diff options
Diffstat (limited to 'tools/4.11/gdb/sparc/7.9/0003-sim-erc32-Perform-pseudo-init-if-binary-linked-to-no.patch')
| -rw-r--r-- | tools/4.11/gdb/sparc/7.9/0003-sim-erc32-Perform-pseudo-init-if-binary-linked-to-no.patch | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/tools/4.11/gdb/sparc/7.9/0003-sim-erc32-Perform-pseudo-init-if-binary-linked-to-no.patch b/tools/4.11/gdb/sparc/7.9/0003-sim-erc32-Perform-pseudo-init-if-binary-linked-to-no.patch new file mode 100644 index 0000000..dca67f4 --- /dev/null +++ b/tools/4.11/gdb/sparc/7.9/0003-sim-erc32-Perform-pseudo-init-if-binary-linked-to-no.patch @@ -0,0 +1,89 @@ +From 78a59b9928b59065cbffca153db9620c0ff80036 Mon Sep 17 00:00:00 2001 +From: Jiri Gaisler <jiri@gaisler.se> +Date: Sat, 30 Aug 2014 22:53:56 +0200 +Subject: [PATCH 03/23] sim/erc32: Perform pseudo-init if binary linked to + non-zero address. + +Binaries produced by most erc32 tool-chains do not include +system initialization. sis will detect this and initialize +necessary registers for memory and timer control. + + * erc32.c (mec_read) allow simulator memory size to be read + by application. (boot_init) initialize memory and timers if + start address is not 0. + + * erc32,c (exe_cmd) call boot_init if start address not 0 + * interf.c (run_sim) Likewise +--- + sim/erc32/erc32.c | 24 ++++++++++++++++++++++++ + sim/erc32/func.c | 2 ++ + sim/erc32/interf.c | 1 + + 3 files changed, 27 insertions(+) + +diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c +index 4d4177e..0f3e870 100644 +--- a/sim/erc32/erc32.c ++++ b/sim/erc32/erc32.c +@@ -743,6 +743,14 @@ mec_read(addr, asi, data) + *data = read_uart(addr); + break; + ++ case 0xF4: /* simulator RAM size in bytes */ ++ *data = 4096*1024; ++ break; ++ ++ case 0xF8: /* simulator ROM size in bytes */ ++ *data = 1024*1024; ++ break; ++ + default: + set_sfsr(MEC_ACC, addr, asi, 1); + return (1); +@@ -1887,3 +1895,19 @@ sis_memory_read(addr, data, length) + memcpy(data, mem, length); + return (length); + } ++ ++extern struct pstate sregs; ++ ++void ++boot_init (void) ++{ ++ mec_write(MEC_WCR, 0); /* zero waitstates */ ++ mec_write(MEC_TRAPD, 0); /* turn off watch-dog */ ++ mec_write(MEC_RTC_SCALER, sregs.freq-1); /* generate 1 MHz RTC tick */ ++ mec_write(MEC_MEMCFG, (3 << 18) | (4 << 10)); /* 1 MB ROM, 4 MB RAM */ ++ sregs.wim = 2; ++ sregs.psr = 0x110010e0; ++ sregs.r[30] = RAM_END; ++ sregs.r[14] = sregs.r[30] - 96*4; ++ mec_mcr |= 1; /* power-down enabled */ ++} +diff --git a/sim/erc32/func.c b/sim/erc32/func.c +index e6744ee..6526085 100644 +--- a/sim/erc32/func.c ++++ b/sim/erc32/func.c +@@ -468,6 +468,8 @@ exec_cmd(sregs, cmd) + } + sregs->pc = len & ~3; + sregs->npc = sregs->pc + 4; ++ if ((sregs->pc != 0) && (ebase.simtime == 0)) ++ boot_init(); + printf("resuming at 0x%08x\n",sregs->pc); + if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) { + stat = run_sim(sregs, VAL(cmd2), 0); +diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c +index 63b3f38..9ac455f 100644 +--- a/sim/erc32/interf.c ++++ b/sim/erc32/interf.c +@@ -78,6 +78,7 @@ run_sim(sregs, icount, dis) + init_stdio(); + sregs->starttime = time(NULL); + irq = 0; ++ if ((sregs->pc != 0) && (ebase.simtime == 0)) boot_init(); + while (!sregs->err_mode & (icount > 0)) { + + sregs->fhold = 0; +-- +1.9.1 + |