99 lines
1.9 KiB
C
99 lines
1.9 KiB
C
/* sparc device support
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Copyright (C) 1999 Cygnus Solutions. */
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#include "sim-main.h"
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#include "dev32.h"
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#ifdef HAVE_DV_SOCKSER
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#include "dv-sockser.h"
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#endif
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/* ??? At present this is to match erc32 so outbyte works. */
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device sparc_devices;
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int
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device_io_read_buffer (device *me, void *source, int space,
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address_word addr, unsigned nr_bytes,
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SIM_CPU *cpu, sim_cia cia)
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{
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SIM_DESC sd = CPU_STATE (cpu);
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if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
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return nr_bytes;
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#ifdef HAVE_DV_SOCKSER
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if (addr == UART_INCHAR_ADDR)
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{
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int c = dv_sockser_read (sd);
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if (c == -1)
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return 0;
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*(char *) source = c;
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return 1;
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}
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if (addr == UART_STATUS_ADDR)
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{
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int status = dv_sockser_status (sd);
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unsigned char *p = source;
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p[0] = 0;
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p[1] = (((status & DV_SOCKSER_INPUT_EMPTY)
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#ifdef UART_INPUT_READY0
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? UART_INPUT_READY : 0)
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#else
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? 0 : UART_INPUT_READY)
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#endif
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+ ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0));
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return 2;
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}
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#endif
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/* erc32 compatibility */
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if (addr == RXSTAT)
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{
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int Ucontrol = 0;
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unsigned char *p = source;
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Ucontrol |= 1;
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Ucontrol |= 0x00060006;
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SETTSI (p, Ucontrol);
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}
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return nr_bytes;
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}
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int
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device_io_write_buffer (device *me, const void *source, int space,
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address_word addr, unsigned nr_bytes,
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SIM_CPU *cpu, sim_cia cia)
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{
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SIM_DESC sd = CPU_STATE (cpu);
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#if 0 && WITH_SCACHE
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if (addr == MCCR_ADDR)
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{
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if ((*(const char *) source & MCCR_CP) != 0)
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scache_flush (sd);
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return nr_bytes;
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}
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#endif
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if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
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return nr_bytes;
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#ifdef HAVE_DV_SOCKSER
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if (addr == UART_OUTCHAR_ADDR)
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{
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int rc = dv_sockser_write (sd, *(char *) source);
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return rc == 1;
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}
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#endif
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if (addr == RXADATA)
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{
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sim_io_printf (sd, "%c", GETTSI (source));
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}
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return nr_bytes;
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}
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void device_error () {}
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