#include "mmu.h"
#include "debug_rom/debug_rom.h"
-#include "debug_rom/debug_rom_defines.h"
+#include "debug_rom_defines.h"
#if 0
# define D(x) x
debug_abstract_start(debug_progbuf_start - debug_abstract_size*4),
sim(sim)
{
+ D(fprintf(stderr, "debug_data_start=0x%x\n", debug_data_start));
+ D(fprintf(stderr, "debug_progbuf_start=0x%x\n", debug_progbuf_start));
+ D(fprintf(stderr, "debug_abstract_start=0x%x\n", debug_abstract_start));
+
program_buffer = new uint8_t[program_buffer_bytes];
memset(halted, 0, sizeof(halted));
return true;
}
+ unsigned i = 0;
if (get_field(command, AC_ACCESS_REGISTER_TRANSFER)) {
- if (regno < 0x1000 || regno >= 0x1020) {
- abstractcs.cmderr = CMDERR_NOTSUP;
- return true;
- }
+ if (regno < 0x1000 && progbufsize < 2) {
+ // Make the debugger use the program buffer if it's available, so it
+ // can test both use cases.
+ write32(debug_abstract, i++, csrw(S0, CSR_DSCRATCH));
+
+ if (write) {
+ switch (size) {
+ case 2:
+ write32(debug_abstract, i++, lw(S0, ZERO, debug_data_start));
+ break;
+ case 3:
+ write32(debug_abstract, i++, ld(S0, ZERO, debug_data_start));
+ break;
+ default:
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ return true;
+ }
+ write32(debug_abstract, i++, csrw(S0, regno));
+
+ } else {
+ write32(debug_abstract, i++, csrr(S0, regno));
+ switch (size) {
+ case 2:
+ write32(debug_abstract, i++, sw(S0, ZERO, debug_data_start));
+ break;
+ case 3:
+ write32(debug_abstract, i++, sd(S0, ZERO, debug_data_start));
+ break;
+ default:
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ return true;
+ }
+ }
+ write32(debug_abstract, i++, csrr(S0, CSR_DSCRATCH));
+
+ } else if (regno >= 0x1000 && regno < 0x1020) {
+ unsigned regnum = regno - 0x1000;
+
+ switch (size) {
+ case 2:
+ if (write)
+ write32(debug_abstract, i++, lw(regnum, ZERO, debug_data_start));
+ else
+ write32(debug_abstract, i++, sw(regnum, ZERO, debug_data_start));
+ break;
+ case 3:
+ if (write)
+ write32(debug_abstract, i++, ld(regnum, ZERO, debug_data_start));
+ else
+ write32(debug_abstract, i++, sd(regnum, ZERO, debug_data_start));
+ break;
+ default:
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ return true;
+ }
- unsigned regnum = regno - 0x1000;
+ } else if (regno >= 0x1020 && regno < 0x1040) {
+ // Don't force the debugger to use progbuf if it exists, so the
+ // debugger has to make the decision not to use abstract commands to
+ // access 64-bit FPRs on 32-bit targets.
+ unsigned fprnum = regno - 0x1020;
+
+ if (write) {
+ switch (size) {
+ case 2:
+ write32(debug_abstract, i++, flw(fprnum, ZERO, debug_data_start));
+ break;
+ case 3:
+ write32(debug_abstract, i++, fld(fprnum, ZERO, debug_data_start));
+ break;
+ default:
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ return true;
+ }
- switch (size) {
- case 2:
- if (write)
- write32(debug_abstract, 0, lw(regnum, ZERO, debug_data_start));
- else
- write32(debug_abstract, 0, sw(regnum, ZERO, debug_data_start));
- break;
- case 3:
- if (write)
- write32(debug_abstract, 0, ld(regnum, ZERO, debug_data_start));
- else
- write32(debug_abstract, 0, sd(regnum, ZERO, debug_data_start));
- break;
- /*
- case 4:
- if (write)
- write32(debug_rom_code, 0, lq(regnum, ZERO, debug_data_start));
- else
- write32(debug_rom_code, 0, sq(regnum, ZERO, debug_data_start));
- break;
- */
- default:
+ } else {
+ switch (size) {
+ case 2:
+ write32(debug_abstract, i++, fsw(fprnum, ZERO, debug_data_start));
+ break;
+ case 3:
+ write32(debug_abstract, i++, fsd(fprnum, ZERO, debug_data_start));
+ break;
+ default:
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ return true;
+ }
+ }
+
+ } else {
abstractcs.cmderr = CMDERR_NOTSUP;
return true;
}
- } else {
- //NOP
- write32(debug_abstract, 0, addi(ZERO, ZERO, 0));
}
if (get_field(command, AC_ACCESS_REGISTER_POSTEXEC)) {
- // Since the next instruction is what we will use, just use nother NOP
- // to get there.
- write32(debug_abstract, 1, addi(ZERO, ZERO, 0));
+ write32(debug_abstract, i,
+ jal(ZERO, debug_progbuf_start - debug_abstract_start - 4 * i));
+ i++;
} else {
- write32(debug_abstract, 1, ebreak());
+ write32(debug_abstract, i++, ebreak());
}
debug_rom_flags[dmcontrol.hartsel] |= 1 << DEBUG_ROM_FLAG_GO;