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Add more write system calls; Add system call tracing

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Michael Meissner 1996-02-21 21:58:43 +00:00
parent 13f6c7eac1
commit ad836e027c
2 changed files with 207 additions and 24 deletions
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11
sim/ppc/ChangeLog
View File

@ -1,5 +1,16 @@
Wed Feb 21 10:39:35 1996 Michael Meissner <meissner@tiktok.cygnus.com> Wed Feb 21 10:39:35 1996 Michael Meissner <meissner@tiktok.cygnus.com>
* emul_bugapi.c (bug_mapping): New structure to map bug system
call numbers to a string.
(toplevel): Add remaining bugapi system calls.
(emul_bugapi_instruction_name): Map bugapi system call number to a
string.
(emul_bugapi_do_write): Common code to process write system calls.
(emul_bugapi_instruction_call): If os-emul tracing is on, trace
the system call. Use the name to print unknown system call.
Correct implementation of _OUTLN. Add support for _OUTSTR and
_PCRLR system calls.
* psim.c (psim_options): Call device_add_string_property, not * psim.c (psim_options): Call device_add_string_property, not
device_tree_add_parsed, since we want to add the model as a device_tree_add_parsed, since we want to add the model as a
string, and 603/604 look like integers. string, and 603/604 look like integers.

220
sim/ppc/emul_bugapi.c
View File

@ -23,26 +23,119 @@
#define _EMUL_BUGAPI_C_ #define _EMUL_BUGAPI_C_
/* from bug.S - Dale Rahn */ /* from PowerPCBug Debugging Package User's Manual, part 2 of 2 and also bug.S - Dale Rahn */
#define _INCHR 0x00 #define _INCHR 0x000 /* Input character */
#define _INSTAT 0x01 #define _INSTAT 0x001 /* Input serial port status */
#define _INLN 0x02 #define _INLN 0x002 /* Input line (pointer / pointer format) */
#define _READSTR 0x03 #define _READSTR 0x003 /* Input string (pointer / count format) */
#define _READLN 0x04 #define _READLN 0x004 /* Input line (pointer / count format) */
#define _OUTCHR 0x20 #define _CHKBRK 0x005 /* Check for break */
#define _OUTSTR 0x21 #define _DSKRD 0x010 /* Disk read */
#define _OUTLN 0x22 #define _DKSWR 0x011 /* Disk write */
#define _DSKRD 0x10 #define _DSKCFIG 0x012 /* Disk configure */
#define _DSKWR 0x11 #define _DSKFMT 0x014 /* Disk format */
#define _DSKCFIG 0x12 #define _DSKCTRL 0x015 /* Disk control */
#define _DSKFMT 0x14 #define _NETRD 0x018 /* Read from host */
#define _DSKCTRL 0x15 #define _NETWR 0x019 /* Write to host */
#define _WRITE 0x23 #define _NETCFIG 0x01a /* Configure network parameters */
#define _WRITELN 0x24 #define _NETOPN 0x01b /* Open file for reading */
#define _DELAY 0x43 #define _NETFRD 0x01c /* Retreive specified file blocks */
#define _RTC_RD 0x53 #define _NETCTRL 0x01d /* Implement special control functions */
#define _RETURN 0x63 #define _OUTCHR 0x020 /* Output character (pointer / pointer format) */
#define _BRD_ID 0x70 #define _OUTSTR 0x021 /* Output string (pointer / pointer format) */
#define _OUTLN 0x022 /* Output line (pointer / pointer format) */
#define _WRITE 0x023 /* Output string (pointer / count format) */
#define _WRITELN 0x024 /* Output line (pointer / count format) */
#define _WRITDLN 0x025 /* Output line with data (pointer / count format) */
#define _PCRLF 0x026 /* Output carriage return and line feed */
#define _ERASLN 0x027 /* Erase line */
#define _WRITD 0x028 /* Output string with data (pointer / count format) */
#define _SNDBRK 0x029 /* Send break */
#define _DELAY 0x043 /* Timer delay */
#define _RTC_TM 0x050 /* Time initialization for RTC */
#define _RTC_DT 0x051 /* Date initialization for RTC */
#define _RTC_DSP 0x052 /* Display RTC time and date */
#define _RTC_RD 0x053 /* Read the RTC registers */
