gcc-toolset-9-ltrace/SOURCES/ltrace-0.7.91-s390-fetch-syscall.patch
2021-09-09 17:00:41 +00:00

70 lines
2.1 KiB
Diff

@@ -, +, @@
exe->mount("source", "target", "filesystemtype", 0, nil <unfinished ...>
mount@SYS("", "target", "filesystemtype", 0, nil) = -2
<... mount resumed> = -1
---
sysdeps/linux-gnu/s390/fetch.c | 17 ++++++++++++-----
1 files changed, 12 insertions(+), 5 deletions(-)
--- a/sysdeps/linux-gnu/s390/fetch.c
+++ a/sysdeps/linux-gnu/s390/fetch.c
@@ -23,6 +23,7 @@
#include <sys/ucontext.h>
#include <assert.h>
#include <errno.h>
+#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -61,7 +62,8 @@ s390x(struct fetch_context *ctx)
}
static int
-fetch_register_banks(struct process *proc, struct fetch_context *ctx)
+fetch_register_banks(struct process *proc, struct fetch_context *ctx,
+ bool syscall_enter)
{
ptrace_area parea;
parea.len = sizeof(ctx->regs);
@@ -72,15 +74,20 @@ fetch_register_banks(struct process *proc, struct fetch_context *ctx)
strerror(errno));
return -1;
}
+
+ if (syscall_enter)
+ ctx->regs.gprs[2] = ctx->regs.orig_gpr2;
+
return 0;
}
static int
-fetch_context_init(struct process *proc, struct fetch_context *context)
+fetch_context_init(struct process *proc, struct fetch_context *context,
+ bool syscall_enter)
{
context->greg = 2;
context->freg = 0;
- return fetch_register_banks(proc, context);
+ return fetch_register_banks(proc, context, syscall_enter);
}
struct fetch_context *
@@ -89,7 +96,7 @@ arch_fetch_arg_init(enum tof type, struct process *proc,
{
struct fetch_context *context = malloc(sizeof(*context));
if (context == NULL
- || fetch_context_init(proc, context) < 0) {
+ || fetch_context_init(proc, context, type == LT_TOF_SYSCALL) < 0) {
fprintf(stderr, "arch_fetch_arg_init: %s\n",
strerror(errno));
free(context);
@@ -277,7 +284,7 @@ arch_fetch_retval(struct fetch_context *ctx, enum tof type,
return 0;
}
- if (fetch_context_init(proc, ctx) < 0)
+ if (fetch_context_init(proc, ctx, false) < 0)
return -1;
return arch_fetch_arg_next(ctx, type, proc, info, valuep);
}
--