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qemu/target/i386/tcg
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Paolo Bonzini 405c7c0708 target/i386: implement CMPccXADD 
The main difficulty here is that a page fault when writing to the destination
must not overwrite the flags.  Therefore, the flags computation must be
inlined instead of using gen_jcc1*.

For simplicity, I am using an unconditional cmpxchg operation, that becomes
a NOP if the comparison fails.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-12-29 22:04:40 +01:00
..
sysemu accel/tcg: Replace CPUState.env_ptr with cpu_env() 2023-10-04 11:03:54 -07:00
user target/i386: implement SYSCALL/SYSRET in 32-bit emulators 2023-06-26 10:23:56 +02:00
bpt_helper.c compiler.h: replace QEMU_NORETURN with G_NORETURN 2022-04-21 17:03:51 +04:00
cc_helper_template.h.inc target/i386: Rename helper template headers as '.h.inc' 2023-06-13 11:28:58 +02:00
cc_helper.c target/i386: clean up cpu_cc_compute_all 2023-12-29 22:03:02 +01:00
decode-new.c.inc target/i386: implement CMPccXADD 2023-12-29 22:04:40 +01:00
decode-new.h target/i386: implement CMPccXADD 2023-12-29 22:04:40 +01:00
emit.c.inc target/i386: implement CMPccXADD 2023-12-29 22:04:40 +01:00
excp_helper.c target/i386: remove unnecessary arguments from raise_interrupt 2023-12-29 22:02:55 +01:00
fpu_helper.c target/i386: clean up cpu_cc_compute_all 2023-12-29 22:03:02 +01:00
helper-tcg.h target/i386: remove unnecessary arguments from raise_interrupt 2023-12-29 22:02:55 +01:00
int_helper.c target/i386: clean up cpu_cc_compute_all 2023-12-29 22:03:02 +01:00
mem_helper.c target/i386: Inline cmpxchg16b 2023-02-04 06:19:43 -10:00
meson.build i386: split svm_helper into sysemu and stub-only user 2021-05-10 15:41:51 -04:00
misc_helper.c target/i386: clean up cpu_cc_compute_all 2023-12-29 22:03:02 +01:00
mpx_helper.c
ops_sse_header.h.inc target/i386: implement SHA instructions 2023-10-25 17:35:07 +02:00
seg_helper.c target/i386: clean up cpu_cc_compute_all 2023-12-29 22:03:02 +01:00
seg_helper.h i386: split seg_helper into user-only and sysemu parts 2021-05-10 15:41:52 -04:00
shift_helper_template.h.inc target/i386: Rename helper template headers as '.h.inc' 2023-06-13 11:28:58 +02:00
tcg-cpu.c target/i386: Fix 32-bit wrapping of pc/eip computation 2023-12-12 13:35:08 -08:00
tcg-cpu.h target/i386: Move X86XSaveArea into TCG 2021-07-06 08:33:51 +02:00
tcg-stub.c
translate.c target/i386: implement CMPccXADD 2023-12-29 22:04:40 +01:00