if (target_dsp)
+ SET_MOD (val);
+ else case 35: case 36: case 37: case 38: case 39:
+ SET_FI (rn - 25, val);
+ break;
+ case 41:
+ SSR = val;
+ break;
+ case 42:
+ SPC = val;
+ break;
+ /* The rn_bank idiosyncracies are not due to hardware differences, but to
+ a weird aliasing naming scheme for sh3 / sh3e / sh4. */
+ case 43:
+ if (target_dsp)
+ RS = val;
+ else case 44:
+ if (target_dsp)
+ RE = val;
+ else case 45: case 46: case 47: case 48: case 49: case 50:
+ if (SR_MD && SR_RB)
+ Rn_BANK (rn - 43) = val;
+ else
+ saved_state.asregs.regs[rn - 43] = val;
+ break;
+ case 51: case 52: case 53: case 54: case 55: case 56: case 57: case 58:
+ if (target_dsp || ! SR_MD || ! SR_RB)
+ SET_Rn_BANK (rn - 51, val);
+ else
+ saved_state.asregs.regs[rn - 51] = val;
+ break;
+ default:
+ return 0;
+ }
return -1;
}
@@ -1384,10 +1856,106 @@ sim_fetch_register (sd, rn, memory, length)
unsigned char *memory;
int length;
{
- int little_endian;
+ int val;
+
init_pointers ();
- little_endian = target_little_endian;
- WLAT (0, saved_state.asints[rn+1]);
+ switch (rn)
+ {
+ case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
+ case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
+ val = saved_state.asregs.regs[rn];
+ break;
+ case 16:
+ val = saved_state.asregs.pc;
+ break;
+ case 17:
+ val = PR;
+ break;
+ case 18:
+ val = GBR;
+ break;
+ case 19:
+ val = VBR;
+ break;
+ case 20:
+ val = MACH;
+ break;
+ case 21:
+ val = MACL;
+ break;
+ case 22:
+ val = GET_SR ();
+ break;
+ case 23:
+ val = FPUL;
+ break;
+ case 24:
+ val = GET_FPSCR ();
+ break;
+ case 25:
+ val = target_dsp ? SEXT (A0G) : FI (0);
+ break;
+ case 26:
+ val = target_dsp ? A0 : FI (1);
+ break;
+ case 27:
+ val = target_dsp ? SEXT (A1G) : FI (2);
+ break;
+ case 28:
+ val = target_dsp ? A1 : FI (3);
+ break;
+ case 29:
+ val = target_dsp ? M0 : FI (4);
+ break;
+ case 30:
+ val = target_dsp ? M1 : FI (5);
+ break;
+ case 31:
+ val = target_dsp ? X0 : FI (6);
+ break;
+ case 32:
+ val = target_dsp ? X1 : FI (7);
+ break;
+ case 33:
+ val = target_dsp ? Y0 : FI (8);
+ break;
+ case 34:
+ val = target_dsp ? Y1 : FI (9);
+ break;
+ case 35: case 36: case 37: case 38: case 39:
+ val = FI (rn - 25);
+ break;
+ case 40:
+ val = target_dsp ? MOD : FI (15);
+ break;
+ case 41:
+ val = SSR;
+ break;
+ case 42:
+ val = SPC;
+ break;
+ /* The rn_bank idiosyncracies are not due to hardware differences, but to
+ a weird aliasing naming scheme for sh3 / sh3e / sh4. */
+ case 43:
+ if (target_dsp)
+ val = RS;
+ else case 44:
+ if (target_dsp)
+ val = RE;
+ else case 45: case 46: case 47: case 48: case 49: case 50:
+ val = (SR_MD && SR_RB
+ ? Rn_BANK (rn - 43)
+ : saved_state.asregs.regs[rn - 43]);
+ break;
+ case 51: case 52: case 53: case 54: case 55: case 56: case 57: case 58:
+ val = (target_dsp || ! SR_MD || ! SR_RB
+ ? Rn_BANK (rn - 51)
+ : saved_state.asregs.regs[rn - 51]);
+ break;
+ default:
+ return 0;
+ }
+ * (int *) memory = swap (val);
return -1;
}
@@ -1477,6 +2045,14 @@ sim_open (kind, cb, abfd, argv)
{
char **p;
int endian_set = 0;
+ int i;
+ union
+ {
+ int i;
+ short s[2];
+ char c[4];
+ }
+ mem_word;
sim_kind = kind;
myname = argv[0];
@@ -1504,6 +2080,17 @@ sim_open (kind, cb, abfd, argv)
if (abfd != NULL && ! endian_set)
target_little_endian = ! bfd_big_endian (abfd);
+ if (abfd)
+ init_dsp (abfd);
+
+ for (i = 4; (i -= 2) >= 0; )
+ mem_word.s[i >> 1] = i;
+ global_endianw = mem_word.i >> (target_little_endian ? 0 : 16) & 0xffff;
+
+ for (i = 4; --i >= 0; )
+ mem_word.c[i] = i;
+ endianb = mem_word.i >> (target_little_endian ? 0 : 24) & 0xff;
+
/* fudge our descriptor for now */
return (SIM_DESC) 1;
}
generated by cgit v1.1 at 2024-12-27 09:56:21 +0000