diff options
| author | Ali Saidi <saidi@eecs.umich.edu> | 2006-02-23 15:00:04 -0500 |
|---|---|---|
| committer | Ali Saidi <saidi@eecs.umich.edu> | 2006-02-23 15:00:04 -0500 |
| commit | a50e054ceded6fa3f700385ed93dcc76c05cb13b (patch) | |
| tree | 71e585f8f1fb479c935cae15a89f6be0b4d7d511 /system/alpha | |
| parent | c3d47c1de8db97e1bf6d4a075d9bcc42af010e34 (diff) | |
| download | gem5-a50e054ceded6fa3f700385ed93dcc76c05cb13b.tar.xz | |
change from bootStrap* to using the cpuStack array for setting up
other processor stacks
Diffstat (limited to 'system/alpha')
| -rw-r--r-- | system/alpha/console/console.c | 5 | ||||
| -rw-r--r-- | system/alpha/console/dbmentry.S | 23 |
2 files changed, 20 insertions, 8 deletions
diff --git a/system/alpha/console/console.c b/system/alpha/console/console.c index e5be19f5f..1bf6a3ce2 100644 --- a/system/alpha/console/console.c +++ b/system/alpha/console/console.c @@ -187,8 +187,6 @@ main(int argc, char **argv) m5Conf.diskOperation = m5AlphaAccess->diskOperation; m5Conf.outputChar = m5AlphaAccess->outputChar; m5Conf.inputChar = m5AlphaAccess->inputChar; - m5Conf.bootStrapImpure = m5AlphaAccess->bootStrapImpure; - m5Conf.bootStrapCPU = m5AlphaAccess->bootStrapCPU; if (m5Conf.version != ALPHA_ACCESS_VERSION) { panic("Console version mismatch. Console expects %d. has %d \n", @@ -743,8 +741,7 @@ unixBoot(int argc, char **argv) for (i = 1; i < m5Conf.numCPUs; i++) { ulong stack = (ulong)unix_boot_alloc(1); printf_lock("Bootstraping CPU %d with sp=0x%x\n", i, stack); - m5AlphaAccess->bootStrapImpure = stack; - m5AlphaAccess->bootStrapCPU = i; + m5AlphaAccess->cpuStack[i] = stack; } /* diff --git a/system/alpha/console/dbmentry.S b/system/alpha/console/dbmentry.S index 38e614585..c8a3691e3 100644 --- a/system/alpha/console/dbmentry.S +++ b/system/alpha/console/dbmentry.S @@ -56,6 +56,7 @@ */ #include "fromHudsonOsf.h" + .extern myAlphaAccess .text /* return address and padding to octaword align */ @@ -68,11 +69,24 @@ _entry: br t0, 2f # get the current PC 2: ldgp gp, 0(t0) # init gp - /* - * SimOS. Stack pointer is start of a valid phys or KSEG page - */ +/* Processor 0 start stack frame is begining of physical memory (0) + Other processors spin here waiting to get their stacks from + Processor 0, then they can progress as normal. +*/ + call_pal PAL_WHAMI_ENTRY + beq v0, cpuz + ldq t3, m5AlphaAccess + addq t3,0x70,t3 # *** If offset in console alpha access struct changes + # This must be changed as well! + bis zero,8,t4 + mulq t4,v0,t4 + addq t3,t4,t3 +cpuwait: ldq t4, 0(t3) + beq t4, cpuwait + bis t4,t4,sp + - bis sp,sp,s0 /* save sp */ +cpuz: bis sp,sp,s0 /* save sp */ slave: lda v0,(8*1024)(sp) /* end of page */ @@ -96,6 +110,7 @@ slave: lda v0,(8*1024)(sp) /* end of page */ * Every good C program has a main() */ +/* If stack pointer was 0, then this is CPU0*/ beq s0,master call_pal PAL_WHAMI_ENTRY |