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-rw-r--r--sim/erc32/ChangeLog22
-rw-r--r--sim/erc32/erc32.c175
-rw-r--r--sim/erc32/exec.c58
-rw-r--r--sim/erc32/func.c69
-rw-r--r--sim/erc32/interf.c39
-rw-r--r--sim/erc32/sis.c4
-rw-r--r--sim/erc32/sis.h2
7 files changed, 159 insertions, 210 deletions
diff --git a/sim/erc32/ChangeLog b/sim/erc32/ChangeLog
index 57c1932..109a13b 100644
--- a/sim/erc32/ChangeLog
+++ b/sim/erc32/ChangeLog
@@ -1,3 +1,25 @@
+2015-04-19 Jiri Gaisler <jiri@gaisler.se>
+
+ * erc32.c (current_target_byte_order): Delete.
+ (fetch_bytes): Remove.
+ (store_bytes): Remove byte twisting.
+ (memory_read, memory_write): Access memory directly.
+ (extract_short, extract_short_signed, extract_byte,
+ extract_byte_signed): New function for for sub-word LD instructions.
+ * exec.c (extract_short, extract_short_signed, extract_byte,
+ extract_byte_signed): New functions.
+ (dispatch_instruction): Update memory reads.
+ * func.c (current_target_byte_order): Delete.
+ (get_regi): Delete little endian handling.
+ (disp_ctrl, dis_mem): Adjust print-out to new data endian.
+ (bfd_load): Delete little endian handling.
+ * interf.c (current_target_byte_order): Delete.
+ (sim_open): Set dinfo to host endian to get correct disassembly.
+ (sim_write, sim_read): Convert endian when gdb reads or writes
+ memory.
+ * sis.c (main): Set endian.
+ * sis.h (EBT): Define.
+
2015-04-13 Mike Frysinger <vapier@gentoo.org>
* configure: Regenerate.
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index 7f24fb0..4d4ad04 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -54,11 +54,6 @@ int dumbio = 0; /* normal, smart, terminal oriented IO by default */
extern int errmec;
#endif
-/* The target's byte order is big-endian by default until we load a
- little-endian program. */
-
-int current_target_byte_order = BIG_ENDIAN;
-
#define MEC_WS 0 /* Waitstates per MEC access (0 ws) */
#define MOK 0
@@ -296,11 +291,8 @@ static void gpt_reload_set (uint32 val);
static void timer_ctrl (uint32 val);
static unsigned char *
get_mem_ptr (uint32 addr, uint32 size);
-
-static void fetch_bytes (int asi, unsigned char *mem,
- uint32 *data, int sz);
-
-static void store_bytes (unsigned char *mem, uint32 *data, int sz);
+static void store_bytes (unsigned char *mem, uint32 waddr,
+ uint32 *data, int sz, int32 *ws);
extern int ext_irl;
@@ -1524,123 +1516,38 @@ timer_ctrl(val)
gpt_start();
}
-
-/* Retrieve data from target memory. MEM points to location from which
- to read the data; DATA points to words where retrieved data will be
- stored in host byte order. SZ contains log(2) of the number of bytes
- to retrieve, and can be 0 (1 byte), 1 (one half-word), 2 (one word),
- or 3 (two words). */
+/* Store data in host byte order. MEM points to the beginning of the
+ emulated memory; WADDR contains the index the emulated memory,
+ DATA points to words in host byte order to be stored. SZ contains log(2)
+ of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
+ 2 (one word), or 3 (two words); WS should return the number of
+ wait-states. */
static void
-fetch_bytes (asi, mem, data, sz)
- int asi;
- unsigned char *mem;
- uint32 *data;
- int sz;
+store_bytes (unsigned char *mem, uint32 waddr, uint32 *data, int32 sz,
+ int32 *ws)
{
- if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN
- || asi == 8 || asi == 9) {
- switch (sz) {
- case 3:
- data[1] = (((uint32) mem[7]) & 0xff) |
- ((((uint32) mem[6]) & 0xff) << 8) |
- ((((uint32) mem[5]) & 0xff) << 16) |
- ((((uint32) mem[4]) & 0xff) << 24);