#define _REDIR 0x060 /* Redirect I/O of a system call function */
#define _REDIR_I 0x061 /* Redirect input */
#define _REDIR_O 0x062 /* Redirect output */
#define _RETURN 0x063 /* Return to PPCbug */
#define _BINDEC 0x064 /* Convert binary to binary coded decimal (BCD) */
#define _CHANGEV 0x067 /* Parse value */
#define _STRCMP 0x068 /* Compare two strings (pointer / count format) */
#define _MULU32 0x069 /* Multiply two 32-bit unsigned integers */
#define _DIVU32 0x06a /* Divide two 32-bit unsigned integers */
#define _CHK_SUM 0x06b /* Generate checksum */
#define _BRD_ID 0x070 /* Return pointer to board ID packet */
#define _ENVIRON 0x071 /* Access boot environment parameters */
#define _DIAGFCN 0x074 /* Diagnostic function(s) */
#define _SIOPEPS 0x090 /* Retrieve SCSI pointers */
#define _IOINQ 0x120 /* Port inquire */
#define _IOINFORM 0x124 /* Port inform */
#define _IOCONFIG 0x128 /* Port configure */
#define _IODELETE 0x12c /* Port delete */
#define _SYMBOLTA 0x130 /* Attach symbol table */
#define _SYMBOLDA 0x131 /* Detach symbol table */
struct bug_map {
int value;
const char *info;
};
static const struct bug_map bug_mapping[] = {
{ _INCHR, ".INCHR -- Input character" },
{ _INSTAT, ".INSTAT -- Input serial port status" },
{ _INLN, ".INLN -- Input line (pointer / pointer format)" },
{ _READSTR, ".READSTR -- Input string (pointer / count format)" },
{ _READLN, ".READLN -- Input line (pointer / count format)" },
{ _CHKBRK, ".CHKBRK -- Check for break" },
{ _DSKRD, ".DSKRD -- Disk read" },
{ _DKSWR, ".DKSWR -- Disk write" },
{ _DSKCFIG, ".DSKCFIG -- Disk configure" },
{ _DSKFMT, ".DSKFMT -- Disk format" },
{ _DSKCTRL, ".DSKCTRL -- Disk control" },
{ _NETRD, ".NETRD -- Read from host" },
{ _NETWR, ".NETWR -- Write to host" },
{ _NETCFIG, ".NETCFIG -- Configure network parameters" },
{ _NETOPN, ".NETOPN -- Open file for reading" },
{ _NETFRD, ".NETFRD -- Retreive specified file blocks" },
{ _NETCTRL, ".NETCTRL -- Implement special control functions" },
{ _OUTCHR, ".OUTCHR -- Output character" },
{ _OUTSTR, ".OUTSTR -- Output string (pointer / pointer format)" },
{ _OUTLN, ".OUTLN -- Output line (pointer / pointer format)" },
{ _WRITE, ".WRITE -- Output string (pointer / count format)" },
{ _WRITELN, ".WRITELN -- Output line (pointer / count format)" },
{ _WRITDLN, ".WRITDLN -- Output line with data (pointer / count format)" },
{ _PCRLF, ".PCRLF -- Output carriage return and line feed" },
{ _ERASLN, ".ERASLN -- Erase line" },
{ _WRITD, ".WRITD -- Output string with data (pointer / count format)" },
{ _SNDBRK, ".SNDBRK -- Send break" },
{ _DELAY, ".DELAY -- Timer delay" },
{ _RTC_TM, ".RTC_TM -- Time initialization for RTC" },
{ _RTC_DT, ".RTC_DT -- Date initialization for RTC" },
{ _RTC_DSP, ".RTC_DSP -- Display RTC time and date" },
{ _RTC_RD, ".RTC_RD -- Read the RTC registers" },
{ _REDIR, ".REDIR -- Redirect I/O of a system call function" },
{ _REDIR, ".REDIR -- Redirect input" },
{ _REDIR, ".REDIR -- Redirect output" },
{ _RETURN, ".RETURN -- Return to PPCbug" },
{ _BINDEC, ".BINDEC -- Convert binary to binary coded decimal (BCD)" },
{ _CHANGEV, ".CHANGEV -- Parse value" },
{ _STRCMP, ".STRCMP -- Compare two strings (pointer / count format)" },
{ _MULU32, ".MULU32 -- Multiply two 32-bit unsigned integers" },
{ _DIVU32, ".DIVU32 -- Divide two 32-bit unsigned integers" },
{ _CHK_SUM, ".CHK_SUM -- Generate checksum" },
{ _BRD_ID, ".BRD_ID -- Return pointer to board ID packet" },
{ _ENVIRON, ".ENVIRON -- Access boot environment parameters" },
{ _DIAGFCN, ".DIAGFCN -- Diagnostic function(s)" },
{ _SIOPEPS, ".SIOPEPS -- Retrieve SCSI pointers" },
{ _IOINQ, ".IOINQ -- Port inquire" },
{ _IOINFORM, ".IOINFORM -- Port inform" },
