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| author | Aaron Durbin <adurbin@chromium.org> | 2013-05-06 12:22:23 -0500 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-05-14 05:24:18 +0200 |
| commit | 38c326d041218e65d156ce3dd3bfee39e73ceffa (patch) | |
| tree | c48354cbb88efd809a37bb1d397ee76108ab68ec /src/arch/x86/lib/c_start.S | |
| parent | 4409a5eef6d1d669caad1bfe3fbefee87ea7734e (diff) | |
| download | coreboot-38c326d041218e65d156ce3dd3bfee39e73ceffa.tar.xz | |
x86: add thread support
Thread support is added for the x86 architecture. Both
the local apic and the tsc udelay() functions have a
call to thread_yield_microseconds() so as to provide an
opportunity to run pending threads.
Change-Id: Ie39b9eb565eb189676c06645bdf2a8720fe0636a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/3207
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/arch/x86/lib/c_start.S')
| -rw-r--r-- | src/arch/x86/lib/c_start.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/arch/x86/lib/c_start.S b/src/arch/x86/lib/c_start.S index 1e38acaf02..c725f82670 100644 --- a/src/arch/x86/lib/c_start.S +++ b/src/arch/x86/lib/c_start.S @@ -10,6 +10,11 @@ _stack: .space CONFIG_MAX_CPUS*CONFIG_STACK_SIZE _estack: +#if CONFIG_COOP_MULTITASKING +.global thread_stacks +thread_stacks: +.space CONFIG_STACK_SIZE*CONFIG_NUM_THREADS +#endif .section ".textfirst", "ax", @progbits .code32 @@ -45,6 +50,10 @@ _start: /* set new stack */ movl $_estack, %esp +#if CONFIG_COOP_MULTITASKING + /* Push the thread pointer. */ + pushl $0 +#endif /* Push the cpu index and struct cpu */ pushl $0 pushl $0 |