- /* Fall through to 2 */
- case 2:
- data[0] = (((uint32) mem[3]) & 0xff) |
- ((((uint32) mem[2]) & 0xff) << 8) |
- ((((uint32) mem[1]) & 0xff) << 16) |
- ((((uint32) mem[0]) & 0xff) << 24);
- break;
- case 1:
- data[0] = (((uint32) mem[1]) & 0xff) |
- ((((uint32) mem[0]) & 0xff) << 8);
- break;
+ switch (sz) {
case 0:
- data[0] = mem[0] & 0xff;
- break;
-
- }
- } else {
- switch (sz) {
- case 3:
- data[1] = ((((uint32) mem[7]) & 0xff) << 24) |
- ((((uint32) mem[6]) & 0xff) << 16) |
- ((((uint32) mem[5]) & 0xff) << 8) |
- (((uint32) mem[4]) & 0xff);
- /* Fall through to 4 */
- case 2:
- data[0] = ((((uint32) mem[3]) & 0xff) << 24) |
- ((((uint32) mem[2]) & 0xff) << 16) |
- ((((uint32) mem[1]) & 0xff) << 8) |
- (((uint32) mem[0]) & 0xff);
+ waddr ^= EBT;
+ mem[waddr] = *data & 0x0ff;
+ *ws = mem_ramw_ws + 3;
break;
case 1:
- data[0] = ((((uint32) mem[1]) & 0xff) << 8) |
- (((uint32) mem[0]) & 0xff);
- break;
- case 0:
- data[0] = mem[0] & 0xff;
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 2;
+#endif
+ memcpy (&mem[waddr], data, 2);
+ *ws = mem_ramw_ws + 3;
break;
- }
- }
-}
-
-
-/* Store data in target byte order. MEM points to location to store data;
- DATA points to words in host byte order to be stored. SZ contains log(2)
- of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
- 2 (one word), or 3 (two words). */
-
-static void
-store_bytes (mem, data, sz)
- unsigned char *mem;
- uint32 *data;
- int sz;
-{
- if (CURRENT_TARGET_BYTE_ORDER == LITTLE_ENDIAN) {
- switch (sz) {
- case 3:
- mem[7] = (data[1] >> 24) & 0xff;
- mem[6] = (data[1] >> 16) & 0xff;
- mem[5] = (data[1] >> 8) & 0xff;
- mem[4] = data[1] & 0xff;
- /* Fall through to 2 */
case 2:
- mem[3] = (data[0] >> 24) & 0xff;
- mem[2] = (data[0] >> 16) & 0xff;
- /* Fall through to 1 */
- case 1:
- mem[1] = (data[0] >> 8) & 0xff;
- /* Fall through to 0 */
- case 0:
- mem[0] = data[0] & 0xff;
+ memcpy (&mem[waddr], data, 4);
+ *ws = mem_ramw_ws;
break;
- }
- } else {
- switch (sz) {
case 3:
- mem[7] = data[1] & 0xff;
- mem[6] = (data[1] >> 8) & 0xff;
- mem[5] = (data[1] >> 16) & 0xff;
- mem[4] = (data[1] >> 24) & 0xff;
- /* Fall through to 2 */
- case 2:
- mem[3] = data[0] & 0xff;
- mem[2] = (data[0] >> 8) & 0xff;
- mem[1] = (data[0] >> 16) & 0xff;
- mem[0] = (data[0] >> 24) & 0xff;
- break;
- case 1:
- mem[1] = data[0] & 0xff;
- mem[0] = (data[0] >> 8) & 0xff;
- break;
- case 0:
- mem[0] = data[0] & 0xff;
+ memcpy (&mem[waddr], data, 8);
+ *ws = 2 * mem_ramw_ws + STD_WS;
break;
-
- }
}
}
@@ -1695,7 +1602,7 @@ memory_read(asi, addr, data, sz, ws)
#endif
if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) {
- fetch_bytes (asi, &ramb[addr & mem_rammask], data, sz);
+ memcpy (data, &ramb[addr & mem_rammask & ~3], 4);
*ws = mem_ramr_ws;
return 0;
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
@@ -1713,7 +1620,7 @@ memory_read(asi, addr, data, sz, ws)
} else if (era) {
if ((addr < 0x100000) ||
((addr>= 0x80000000) && (addr < 0x80100000))) {
- fetch_bytes (asi, &romb[addr & ROM_MASK], data, sz);
+ memcpy (data, &romb[addr & ROM_MASK & ~3], 4);
*ws = 4;
return 0;
} else if ((addr >= 0x10000000) &&
@@ -1724,13 +1631,12 @@ memory_read(asi, addr, data, sz, ws)
}
} else if (addr < mem_romsz) {
- fetch_bytes (asi, &romb[addr], data, sz);
- *ws = mem_romr_ws;
- return 0;
-
+ memcpy (data, &romb[addr & ~3], 4);
+ *ws = mem_romr_ws;
+ return 0;
#else
} else if (addr < mem_romsz) {
- fetch_bytes (asi, &romb[addr], data, sz);
+ memcpy (data, &romb[addr & ~3], 4);
*ws = mem_romr_ws;