{ _IOCONFIG, ".IOCONFIG -- Port configure" },
{ _IODELETE, ".IODELETE -- Port delete" },
{ _SYMBOLTA, ".SYMBOLTA -- Attach symbol table" },
{ _SYMBOLDA, ".SYMBOLDA -- Detach symbol table" },
};
/* Note: this module is called via a table. There is no benefit in /* Note: this module is called via a table. There is no benefit in
making it inline */ making it inline */
@ -176,6 +269,60 @@ emul_bugapi_init(os_emul_data *emul_data,
/* nothing happens here */ /* nothing happens here */
} }
static const char *
emul_bugapi_instruction_name(int call_id)
{
static char buffer[40];
int i;
for (i = 0; i < sizeof (bug_mapping) / sizeof (bug_mapping[0]); i++)
{
if (bug_mapping[i].value == call_id)
return bug_mapping[i].info;
}
(void) sprintf (buffer, "Unknown bug call 0x%x", call_id);
return buffer;
}
static void
emul_bugapi_do_write(cpu *processor,
unsigned_word cia,
unsigned_word buf,
int nbytes,
const char *suffix)
{
void *scratch_buffer = NULL;
char *p;
int nr_moved;
/* get a tempoary bufer */
if (nbytes > 0)
{
scratch_buffer = zalloc(nbytes);
/* copy in */
nr_moved = vm_data_map_read_buffer(cpu_data_map(processor),
scratch_buffer,
buf,
nbytes);
if (nr_moved != nbytes) {
/* FIXME - should handle better */
error("system_call()write copy failed (nr_moved=%d != nbytes=%d)\n",
nr_moved, nbytes);
}
/* write */
for (p = (char *)scratch_buffer; nbytes-- > 0; p++)
printf_filtered("%c", *p);
zfree(scratch_buffer);
}
if (suffix)
printf_filtered("%s", suffix);
}
static int static int
emul_bugapi_instruction_call(cpu *processor, emul_bugapi_instruction_call(cpu *processor,
unsigned_word cia, unsigned_word cia,
@ -183,23 +330,48 @@ emul_bugapi_instruction_call(cpu *processor,
os_emul_data *emul_data) os_emul_data *emul_data)
{ {
const int call_id = cpu_registers(processor)->gpr[10]; const int call_id = cpu_registers(processor)->gpr[10];
const char *my_prefix = "bugapi";
ITRACE (trace_os_emul,(" 0x%x %s, r3 = 0x%lx, r4 = 0x%lx\n",
call_id, emul_bugapi_instruction_name (call_id),
(long)cpu_registers(processor)->gpr[3],
(long)cpu_registers(processor)->gpr[4]));;
/* check that this isn't an invalid instruction */ /* check that this isn't an invalid instruction */
if (cia != emul_data->system_call_address) if (cia != emul_data->system_call_address)
return 0; return 0;
switch (call_id) { switch (call_id) {
default:
error("emul-bugapi: unimplemented bugapi %s from address 0x%lx\n",
emul_bugapi_instruction_name (call_id), SRR0);
break;
/* output a character, r3 = character */
case _OUTCHR: case _OUTCHR:
printf_filtered("%c", (char)cpu_registers(processor)->gpr[3]); printf_filtered("%c", (char)cpu_registers(processor)->gpr[3]);
break; break;
/* output a string, r3 = ptr to 1st byte, r4 = ptr to last byte+1 */
case _OUTSTR:
emul_bugapi_do_write(processor, cia,
cpu_registers(processor)->gpr[3],
cpu_registers(processor)->gpr[4] - cpu_registers(processor)->gpr[3],
(const char *)0);
break;
/* output a string followed by \r\n, r3 = ptr to 1st byte, r4 = ptr to last byte+1 */
case _OUTLN: case _OUTLN:
emul_bugapi_do_write(processor, cia,
cpu_registers(processor)->gpr[3],
cpu_registers(processor)->gpr[4] - cpu_registers(processor)->gpr[3],
"\n");
break;
/* output a \r\n */
case _PCRLF:
printf_filtered("\n"); printf_filtered("\n");
break; break;
/* return to ppcbug monitor */
case _RETURN: case _RETURN:
cpu_halt(processor, cia, was_exited, 0); /* always succeeds */ cpu_halt(processor, cia, was_exited, 0); /* always succeeds */
break; break;
default:
error("emul-bugapi: unimplemented bugapi call 0x%x from address 0x%lx\n",
call_id, SRR0);
break;
} }
return 1; return 1;
/* the instruction following this one is a RFI. Thus by just /* the instruction following this one is a RFI. Thus by just