return 0;
#endif
@@ -1793,21 +1699,8 @@ memory_write(asi, addr, data, sz, ws)
return 1;
}
}
-
- store_bytes (&ramb[addr & mem_rammask], data, sz);
-
- switch (sz) {
- case 0:
- case 1:
- *ws = mem_ramw_ws + 3;
- break;
- case 2:
- *ws = mem_ramw_ws;
- break;
- case 3:
- *ws = 2 * mem_ramw_ws + STD_WS;
- break;
- }
+ waddr = addr & mem_rammask;
+ store_bytes (ramb, waddr, data, sz, ws);
return 0;
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
if ((sz != 2) || (asi != 0xb)) {
@@ -1831,7 +1724,7 @@ memory_write(asi, addr, data, sz, ws)
((addr < 0x100000) || ((addr >= 0x80000000) && (addr < 0x80100000)))) {
addr &= ROM_MASK;
*ws = sz == 3 ? 8 : 4;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return 0;
} else if ((addr >= 0x10000000) &&
(addr < (0x10000000 + (512 << (mec_iocr & 0x0f)))) &&
@@ -1847,7 +1740,7 @@ memory_write(asi, addr, data, sz, ws)
*ws = mem_romw_ws + 1;
if (sz == 3)
*ws += mem_romw_ws + STD_WS;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return 0;
#else
@@ -1858,7 +1751,7 @@ memory_write(asi, addr, data, sz, ws)
*ws = mem_romw_ws + 1;
if (sz == 3)
*ws += mem_romw_ws + STD_WS;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return 0;
#endif
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index e6ce6c5..d31032b 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -370,6 +370,36 @@ div64 (uint32 n1_hi, uint32 n1_low, uint32 n2, uint32 *result, int msigned)
}
+static int
+extract_short (uint32 data, uint32 address)
+{
+ return ((data >> ((2 - (address & 2)) * 8)) & 0xffff);
+}
+
+static int
+extract_short_signed (uint32 data, uint32 address)
+{
+ uint32 tmp = ((data >> ((2 - (address & 2)) * 8)) & 0xffff);
+ if (tmp & 0x8000)
+ tmp |= 0xffff0000;
+ return tmp;
+}
+
+static int
+extract_byte (uint32 data, uint32 address)
+{
+ return ((data >> ((3 - (address & 3)) * 8)) & 0xff);
+}
+
+static int
+extract_byte_signed (uint32 data, uint32 address)
+{
+ uint32 tmp = ((data >> ((3 - (address & 3)) * 8)) & 0xff);
+ if (tmp & 0x80)
+ tmp |= 0xffffff00;
+ return tmp;
+}
+
int
dispatch_instruction(sregs)
struct pstate *sregs;
@@ -1077,7 +1107,8 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_PRIVI;
break;
}
- sregs->psr = (rs1 ^ operand2) & 0x00f03fff;
+ sregs->psr = (sregs->psr & 0xff000000) |
+ (rs1 ^ operand2) & 0x00f03fff;
break;
case WRWIM:
if (!(sregs->psr & PSR_S)) {
@@ -1213,8 +1244,10 @@ dispatch_instruction(sregs)
else
rdd = &(sregs->g[rd]);
}
- mexc = memory_read(asi, address, ddata, 3, &ws);
- sregs->hold += ws * 2;
+ mexc = memory_read (asi, address, ddata, 2, &ws);
+ sregs->hold += ws;
+ mexc |= memory_read (asi, address+4, &ddata[1], 2, &ws);
+ sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1252,6 +1285,7 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
+ data = extract_byte (data, address);
*rdd = data;
data = 0x0ff;
mexc = memory_write(asi, address, &data, 0, &ws);
@@ -1274,8 +1308,10 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
- if ((op3 == LDSB) && (data & 0x80))
- data |= 0xffffff00;
+ if (op3 == LDSB)
+ data = extract_byte_signed (data, address);
+ else
+ data = extract_byte (data, address);
*rdd = data;
break;
case LDSHA:
@@ -1293,8 +1329,10 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
- if ((op3 == LDSH) && (data & 0x8000))
- data |= 0xffff0000;
+ if (op3 == LDSH)
+ data = extract_short_signed (data, address);
+ else
+ data = extract_short (data, address);
*rdd = data;
break;
case LDF:
@@ -1337,8 +1375,10 @@ dispatch_instruction(sregs)
((sregs->frs2 >> 1) == (rd >> 1)))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_read(asi, address, ddata, 3, &ws);
- sregs->hold += ws * 2;
+ mexc = memory_read (asi, address, ddata, 2, &ws);
+ sregs->hold += ws;
+ mexc |= memory_read (asi, address+4, &ddata[1], 2, &ws);
+ sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
sregs->trap = TRAP_DEXC;
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 479c5ee..9297e07 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -30,10 +30,8 @@
#include "sim-config.h"
#include <inttypes.h>
-
#define VAL(x) strtoul(x,(char **)NULL,0)
-extern int current_target_byte_order;
struct disassemble_info dinfo;
struct pstate sregs;
extern struct estate ebase;
@@ -184,18 +182,10 @@ get_regi(struct pstate * sregs, int32 reg, char *buf)
default:break;
}
}
- if (current_target_byte_order == BIG_ENDIAN) {
- buf[0] = (rval >> 24) & 0x0ff;
- buf[1] = (rval >> 16) & 0x0ff;
- buf[2] = (rval >> 8) & 0x0ff;
- buf[3] = rval & 0x0ff;
- }
- else {
- buf[3] = (rval >> 24) & 0x0ff;
- buf[2] = (rval >> 16) & 0x0ff;
- buf[1] = (rval >> 8) & 0x0ff;
- buf[0] = rval & 0x0ff;
- }
+ buf[0] = (rval >> 24) & 0x0ff;
+ buf[1] = (rval >> 16) & 0x0ff;
+ buf[2] = (rval >> 8) & 0x0ff;
+ buf[3] = rval & 0x0ff;
}
@@ -787,15 +777,15 @@ disp_ctrl(sregs)
struct pstate *sregs;
{
- unsigned char i[4];
+ uint32 i;
printf("\n psr: %08X wim: %08X tbr: %08X y: %08X\n",
sregs->psr, sregs->wim, sregs->tbr, sregs->y);
- sis_memory_read(sregs->pc, i, 4);
- printf("\n pc: %08X = %02X%02X%02X%02X ", sregs->pc,i[0],i[1],i[2],i[3]);
+ sis_memory_read (sregs->pc, (char *) &i, 4);
+ printf ("\n pc: %08X = %08X ", sregs->pc, i);
print_insn_sparc_sis(sregs->pc, &dinfo);
- sis_memory_read(sregs->npc, i, 4);
- printf("\n npc: %08X = %02X%02X%02X%02X ",sregs->npc,i[0],i[1],i[2],i[3]);
+ sis_memory_read (sregs->npc, (char *) &i, 4);
+ printf ("\n npc: %08X = %08X ", sregs->npc, i);
print_insn_sparc_sis(sregs->npc, &dinfo);
if (sregs->err_mode)
printf("\n IU in error mode");
@@ -809,22 +799,25 @@ disp_mem(addr, len)
{
uint32 i;
- unsigned char data[4];
+ union {
+ unsigned char u8[4];
+ uint32 u32;
+ } data;
uint32 mem[4], j;
char *p;
for (i = addr & ~3; i < ((addr + len) & ~3); i += 16) {
printf("\n %8X ", i);
for (j = 0; j < 4; j++) {
- sis_memory_read((i + (j * 4)), data, 4);
- printf("%02x%02x%02x%02x ", data[0],data[1],data[2],data[3]);
- mem[j] = *((int *) &data);
+ sis_memory_read ((i + (j * 4)), data.u8, 4);
+ printf ("%08x ", data.u32);
+ mem[j] = data.u32;
}
printf(" ");
p = (char *) mem;
for (j = 0; j < 16; j++) {
- if (isprint(p[j]))
- putchar(p[j]);
+ if (isprint (p[j ^ EBT]))
+ putchar (p[j ^ EBT]);
else
putchar('.');
}
@@ -839,11 +832,14 @@ dis_mem(addr, len, info)
struct disassemble_info *info;
{
uint32 i;
- unsigned char data[4];
+ union {
+ unsigned char u8[4];
+ uint32 u32;
+ } data;
for (i = addr & -3; i < ((addr & -3) + (len << 2)); i += 4) {
- sis_memory_read(i, data, 4);
- printf(" %08x %02x%02x%02x%02x ", i, data[0],data[1],data[2],data[3]);
+ sis_memory_read (i, data.u8, 4);
+ printf (" %08x %08x ", i, data.u32);
print_insn_sparc_sis(i, info);
if (i >= 0xfffffffc) break;
printf("\n");
@@ -1041,6 +1037,7 @@ bfd_load (const char *fname)
asection *section;
bfd *pbfd;
const bfd_arch_info_type *arch;
+ int i;
pbfd = bfd_openr(fname, 0);
@@ -1054,14 +1051,6 @@ bfd_load (const char *fname)
}
arch = bfd_get_arch_info (pbfd);
- if (bfd_little_endian (pbfd) || arch->mach == bfd_mach_sparc_sparclite_le)
- current_target_byte_order = LITTLE_ENDIAN;
- else
- current_target_byte_order = BIG_ENDIAN;
- if (sis_verbose)
- printf("file %s is %s-endian.\n", fname,
- current_target_byte_order == BIG_ENDIAN ? "big" : "little");
-
if (sis_verbose)
printf("loading %s:", fname);
for (section = pbfd->sections; section; section = section->next) {
@@ -1093,10 +1082,7 @@ bfd_load (const char *fname)
sizeof (marker));
if (strncmp (marker.signature, "DaTa", 4) == 0)
{
- if (current_target_byte_order == BIG_ENDIAN)
- section_address = bfd_getb32 (marker.sdata);
- else
- section_address = bfd_getl32 (marker.sdata);
+ section_address = bfd_getb32 (marker.sdata);
}
}
}
@@ -1121,7 +1107,8 @@ bfd_load (const char *fname)
bfd_get_section_contents(pbfd, section, buffer, fptr, count);
- sis_memory_write(section_address, buffer, count);
+ for (i = 0; i < count; i++)
+ sis_memory_write ((section_address + i) ^ EBT, &buffer[i], 1);
section_address += count;
fptr += count;
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 59fb635..235af8b 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -40,7 +40,6 @@ extern struct disassemble_info dinfo;
extern struct pstate sregs;
extern struct estate ebase;
-extern int current_target_byte_order;
extern int ctrl_c;
extern int nfp;
extern int ift;
@@ -252,7 +251,11 @@ sim_open (kind, callback, abfd, argv)
sregs.freq = freq ? freq : 15;
termsave = fcntl(0, F_GETFL, 0);
INIT_DISASSEMBLE_INFO(dinfo, stdout,(fprintf_ftype)fprintf);
+#ifdef HOST_LITTLE_ENDIAN
+ dinfo.endian = BFD_ENDIAN_LITTLE;
+#else
dinfo.endian = BFD_ENDIAN_BIG;
+#endif
reset_all();
ebase.simtime = 0;
init_sim();
@@ -311,14 +314,10 @@ sim_store_register(sd, regno, value, length)
unsigned char *value;
int length;
{
- /* FIXME: Review the computation of regval. */
int regval;
- if (current_target_byte_order == BIG_ENDIAN)
- regval = (value[0] << 24) | (value[1] << 16)
+
+ regval = (value[0] << 24) | (value[1] << 16)
| (value[2] << 8) | value[3];
- else
- regval = (value[3] << 24) | (value[2] << 16)
- | (value[1] << 8) | value[0];
set_regi(&sregs, regno, regval);
return length;
}
@@ -336,23 +335,25 @@ sim_fetch_register(sd, regno, buf, length)
}
int
-sim_write(sd, mem, buf, length)
- SIM_DESC sd;
- SIM_ADDR mem;
- const unsigned char *buf;
- int length;
+sim_write (SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length)
{
- return sis_memory_write (mem, buf, length);
+ int i, len;
+
+ for (i = 0; i < length; i++) {
+ sis_memory_write ((mem + i) ^ EBT, &buf[i], 1);
+ }
+ return length;
}
int
-sim_read(sd, mem, buf, length)
- SIM_DESC sd;
- SIM_ADDR mem;
- unsigned char *buf;
- int length;
+sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
{
- return sis_memory_read (mem, buf, length);
+ int i, len;
+
+ for (i = 0; i < length; i++) {
+ sis_memory_read ((mem + i) ^ EBT, &buf[i], 1);
+ }
+ return length;
}
void
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index 6259067..92880e1 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -223,7 +223,11 @@ main(argc, argv)
sregs.freq = freq;
INIT_DISASSEMBLE_INFO(dinfo, stdout, (fprintf_ftype) fprintf);
+#ifdef HOST_LITTLE_ENDIAN
+ dinfo.endian = BFD_ENDIAN_LITTLE;
+#else
dinfo.endian = BFD_ENDIAN_BIG;
+#endif
termsave = fcntl(0, F_GETFL, 0);
using_history();
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index ae39ad1..99ae347 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -28,8 +28,10 @@
#if WITH_HOST_BYTE_ORDER == BIG_ENDIAN
#define HOST_BIG_ENDIAN
+#define EBT 0
#else
#define HOST_LITTLE_ENDIAN
+#define EBT 3
#endif
#define I_ACC_EXC 1
generated by cgit v1.1 at 2024-12-02 08:21:36 +0000